{"title":"8HP Modules","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eAt a comfortable 8HP, this module strikes the perfect balance between high-performance control and rack-space efficiency.\u003c\/p\u003e","products":[{"product_id":"3320-vcf-pcb-front-panel-diy-synth-eurorack-low-pass-filter-module","title":"3320 VCF \/ Eurorack \/ PCB and Front Panel","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e \u003cmeta content=\"width=device-width, initial-scale=1.0\" name=\"viewport\"\u003e \u003cmeta content=\"Discover the 3320 VCF (Voltage Controlled Filter), a versatile Eurorack module designed for DIY enthusiasts. Customize your sound with AS3320 or CEM3320 integrated circuits, and enjoy impressive low-pass filter capabilities for rich bass tones and high-resonance sounds.\" name=\"description\"\u003e\u003c\/p\u003e\n\u003ch2 data-end=\"231\" data-start=\"191\"\u003e3320 VCF (Voltage Controlled Filter)\u003c\/h2\u003e\n\u003cp data-end=\"558\" data-start=\"233\"\u003eThe 3320 VCF Eurorack PCB and Front Panel Kit is a classic analog voltage-controlled filter designed for DIY builders seeking authentic vintage character and hands-on sound shaping. Built around the legendary CEM3320 or AS3320 filter IC, this module delivers rich, musical filtering with a distinctly analog response.\u003c\/p\u003e\n\u003cp data-end=\"775\" data-start=\"560\"\u003eWell known from classic synthesizer designs, the 3320 filter topology offers a powerful and expressive low-pass filter, capable of everything from smooth, rubbery bass tones to aggressive, high-resonance sweeps.\u003c\/p\u003e\n\u003ch2 data-end=\"798\" data-start=\"782\"\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-end=\"839\" data-start=\"801\"\u003eEurorack PCB and front panel kit\u003c\/li\u003e\n\u003cli data-end=\"881\" data-start=\"842\"\u003eBased on CEM3320 or AS3320 VCF IC\u003c\/li\u003e\n\u003cli data-end=\"927\" data-start=\"884\"\u003eClassic analog low-pass filter design\u003c\/li\u003e\n\u003cli data-end=\"987\" data-start=\"930\"\u003eVoltage-controlled cutoff\u003c\/li\u003e\n\u003cli data-end=\"1058\" data-start=\"990\"\u003eCapable of deep bass, warm sweeps, and high-resonance textures\u003c\/li\u003e\n\u003cli data-end=\"1085\" data-start=\"1061\"\u003eCompact 8HP format\u003c\/li\u003e\n\u003cli data-end=\"1151\" data-start=\"1088\"\u003eFront panel made from PCB material, hand screen printed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-end=\"1188\" data-start=\"1158\"\u003eFilter Character \u0026amp; Control\u003c\/h2\u003e\n\u003cp data-end=\"1399\" data-start=\"1189\"\u003eAt its core, the 3320 VCF provides a smooth yet powerful low-pass response that excels at both subtle tone shaping and dramatic filtering effects. The filter reacts musically to modulation, making it ideal for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-end=\"1416\" data-start=\"1402\"\u003eBass shaping\u003c\/li\u003e\n\u003cli data-end=\"1438\" data-start=\"1419\"\u003eLead articulation\u003c\/li\u003e\n\u003cli data-end=\"1466\" data-start=\"1441\"\u003ePercussive sound design\u003c\/li\u003e\n\u003cli data-end=\"1492\" data-start=\"1469\"\u003eClassic analog sweeps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1677\" data-start=\"1494\"\u003eWith control voltage input, the cutoff frequency can be dynamically modulated using envelopes, LFOs, or sequencers, allowing expressive and evolving filter movement within your patch.\u003c\/p\u003e\n\u003ch2 data-end=\"1713\" data-start=\"1684\"\u003eDIY Build \u0026amp; Customization\u003c\/h2\u003e\n\u003cp data-end=\"1974\" data-start=\"1714\"\u003eThis module is designed for intermediate-level builders and offers flexibility in component choice by supporting both CEM3320 and AS3320 ICs. This allows builders to experiment with slight tonal variations depending on chip availability and preference.\u003c\/p\u003e\n\u003cp data-end=\"2091\" data-start=\"1976\"\u003eThe PCB layout is optimized for reliability and ease of assembly while maintaining an authentic analog signal path.\u003c\/p\u003e\n\u003ch2 data-start=\"2338\" data-end=\"2366\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"2369\" data-end=\"2387\"\u003eFormat: Eurorack\u003c\/li\u003e\n\u003cli data-start=\"2390\" data-end=\"2402\"\u003eWidth: 8HP\u003c\/li\u003e\n\u003cli data-start=\"2405\" data-end=\"2432\"\u003eSkill Level: Intermediate\u003c\/li\u003e\n\u003cli data-start=\"2435\" data-end=\"2462\"\u003eFilter Type: Low-Pass VCF\u003c\/li\u003e\n\u003cli data-start=\"2465\" data-end=\"2493\"\u003eCore IC: CEM3320 or AS3320\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/drive.google.com\/drive\/folders\/1MR2T1RA1_aFWB-ic7PHAAV29KXzHDp2y?usp=drive_link\" target=\"_blank\"\u003eView Documents\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca title=\"Link to synth parts such as potentiometers and jack sockets.\" href=\"https:\/\/gurugarasynth.com\/collections\/parts\"\u003e\u003cspan\u003eCompatible items such as knobs, potentiometers, jack sockets, and other build components can also be found in the Synth Parts category.\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Guru Gara Synth","offers":[{"title":"Default Title","offer_id":45242239549707,"sku":"","price":17.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7049\/2427\/files\/3320-VCF-PCB--_-Front-Panel-01_309baa65-5b16-40de-80eb-2b9c3ecc9a80.jpg?v=1714394343"},{"product_id":"eurorack-reverb-module-pcb-front-panel-modular-synthesiser","title":"Eurorack Reverb Module \/ PCB + Front Panel \/ Modular Synthesiser","description":"\u003ch2 data-end=\"380\" data-start=\"354\"\u003eEurorack Reverb Module\u003c\/h2\u003e\n\u003cp data-end=\"728\" data-start=\"382\"\u003eThe Eurorack Reverb Module PCB and Front Panel Kit is a DIY effects module designed to add rich, immersive spatial depth to your modular synthesizer. Built around the well-known Belton BTDR-2H reverb brick and paired with a dual VCA stage on the wet signal, it offers both classic reverb tones and advanced voltage-controlled effects.\u003c\/p\u003e\n\u003ch2 data-end=\"751\" data-start=\"735\"\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-end=\"792\" data-start=\"754\"\u003eEurorack PCB and front panel kit\u003c\/li\u003e\n\u003cli data-end=\"841\" data-start=\"795\"\u003eBased on the Belton BTDR-2H reverb brick\u003c\/li\u003e\n\u003cli data-end=\"908\" data-start=\"844\"\u003eDual VCA on the wet signal, based on a 3360 VCA design\u003c\/li\u003e\n\u003cli data-end=\"951\" data-start=\"911\"\u003eCV control over reverb (wet) level\u003c\/li\u003e\n\u003cli data-end=\"1023\" data-start=\"954\"\u003eEnables gated reverb, rhythmic modulation, and delay-like effects\u003c\/li\u003e\n\u003cli data-end=\"1078\" data-start=\"1026\"\u003eSuitable for a wide range of modular audio sources\u003c\/li\u003e\n\u003cli data-end=\"1115\" data-start=\"1081\"\u003eIntermediate-level DIY build\u003c\/li\u003e\n\u003cli data-end=\"1197\" data-start=\"1118\"\u003eFront panel made from high-quality PCB material, screen printed by hand\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-end=\"1243\" data-start=\"1204\"\u003eReverb \u0026amp; Voltage-Controlled Effects\u003c\/h2\u003e\n\u003cp data-end=\"1478\" data-start=\"1244\"\u003eAt the core of the module is the BTDR-2H reverb brick, delivering lush and musical digital reverb. The wet signal is routed through a dual VCA stage, allowing the reverb level to be dynamically controlled with control voltage.\u003c\/p\u003e\n\u003cp data-end=\"1508\" data-start=\"1480\"\u003eBy modulating the wet level:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-end=\"1575\" data-start=\"1511\"\u003eUse an envelope to create classic gated reverb effects\u003c\/li\u003e\n\u003cli data-end=\"1645\" data-start=\"1578\"\u003eApply an LFO for rhythmic modulation or tremolo\/delay-like textures\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1823\" data-start=\"1708\"\u003eThe VCA stage is based on a 3360 VCA design, ensuring smooth, musical amplitude control over the reverb signal.\u003c\/p\u003e\n\u003ch2 data-end=\"1862\" data-start=\"1830\"\u003eCreative Patch Possibilities\u003c\/h2\u003e\n\u003cp data-end=\"1968\" data-start=\"1863\"\u003eThe voltage-controlled wet path opens up expressive sound design techniques that go beyond static reverb:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-end=\"2014\" data-start=\"1971\"\u003eDynamic reverb swells synced to envelopes\u003c\/li\u003e\n\u003cli data-end=\"2046\" data-start=\"2017\"\u003eRhythmic spatial modulation\u003c\/li\u003e\n\u003cli data-end=\"2076\" data-start=\"2049\"\u003ePercussive reverb shaping\u003c\/li\u003e\n\u003cli data-end=\"2106\" data-start=\"2079\"\u003eAnimated ambient textures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2217\" data-start=\"2108\"\u003eThis makes the module equally useful for subtle ambience and more experimental, performance-oriented effects.\u003c\/p\u003e\n\u003ch2 data-end=\"2251\" data-start=\"2224\"\u003eDIY Build \u0026amp; Front Panel\u003c\/h2\u003e\n\u003cp data-end=\"2450\" data-start=\"2252\"\u003eThis PCB and front panel only Eurorack kit is intended for intermediate builders. Assembly follows standard through-hole construction.\u003c\/p\u003e\n\u003cp data-end=\"2635\" data-start=\"2452\"\u003eThe front panel is crafted from durable PCB material and meticulously screen printed by hand, ensuring a professional finish and visual consistency across Guru Gara Synth modules.\u003c\/p\u003e\n\u003ch2 data-end=\"2670\" data-start=\"2642\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-end=\"2691\" data-start=\"2673\"\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Eurorack\u003c\/li\u003e\n\u003cli data-end=\"2706\" data-start=\"2694\"\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 8HP\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2768\" data-start=\"2739\"\u003e\n\u003cstrong\u003eReverb Core:\u003c\/strong\u003e Belton BTDR-2H\u003c\/li\u003e\n\u003cli data-end=\"2820\" data-start=\"2771\"\u003e\n\u003cstrong\u003eVCA Design:\u003c\/strong\u003e 3360-based (dual VCA (for stereo output) on wet signal)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2820\" data-start=\"2771\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cb data-path-to-node=\"11,5,0\" data-index-in-node=\"0\"\u003ePower Requirements:\u003c\/b\u003e Requires +12V, -12V, and +5V from the power bus.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eCompatible components such as knobs, potentiometers, jack sockets, and other build parts can be found in the \u003ca title=\"Parts and components for DIY synth\" href=\"https:\/\/gurugarasynth.com\/collections\/parts\"\u003eSynth Parts\u003c\/a\u003e category.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" title=\"Eurorack Reverb Module \/ Schematic \/ Component List\" href=\"https:\/\/drive.google.com\/drive\/folders\/1hwVwN8-Gg7TKrD3hxi5JMaS1krX98QMa?usp=drive_link\" target=\"_blank\"\u003eDocuments\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"font-weight: 400;\"\u003e\n\u003cstrong\u003eVideo Demo\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp style=\"font-weight: 400;\"\u003e\u003cstrong\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/t_4RJrHqRUw?si=EuzZnaYME54MOkBI\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Guru Gara Synth","offers":[{"title":"Default Title","offer_id":45247354208523,"sku":"","price":17.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7049\/2427\/files\/Reverb-Module-V3.4-PCB_Panel-01_4414a41f-5434-47a5-934c-b6be846df295.jpg?v=1714394497"},{"product_id":"808-bass-drum-clone-eurorack-pcb-and-front-panel","title":"808 Bass Drum Clone \/ Eurorack \/ PCB and Front Panel","description":"\u003ch2 data-start=\"251\" data-end=\"274\"\u003e808 Bass Drum Clone\u003c\/h2\u003e\n\u003cp data-start=\"276\" data-end=\"557\"\u003eThe 808 Bass Drum Clone Eurorack PCB and Front Panel Kit is a DIY drum module based on the original TR-808 bass drum circuitry, adapted for Eurorack modular systems. This design stays true to the classic sound while introducing practical enhancements for modular synthesis.\u003c\/p\u003e\n\u003ch2 data-start=\"564\" data-end=\"580\"\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"583\" data-end=\"621\"\u003eEurorack PCB and front panel kit\u003c\/li\u003e\n\u003cli data-start=\"624\" data-end=\"676\"\u003eBased on the original TR-808 bass drum circuit\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"754\" data-end=\"809\"\u003eAdded pitch adjustment for extended tonal control\u003c\/li\u003e\n\u003cli data-start=\"812\" data-end=\"852\"\u003eOptional resistor for longer decay\u003c\/li\u003e\n\u003cli data-start=\"855\" data-end=\"896\"\u003eControls for tone, decay, and level\u003c\/li\u003e\n\u003cli data-start=\"899\" data-end=\"930\"\u003eCompact 8HP Eurorack format\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"937\" data-end=\"956\"\u003eSound \u0026amp; Control\u003c\/h2\u003e\n\u003cp data-start=\"957\" data-end=\"1275\"\u003eThis 808 bass drum clone delivers the unmistakable deep, punchy character of the original circuit, ranging from tight, percussive hits to long, booming bass drums. The added pitch control expands the sonic range beyond the vintage design, while the optional decay modification allows for extended sustain when desired.\u003c\/p\u003e\n\u003cp data-start=\"1277\" data-end=\"1440\"\u003eDedicated tone, decay, and level controls make it easy to dial in classic 808 sounds or explore more experimental percussive textures within a modular environment.\u003c\/p\u003e\n\u003ch2 data-start=\"1447\" data-end=\"1474\"\u003eDIY Build \u0026amp; Front Panel\u003c\/h2\u003e\n\u003cp data-start=\"1475\" data-end=\"1730\"\u003eThis DIY Eurorack 808 bass drum PCB and front panel kit is intended for intermediate builders. The front panel is made from durable PCB material and screen printed by hand, ensuring a cohesive aesthetic alongside other Guru Gara Synth modules.\u003c\/p\u003e\n\u003ch2 data-start=\"1737\" data-end=\"1765\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"1768\" data-end=\"1786\"\u003e\n\u003cstrong\u003eFormat: \u003c\/strong\u003eEurorack\u003c\/li\u003e\n\u003cli data-start=\"1789\" data-end=\"1801\"\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 8HP\u003c\/li\u003e\n\u003cli data-start=\"1804\" data-end=\"1831\"\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 25mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSkiff Friendly Module\u003c\/h2\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0736\/7049\/2427\/files\/Skiff-Friendly-Module.jpg?v=1768904420\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"808 Bass Drum Clone \/ Schematic \/ Component List\" href=\"https:\/\/drive.google.com\/drive\/folders\/1EKVMibNmEDw-HzZetGgEsP9qF2VcOvR-?usp=drive_link\" target=\"_blank\"\u003eView Documents\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca title=\"Link to synth parts such as potentiometers and jack sockets.\" href=\"https:\/\/gurugarasynth.com\/collections\/parts\"\u003eCompatible items such as knobs, potentiometers, jack sockets, and other build components can also be found in the Synth Parts category.\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVideo Demo\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/r-a3ZyjfHLg?si=bA-_NS2N97uLYddQ\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Guru Gara Synth","offers":[{"title":"Default Title","offer_id":45254999605515,"sku":"","price":17.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7049\/2427\/files\/808-Bass-Drum-pcb_Panel-01_f1c1ea67-e029-47da-86e6-2b53bab52f6d.jpg?v=1714394455"},{"product_id":"3320-high-pass-filer","title":"3320 High Pass Filter \/ Eurorack \/ PCB and Front Panel","description":"\u003ch2 data-end=\"282\" data-start=\"229\"\u003e3320 High Pass Filter (Voltage Controlled Filter)\u003c\/h2\u003e\n\u003cp data-end=\"573\" data-start=\"284\"\u003eThe 3320 High Pass Filter Eurorack PCB and Front Panel Kit is a DIY voltage-controlled high-pass filter designed for Eurorack modular systems. Built around the renowned CEM3320 \/ AS3320 VCF chip, this filter delivers precise control, musical response, and classic analog character.\u003c\/p\u003e\n\u003ch2 data-end=\"596\" data-start=\"580\"\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-end=\"637\" data-start=\"599\"\u003eEurorack PCB and front panel kit\u003c\/li\u003e\n\u003cli data-end=\"681\" data-start=\"640\"\u003eVoltage-controlled high-pass filter\u003c\/li\u003e\n\u003cli data-end=\"744\" data-start=\"684\"\u003eBased on the CEM3320 \/ AS3320 (or equivalent) VCF chip\u003c\/li\u003e\n\u003cli data-end=\"795\" data-start=\"747\"\u003eSmooth filtering with wide resonance range\u003c\/li\u003e\n\u003cli data-end=\"855\" data-start=\"798\"\u003eCapable of subtle tonal shaping to self-oscillation\u003c\/li\u003e\n\u003cli data-end=\"881\" data-start=\"858\"\u003e8HP Eurorack format\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"888\" data-end=\"909\"\u003eSound \u0026amp; Filtering\u003c\/h2\u003e\n\u003cp data-start=\"910\" data-end=\"1276\"\u003eThis 3320-based high-pass filter offers a focused and expressive filtering response, ideal for sculpting low-frequency content, adding movement to midrange material, or creating aggressive resonant effects. The resonance is finely tuned, allowing everything from gentle emphasis to intense, screaming self-oscillation for experimental and musical applications alike.\u003c\/p\u003e\n\u003ch2 data-start=\"1283\" data-end=\"1310\"\u003eDIY Build \u0026amp; Front Panel\u003c\/h2\u003e\n\u003cp data-start=\"1311\" data-end=\"1591\"\u003eThis DIY Eurorack high-pass filter PCB and front panel kit is intended for intermediate builders. The front panel is made from durable PCB material and screen printed by hand, giving the finished module a distinctive and cohesive appearance within any Eurorack system.\u003c\/p\u003e\n\u003ch2 data-start=\"1598\" data-end=\"1626\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"1629\" data-end=\"1647\"\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Eurorack\u003c\/li\u003e\n\u003cli data-start=\"1650\" data-end=\"1662\"\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 8HP\u003c\/li\u003e\n\u003cli data-start=\"1665\" data-end=\"1692\"\u003e\n\u003cstrong\u003eDepth: \u003c\/strong\u003e25mm\u003c\/li\u003e\n\u003cli data-start=\"1695\" data-end=\"1742\"\u003e\n\u003cstrong\u003eFilter Core:\u003c\/strong\u003e CEM3320 \/ AS3320 (or equivalent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSkiff Friendly Module\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0736\/7049\/2427\/files\/Skiff-Friendly-Module.jpg?v=1768904420\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca title=\"Link to synth parts such as potentiometers and jack sockets.\" href=\"https:\/\/gurugarasynth.com\/collections\/parts\"\u003e\u003cspan\u003eCompatible items such as knobs, potentiometers, jack sockets, and other build components can also be found in the Synth Parts category.\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Guru Gara Synth","offers":[{"title":"Default Title","offer_id":45581738770699,"sku":"","price":17.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7049\/2427\/files\/3320-HP-VCF-PCB_Front-Panel01.jpg?v=1720033587"},{"product_id":"ota-low-pass-vcf","title":"OTA Low Pass VCF","description":"\u003ch2 data-end=\"343\" data-start=\"295\"\u003eOTA Low Pass VCF (Voltage Controlled Filter)\u003c\/h2\u003e\n\u003cp data-end=\"655\" data-start=\"345\"\u003eThe OTA Low Pass VCF Eurorack PCB and Front Panel Kit is a DIY analog low-pass filter inspired by the classic MS-20 filter topology. Designed for Eurorack modular systems, this filter delivers warm, juicy tones and rich resonance, making it ideal for adding analog character to any modular synth setup.\u003c\/p\u003e\n\u003ch2 data-end=\"678\" data-start=\"662\"\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-end=\"719\" data-start=\"681\"\u003eEurorack PCB and front panel kit\u003c\/li\u003e\n\u003cli data-end=\"783\" data-start=\"722\"\u003eInspired by classic MS-20 style low-pass filter designs\u003c\/li\u003e\n\u003cli data-end=\"838\" data-start=\"786\"\u003e2-pole (12dB\/octave) voltage-controlled filter\u003c\/li\u003e\n\u003cli data-end=\"909\" data-start=\"841\"\u003eBuilt around the LM13700 OTA for musical, reliable performance\u003c\/li\u003e\n\u003cli data-end=\"941\" data-start=\"912\"\u003eWarm, resonant analog sound\u003c\/li\u003e\n\u003cli data-end=\"967\" data-start=\"944\"\u003e8HP Eurorack format\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-end=\"995\" data-start=\"974\"\u003eSound \u0026amp; Filtering\u003c\/h2\u003e\n\u003cp data-end=\"1282\" data-start=\"996\"\u003eThis OTA-based VCF provides smooth, musical filtering with rich resonance and expressive sweeps. The 12dB\/octave slope offers a versatile response suitable for everything from subtle tone shaping to aggressive analog filtering, making it a flexible low-pass filter for Eurorack systems.\u003c\/p\u003e\n\u003ch2 data-end=\"1316\" data-start=\"1289\"\u003eDIY Build \u0026amp; Calibration\u003c\/h2\u003e\n\u003cp data-end=\"1503\" data-start=\"1317\"\u003eThis DIY Eurorack VCF PCB and front panel kit is intended for intermediate builders. For optimal performance and to achieve the signature warm sound, careful calibration is required.\u003c\/p\u003e\n\u003ch3 data-end=\"1531\" data-start=\"1505\"\u003eImportant build notes:\u003c\/h3\u003e\n\u003cp data-end=\"1583\" data-start=\"1534\"\u003eComponent correction: \u003cstrong data-end=\"1568\" data-start=\"1556\"\u003eC3 = 1µF\u003c\/strong\u003e, \u003cstrong data-end=\"1583\" data-start=\"1570\"\u003eR32 = 22K\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3 data-end=\"1612\" data-start=\"1585\"\u003eInput Level Calibration\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-end=\"1662\" data-start=\"1615\"\u003eSet the Frequency control fully clockwise\u003c\/li\u003e\n\u003cli data-end=\"1720\" data-start=\"1665\"\u003eSet the Resonance control fully counter-clockwise\u003c\/li\u003e\n\u003cli data-end=\"1862\" data-start=\"1723\"\u003eAdjust the In-Level trimmer so the output signal is slightly lower than the input signal, providing sufficient headroom for resonance\u003c\/li\u003e\n\u003cli data-end=\"1931\" data-start=\"1865\"\u003eStart with the trimmer at its lowest setting and slowly increase\u003c\/li\u003e\n\u003cli data-end=\"2018\" data-start=\"1934\"\u003eAvoid overly hot input signals, as this may cause instability or unwanted screeching\u003cstrong data-end=\"2055\" data-start=\"2020\"\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequency Resolution Adjustment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-end=\"2157\" data-start=\"2058\"\u003eUse the Frequency Resolution trimmer to fine-tune the response of the frequency potentiometer\u003c\/li\u003e\n\u003cli data-end=\"2249\" data-start=\"2160\"\u003eAdjust for heavy filtering when the pot is fully down and minimal filtering when fully up\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-end=\"2284\" data-start=\"2256\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-end=\"2305\" data-start=\"2287\"\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Eurorack\u003c\/li\u003e\n\u003cli data-end=\"2320\" data-start=\"2308\"\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 8HP\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2320\" data-start=\"2308\"\u003e\n\u003cstrong\u003eDepth: \u003c\/strong\u003e25mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"2428\" data-end=\"2693\"\u003eSkiff Friendly Module\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0736\/7049\/2427\/files\/Skiff-Friendly-Module.jpg?v=1768904420\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/gurugarasynth.com\/collections\/parts\" title=\"Link to synth parts such as potentiometers and jack sockets.\"\u003e\u003cspan\u003eCompatible items such as knobs, potentiometers, jack sockets, and other build components can also be found in the Synth Parts category.\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVideo Demo\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/KbV1bsUJQRE?si=1iPJ2lSrRvslsV0F\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Guru Gara Synth","offers":[{"title":"Default Title","offer_id":51884530336011,"sku":null,"price":17.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7049\/2427\/files\/OTA-VCF-V1.6-PCB-_-Panel-01.jpg?v=1751979298"},{"product_id":"808-bass-drum-eurorack-module","title":"808 Bass Drum Eurorack Module","description":"\u003cp\u003e\u003cstrong\u003e808 Bass Drum Eurorack Module\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eThis is a hand-built 808 Bass Drum module for your Eurorack modular synthesizer, designed based on the classic circuitry. We've updated the design by swapping the original Japanese transistors for BC series transistors and adding a pitch adjustment and a resistor for longer decay. A jumper on the bottom of the unit allows you to bypass this resistor if you prefer the original decay length. You can also adjust the tone, decay, and level to fine-tune your sound.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"citation-6\"\u003eThe \u003c\/span\u003e\u003cspan class=\"citation-6\"\u003ePCB front panel\u003c\/span\u003e\u003cspan class=\"citation-6\"\u003e is \u003c\/span\u003e\u003cspan class=\"citation-6\"\u003esilk-screened by hand\u003c\/span\u003e\u003cspan class=\"citation-6\"\u003e, and the entire unit is assembled with \u003c\/span\u003e\u003cspan class=\"citation-6\"\u003ehigh-quality components\u003c\/span\u003e\u003cspan class=\"citation-6 citation-end-6\"\u003e.\u003csup class=\"superscript\" data-turn-source-index=\"4\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003cspan class=\"citation-5\"\u003eThe \u003c\/span\u003e\u003cspan class=\"citation-5\"\u003eIC is socketed\u003c\/span\u003e\u003cspan class=\"citation-5 citation-end-5\"\u003e for easy replacement or upgrades\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan class=\"citation-5 citation-end-5\"\u003eVideo\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan class=\"citation-5 citation-end-5\"\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/r-a3ZyjfHLg?si=bA-_NS2N97uLYddQ\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Guru Gara Synth","offers":[{"title":"Default Title","offer_id":52109022789899,"sku":null,"price":89.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7049\/2427\/files\/808-Bass-Drum-built-01.jpg?v=1755877368"},{"product_id":"low-frequency-oscillator-lfo-diy-eurorack-pcb-front-panel-kit","title":"Low Frequency Oscillator (LFO) DIY Eurorack PCB \u0026 Front Panel Kit","description":"\u003cul\u003e\u003c\/ul\u003e\n\u003ch2 data-start=\"253\" data-end=\"296\"\u003eEurorack LFO (Low Frequency Oscillator)\u003c\/h2\u003e\n\u003cp data-start=\"298\" data-end=\"582\"\u003eThe Eurorack LFO PCB and Front Panel Kit is a DIY low frequency oscillator designed for Eurorack modular systems. Built around a classic OTA-based core, this LFO delivers stable, musical modulation and is suitable for a wide range of modulation tasks in modular synth patches.\u003c\/p\u003e\n\u003ch2 data-start=\"589\" data-end=\"605\"\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"608\" data-end=\"646\"\u003eEurorack PCB and front panel kit\u003c\/li\u003e\n\u003cli data-start=\"649\" data-end=\"683\"\u003eClassic OTA-based LFO design\u003c\/li\u003e\n\u003cli data-start=\"686\" data-end=\"742\"\u003eThree waveform outputs: Square, Triangle, and Sine\u003c\/li\u003e\n\u003cli data-start=\"745\" data-end=\"811\"\u003eVoltage-controlled LFO rate with adjustable modulation depth\u003c\/li\u003e\n\u003cli data-start=\"814\" data-end=\"874\"\u003e\n\u003cmeta charset=\"utf-8\"\u003ePing input for LFO reset and creative trigger-based modulation\u003c\/li\u003e\n\u003cli data-start=\"877\" data-end=\"900\"\u003e8HP Eurorack format\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n\u003cmeta charset=\"utf-8\"\u003eModulation \u0026amp; Performance\u003c\/h2\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eThe Eurorack LFO provides flexible modulation ranging from sharp, rhythmic pulses to smooth, evolving movement. Voltage control over the LFO rate allows for dynamic modulation changes, while the Ping input resets the oscillation on the falling edge of a trigger, enabling a wide range of creative, trigger-based modulation techniques and rhythm-related patching.\u003c\/p\u003e\n\u003ch2 data-start=\"1267\" data-end=\"1294\"\u003eDIY Build \u0026amp; Front Panel\u003c\/h2\u003e\n\u003cp data-start=\"1295\" data-end=\"1613\"\u003eThis DIY Eurorack LFO PCB and front panel kit includes a high-quality PCB and a durable front panel made from PCB material, screen printed by hand for a distinctive finish. The kit format allows builders to assemble a unique and expressive modulation source that integrates seamlessly into any Eurorack modular synth system.\u003c\/p\u003e\n\u003ch2 data-start=\"1620\" data-end=\"1648\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"1651\" data-end=\"1669\"\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Eurorack\u003c\/li\u003e\n\u003cli data-start=\"1672\" data-end=\"1684\"\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 8HP\u003c\/li\u003e\n\u003cli data-start=\"1687\" data-end=\"1714\"\u003e\n\u003cstrong\u003eSkill Level:\u003c\/strong\u003e Intermediate\u003c\/li\u003e\n\u003cli data-start=\"1687\" data-end=\"1714\"\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e\u003cspan\u003e 25\u003c\/span\u003emm \u003cmeta charset=\"utf-8\"\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/gurugarasynth.com\/collections\/parts\" title=\"Link to synth parts such as potentiometers and jack sockets.\"\u003e\u003cspan\u003eCompatible items such as knobs, potentiometers, jack sockets, and other build components can also be found in the Synth Parts category.\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eSkiff Friendly Module\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0736\/7049\/2427\/files\/Skiff-Friendly-Module.jpg?v=1768904420\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVideo Demo\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eCreative ways to use LFO\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/MgPKNhOWUhA?si=t63D8_qFRza-wQ_i\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eLFO can be seen in this video controlling Stereo Space on the Riot ST VCF.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/5zW-MT5aE7Q?si=z0D04rYJPLD65MAn\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Guru Gara Synth","offers":[{"title":"Default Title","offer_id":52387569172747,"sku":null,"price":17.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7049\/2427\/files\/OTA-LFO-01.jpg?v=1761228678"},{"product_id":"b-stock-808-bass-drum-pcb-and-front-panel-kit","title":"[B-Stock] 808 Bass Drum PCB and Front Panel Kit","description":"\u003cp data-path-to-node=\"1\"\u003eThe boom is perfect. The panel isn't.\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003eThis is a B-Stock PCB + Front Panel kit for our 808 Bass Drum Clone. The PCB is 100% functional and ready to deliver that iconic low-end punch, but the front panel features minor cosmetic defects—such as surface scratches, scuffs, or slight silkscreen inconsistencies.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-path-to-node=\"3,0,0\"\u003e\n\u003cb data-path-to-node=\"3,0,0\" data-index-in-node=\"0\"\u003eThe Deal:\u003c\/b\u003e 50% OFF the standard kit price.\u003c\/li\u003e\n\u003cli data-path-to-node=\"3,1,0\"\u003e\n\u003cb data-path-to-node=\"3,1,0\" data-index-in-node=\"0\"\u003eThe Condition:\u003c\/b\u003e Fully functional electronics. Minor cosmetic flaws on the panel.\u003c\/li\u003e\n\u003cli data-path-to-node=\"3,2,0\"\u003e\n\u003cb data-path-to-node=\"3,2,0\" data-index-in-node=\"0\"\u003eWhat’s Included:\u003c\/b\u003e High-quality 808 Bass Drum PCB and \"B-Stock\" Front Panel. (Components not included).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"4\"\u003eIf you care more about that unmistakable 808 sub-bass than a flawless finish, this is the best way to add some serious weight to your rack at a fraction of the cost.\u003c\/p\u003e\n\u003ch2 data-path-to-node=\"6\"\u003eAbout the 808 Bass Drum Clone\u003c\/h2\u003e\n\u003cp data-path-to-node=\"7\"\u003eThis kit is a faithful recreation of the original TR-808 circuitry. It retains the classic soul of the original while adding modern flexibility for the modular user.\u003c\/p\u003e\n\u003ch2 data-path-to-node=\"8\"\u003eKey Features:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-path-to-node=\"9,0,0\"\u003e\n\u003cb data-path-to-node=\"9,0,0\" data-index-in-node=\"0\"\u003eClassic Circuitry:\u003c\/b\u003e Based on the legendary TR-808 bass drum design.\u003c\/li\u003e\n\u003cli data-path-to-node=\"9,1,0\"\u003e\n\u003cb data-path-to-node=\"9,1,0\" data-index-in-node=\"0\"\u003eEnhanced Tonal Range:\u003c\/b\u003e Added pitch adjustment control not found on the original.\u003c\/li\u003e\n\u003cli data-path-to-node=\"9,2,0\"\u003e\n\u003cb data-path-to-node=\"9,2,0\" data-index-in-node=\"0\"\u003eDeep Decay:\u003c\/b\u003e Includes an optional resistor mod for those extra-long, booming decays.\u003c\/li\u003e\n\u003cli data-path-to-node=\"9,4,0\"\u003e\n\u003cb data-path-to-node=\"9,4,0\" data-index-in-node=\"0\"\u003eControls:\u003c\/b\u003e Dedicated knobs for Level, Tone, Decay, and Pitch.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"10\"\u003e\u003ca href=\"https:\/\/gurugarasynth.com\/products\/808-bass-drum-clone-eurorack-pcb-and-front-panel\" title=\"808 Bass Drum for Eurorack Modular Synth\"\u003e\u003cb data-path-to-node=\"10\" data-index-in-node=\"0\"\u003e[Link to standard 808 Bass Drum for full specs and demos]\u003c\/b\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cblockquote data-path-to-node=\"11\"\u003e\n\u003cp data-path-to-node=\"11,0\"\u003e\u003cb data-path-to-node=\"11,0\" data-index-in-node=\"0\"\u003eNote:\u003c\/b\u003e B-Stock sales are final. Sold as-is regarding cosmetic condition.\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Guru Gara Synth","offers":[{"title":"Default Title","offer_id":53061162893579,"sku":null,"price":8.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7049\/2427\/files\/B-Stock_-808-Bass-Drum-PCB-and-Front-Panel-01.jpg?v=1776677382"},{"product_id":"b-stock-reverb-module-pcb-and-front-panel-kit","title":"[B-Stock] Reverb Module PCB and Front Panel Kit","description":"\u003cp data-path-to-node=\"1\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cb data-path-to-node=\"4\" data-index-in-node=\"0\"\u003eThe sound is perfect. The panel isn't.\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003eThis is a B-Stock PCB + Front Panel kit for our \u003cb data-index-in-node=\"48\" data-path-to-node=\"2\"\u003eEurorack Reverb Module\u003c\/b\u003e. The electronics are 100% functional, allowing you to build a high-quality, CV-controllable reverb. However, the front panel features minor cosmetic defects—such as surface scratches, scuffs, or slight silkscreen inconsistencies.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-path-to-node=\"3,0,0\"\u003e\n\u003cb data-index-in-node=\"0\" data-path-to-node=\"3,0,0\"\u003eThe Deal:\u003c\/b\u003e 50% OFF the standard kit price.\u003c\/li\u003e\n\u003cli data-path-to-node=\"3,1,0\"\u003e\n\u003cb data-index-in-node=\"0\" data-path-to-node=\"3,1,0\"\u003eThe Condition:\u003c\/b\u003e Fully functional electronics. Minor cosmetic flaws on the panel.\u003c\/li\u003e\n\u003cli data-path-to-node=\"3,2,0\"\u003e\n\u003cb data-index-in-node=\"0\" data-path-to-node=\"3,2,0\"\u003eWhat’s Included:\u003c\/b\u003e High-quality Reverb PCB and \"B-Stock\" Front Panel. (Components, including the Belton Brick, are not included).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"4\"\u003eIf you are more interested in lush, gated reverb textures and 3360-based VCA modulation than a showroom finish, this is the most affordable way to add spatial depth to your rack.\u003c\/p\u003e\n\u003cp data-path-to-node=\"10\"\u003e\u003ca title=\"Guru Gara Synth Reverb Module for eurorack Synthesizer.\" href=\"https:\/\/gurugarasynth.com\/products\/eurorack-reverb-module-pcb-front-panel-modular-synthesiser\"\u003e[Link to standard Reverb Module for full specs and demos]\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"11\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"11,0\"\u003eNote:\u003c\/b\u003e B-Stock sales are final. Sold as-is regarding cosmetic condition. Compatible components and the Belton Brick can be found in our Synth Parts category.\u003c\/p\u003e","brand":"Guru Gara Synth","offers":[{"title":"Default Title","offer_id":53095349354763,"sku":null,"price":8.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7049\/2427\/files\/Reverb-B-Stock-01.jpg?v=1778062060"}],"url":"https:\/\/gurugarasynth.com\/collections\/8hp.oembed","provider":"Guru Gara Synth","version":"1.0","type":"link"}