{"title":"12HP Modules","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e12HP modules are designed for deep immersion, offering an uncompromising layout where every function has its own dedicated space. By prioritizing ergonomics and expanded feature sets, these modules provide a professional, 'instrument-grade' feel that makes complex modulation and sound design feel effortless.\u003c\/p\u003e","products":[{"product_id":"pfl-pre-fader-listen-eurorack-pcb-and-front-panel","title":"PFL \/ Pre-Fader Listen \/ Eurorack \/ PCB and Front Panel","description":"\u003ch2 data-start=\"251\" data-end=\"284\"\u003ePre-Fader Listen (PFL) Module\u003c\/h2\u003e\n\u003cp data-start=\"286\" data-end=\"592\"\u003eThe Pre-Fader Listen Eurorack PCB and Front Panel Kit is a DIY monitoring module designed as a mixer add-on for Eurorack systems. It allows pre-fader listening of up to four audio channels, making it ideal for cueing, signal checking, and detailed audio analysis without affecting the main mix.\u003c\/p\u003e\n\u003ch2 data-start=\"599\" data-end=\"615\"\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"618\" data-end=\"656\"\u003eEurorack PCB and front panel kit\u003c\/li\u003e\n\u003cli data-start=\"659\" data-end=\"726\"\u003ePre-fader listen (PFL) monitoring for up to four channels\u003c\/li\u003e\n\u003cli data-start=\"729\" data-end=\"789\"\u003eDesigned to connect as insert points on mixer channels\u003c\/li\u003e\n\u003cli data-start=\"792\" data-end=\"856\"\u003eIndividual channel level controls for headphone monitoring\u003c\/li\u003e\n\u003cli data-start=\"859\" data-end=\"914\"\u003eBuilt-in headphone output for personal monitoring\u003c\/li\u003e\n\u003cli data-start=\"917\" data-end=\"955\"\u003eMono headphone monitoring design\u003c\/li\u003e\n\u003cli data-start=\"958\" data-end=\"1010\"\u003eHeadphone amplifier based on dual LME49600 ICs\u003c\/li\u003e\n\u003cli data-start=\"1013\" data-end=\"1037\"\u003e12HP Eurorack format\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"1044\" data-end=\"1066\"\u003eMonitoring \u0026amp; Usage\u003c\/h2\u003e\n\u003cp data-start=\"1067\" data-end=\"1401\"\u003eThis PFL module allows you to listen to audio signals before the channel fader, making it easier to preview sounds, check levels, or isolate signals during live performance or studio patching. Each channel includes a dedicated volume control, enabling precise level balancing in the headphones without influencing the main output.\u003c\/p\u003e\n\u003cp data-start=\"1403\" data-end=\"1570\"\u003eThe module is designed for mono monitoring, focusing on clarity and accuracy rather than stereo imaging, which is ideal for critical listening and troubleshooting.\u003c\/p\u003e\n\u003ch2 data-start=\"1577\" data-end=\"1604\"\u003eHeadphone Amplification\u003c\/h2\u003e\n\u003cp data-start=\"1605\" data-end=\"1856\"\u003eThe built-in headphone amplifier is based on two LME49600 ICs, delivering clean and reliable headphone drive. The headphone output uses a stereo jack socket, ensuring compatibility with standard headphones while maintaining a mono signal path.\u003c\/p\u003e\n\u003ch2 data-start=\"1863\" data-end=\"1890\"\u003eDIY Build \u0026amp; Front Panel\u003c\/h2\u003e\n\u003cp data-start=\"1891\" data-end=\"2122\"\u003eThis DIY Eurorack PFL PCB and front panel kit is intended for intermediate builders. The front panel is made from durable PCB material and screen printed by hand, matching the aesthetic of other Guru Gara Synth modules.\u003c\/p\u003e\n\u003ch2 data-start=\"2129\" data-end=\"2157\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"2160\" data-end=\"2178\"\u003eFormat: Eurorack\u003c\/li\u003e\n\u003cli data-start=\"2181\" data-end=\"2194\"\u003eWidth: 12HP\u003c\/li\u003e\n\u003cli data-start=\"2197\" data-end=\"2224\"\u003eSkill Level: Intermediate\u003c\/li\u003e\n\u003cli data-start=\"2227\" data-end=\"2259\"\u003eChannels: 4 (pre-fader insert)\u003c\/li\u003e\n\u003cli data-start=\"2262\" data-end=\"2280\"\u003eMonitoring: Mono\u003c\/li\u003e\n\u003cli data-start=\"2283\" data-end=\"2315\"\u003eHeadphone Amp: LME49600 (dual)\u003c\/li\u003e\n\u003c\/ul\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","brand":"Guru Gara Synth","offers":[{"title":"Default Title","offer_id":45253588812043,"sku":"","price":21.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7049\/2427\/files\/PFL-Module-PCB_Frotn-Panel-01_ebda6400-20be-4e41-a0e5-09cac40189c5.jpg?v=1714394534"},{"product_id":"drum-maker-pcb-and-front-panel","title":"Drum Maker \/ Eurorack \/ PCB and Front Panel","description":"\u003ch2 data-start=\"313\" data-end=\"354\"\u003eDrum Maker (VCO-Based Drum Generator)\u003c\/h2\u003e\n\u003cp data-start=\"356\" data-end=\"682\"\u003eThe Drum Maker Eurorack PCB and Front Panel Kit is a DIY drum synthesis module designed to transform an external VCO into a flexible drum sound generator. By shaping pitch, filtering, and amplitude, Drum Maker allows you to create everything from deep bass drums and punchy kick sounds to tom-like percussive elements.\u003c\/p\u003e\n\u003ch2 data-start=\"689\" data-end=\"705\"\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"708\" data-end=\"746\"\u003eEurorack PCB and front panel kit\u003c\/li\u003e\n\u003cli data-start=\"749\" data-end=\"797\"\u003eConverts an external VCO into a drum voice\u003c\/li\u003e\n\u003cli data-start=\"800\" data-end=\"860\"\u003eOn-board filter and VCA for tone and amplitude shaping\u003c\/li\u003e\n\u003cli data-start=\"863\" data-end=\"923\"\u003eDedicated attack and decay controls for filter and VCA\u003c\/li\u003e\n\u003cli data-start=\"926\" data-end=\"988\"\u003ePitch slide generation for classic drum synthesis techniques\u003c\/li\u003e\n\u003cli data-start=\"991\" data-end=\"1037\"\u003eExternal CV control over Tune and Cutoff\u003c\/li\u003e\n\u003cli data-start=\"1040\" data-end=\"1064\"\u003e12HP Eurorack format\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"1071\" data-end=\"1105\"\u003eDrum Synthesis \u0026amp; Sound Shaping\u003c\/h2\u003e\n\u003cp data-start=\"1106\" data-end=\"1442\"\u003eDrum Maker generates percussive sounds by applying a pitch slide to an external VCO, followed by filtering and amplitude shaping. The integrated low-pass filter includes adjustable cutoff and envelope amount, allowing precise control over tonal character, while the VCA shapes the final amplitude with its own attack and decay controls.\u003c\/p\u003e\n\u003cp data-start=\"1444\" data-end=\"1597\"\u003eWhile sine waves are commonly used for bass drum synthesis, using square or other waveforms opens up harmonically rich and more aggressive drum textures.\u003c\/p\u003e\n\u003ch2 data-start=\"1604\" data-end=\"1630\"\u003eIntegration \u0026amp; Patching\u003c\/h2\u003e\n\u003cp data-start=\"1631\" data-end=\"1674\"\u003eTo use Drum Maker within a Eurorack system:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1677\" data-end=\"1751\"\u003eConnect your VCO’s 1V\/Oct and Sync inputs to the module’s CV outputs\u003c\/li\u003e\n\u003cli data-start=\"1754\" data-end=\"1798\"\u003eRoute the VCO’s audio output to VCO In\u003c\/li\u003e\n\u003cli data-start=\"1801\" data-end=\"1866\"\u003eTrigger the module using a gate signal patched into Gate In\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor more dynamic performance, additional CV sources can be used to externally modulate the Tune and Cutoff parameters.\u003c\/p\u003e\n\u003cp data-start=\"1996\" data-end=\"2230\"\u003eDue to the nature of the design, the module may capture the VCO waveform at slightly different phases, subtly affecting transient behavior. Connecting the VCO’s Sync input can help minimize this effect for more consistent results.\u003c\/p\u003e\n\u003ch2 data-start=\"2237\" data-end=\"2258\"\u003eDIY Build \u0026amp; Notes\u003c\/h2\u003e\n\u003cp data-start=\"2259\" data-end=\"2509\"\u003eThis DIY Eurorack Drum Maker PCB and front panel kit is intended for intermediate to advanced builders. The front panel is made from durable PCB material and screen printed by hand, matching the aesthetic of other Guru Gara Synth modules.\u003c\/p\u003e\n\u003cp data-start=\"2511\" data-end=\"2544\"\u003e\u003cstrong data-start=\"2511\" data-end=\"2544\"\u003eCorrection (PCB version 1.7):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2545\" data-end=\"2634\"\u003e\n\u003cli data-start=\"2545\" data-end=\"2634\"\u003e\n\u003cp data-start=\"2547\" data-end=\"2634\"\u003eR39 should be 100K (PCB silkscreen incorrectly shows 100; documentation is correct)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"2641\" data-end=\"2669\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"2672\" data-end=\"2690\"\u003e\n\u003cstrong\u003eFormat\u003c\/strong\u003e: Eurorack\u003c\/li\u003e\n\u003cli data-start=\"2693\" data-end=\"2706\"\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 12HP\u003c\/li\u003e\n\u003cli data-start=\"2709\" data-end=\"2747\"\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 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\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e \u003ca href=\"https:\/\/gurugarasynth.com\/collections\/parts\" title=\"Link to synth parts such as potentiometers and jack sockets.\"\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\/span\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\/xhPl7iyMmQ4?si=6EqIDwyjBmNnHbTQ\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Guru Gara Synth","offers":[{"title":"Default Title","offer_id":45816327438603,"sku":"","price":22.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7049\/2427\/files\/Drum-Maker-V1.7-PCB-and-Front-Panel-01.jpg?v=1725289511"},{"product_id":"dual-side-chain-vca-eurorack","title":"Dual Side Chain VCA \/ Eurorack","description":"\u003ch2 data-start=\"328\" data-end=\"366\"\u003eSidechain VCA (Gain-Reduction VCA)\u003c\/h2\u003e\n\u003cp data-start=\"368\" data-end=\"733\"\u003eThe Sidechain VCA Eurorack PCB and Front Panel Kit is a dual voltage-controlled amplifier designed around a gain-reduction topology, operating in the opposite way of a traditional VCA. Instead of increasing level with control voltage, incoming CV or audio reduces the gain, making it ideal for sidechain-style dynamics commonly used in electronic music.\u003c\/p\u003e\n\u003ch2 data-start=\"740\" data-end=\"756\"\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"759\" data-end=\"797\"\u003eEurorack PCB and front panel kit\u003c\/li\u003e\n\u003cli data-start=\"800\" data-end=\"836\"\u003eDual gain-reduction VCA design\u003c\/li\u003e\n\u003cli data-start=\"839\" data-end=\"871\"\u003eBased on the 3360 VCA chip\u003c\/li\u003e\n\u003cli data-start=\"874\" data-end=\"933\"\u003eControl voltage reduces gain rather than increases it\u003c\/li\u003e\n\u003cli data-start=\"936\" data-end=\"988\"\u003eAudio input for sidechain-style gain reduction\u003c\/li\u003e\n\u003cli data-start=\"991\" data-end=\"1036\"\u003eCV input for envelope-shaped gain reduction\u003c\/li\u003e\n\u003cli data-start=\"1039\" data-end=\"1072\"\u003eAdjustable attack and decay\u003c\/li\u003e\n\u003cli data-start=\"1075\" data-end=\"1128\"\u003eAudio level control to set gain-reduction depth\u003c\/li\u003e\n\u003cli data-start=\"1131\" data-end=\"1155\"\u003e12HP Eurorack format\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"1162\" data-end=\"1202\"\u003eGain Reduction \u0026amp; Sidechain Behaviour\u003c\/h2\u003e\n\u003cp data-start=\"1203\" data-end=\"1532\"\u003eThis VCA is designed to emulate classic sidechain-style ducking techniques, where the level of one signal is reduced in response to another. An external audio signal—such as a kick drum—can be used to generate an internal control voltage, automatically reducing the gain of the main signal when the sidechain input is active.\u003c\/p\u003e\n\u003cp data-start=\"1534\" data-end=\"1761\"\u003eAlternatively, a control voltage or envelope can be patched into the CV input to shape gain reduction over time, allowing rhythmic pumping effects, subtle dynamic control, or creative modulation beyond traditional VCA behavior.\u003c\/p\u003e\n\u003ch2 data-start=\"1768\" data-end=\"1791\"\u003eControls \u0026amp; Response\u003c\/h2\u003e\n\u003cp data-start=\"1792\" data-end=\"2090\"\u003eAttack and decay controls shape how quickly the gain reduction responds and recovers, while the audio level control adjusts the depth of gain reduction when using the sidechain audio input. This allows precise tuning of the dynamic response for both subtle movement and pronounced rhythmic effects.\u003c\/p\u003e\n\u003ch2 data-start=\"2097\" data-end=\"2124\"\u003eDIY Build \u0026amp; Front Panel\u003c\/h2\u003e\n\u003cp data-start=\"2125\" data-end=\"2388\"\u003eThis DIY Eurorack VCA 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 your modular system.\u003c\/p\u003e\n\u003ch2 data-start=\"2395\" data-end=\"2423\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"2426\" data-end=\"2444\"\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Eurorack\u003c\/li\u003e\n\u003cli data-start=\"2447\" data-end=\"2460\"\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 12HP\u003c\/li\u003e\n\u003cli data-start=\"2463\" data-end=\"2490\"\u003e\n\u003cstrong\u003eDepth: \u003c\/strong\u003e25\u003cstrong\u003e \u003c\/strong\u003emm\u003c\/li\u003e\n\u003cli data-start=\"2493\" data-end=\"2518\"\u003e\n\u003cstrong\u003eVCA Core: \u003c\/strong\u003e3360 VCA (dual)\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\u003cspan lang=\"EN-US\"\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\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan lang=\"EN-US\"\u003eVideos\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan lang=\"EN-US\"\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/p1bc6dtU2lI?si=vQFc7NRoW6stHK8b\" 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":51175019905291,"sku":"","price":21.49,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7049\/2427\/files\/Side-Chain-VCA-PCB-and-Panel-01.jpg?v=1743491198"},{"product_id":"riot-st-vcf","title":"Riot ST VCF - Stereo Low Pass Filter for Eurorack","description":"\u003ch2 data-end=\"328\" data-start=\"255\"\u003eRiot ST VCF – Stereo Low-Pass Filter (Fully Assembled Eurorack Module)\u003c\/h2\u003e\n\u003cp data-end=\"648\" data-start=\"330\"\u003eThe Riot ST VCF is a fully assembled analog stereo low-pass filter for Eurorack, designed to deliver a powerful, characterful sound with expressive stereo movement. Combining a thick low-end with refined resonance behavior, it offers both bold tone shaping and controlled modulation for modern modular systems.\u003c\/p\u003e\n\u003cp data-end=\"832\" data-start=\"650\"\u003eThe module is housed behind a distinctive 12HP PCB front panel featuring black, white, and gold-plated PCB artwork, making it a striking visual centerpiece in any Eurorack setup.\u003c\/p\u003e\n\u003ch2 data-end=\"854\" data-start=\"839\"\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-end=\"921\" data-start=\"857\"\u003eStereo analog low-pass filter for Eurorack\u003c\/li\u003e\n\u003cli data-end=\"960\" data-start=\"924\"\u003eTrue stereo inputs and outputs\u003c\/li\u003e\n\u003cli data-end=\"1016\" data-start=\"963\"\u003eMono-to-stereo operation via internal switched jack\u003c\/li\u003e\n\u003cli data-end=\"1079\" data-start=\"1019\"\u003eStereo Space fader for animated stereo cutoff movement\u003c\/li\u003e\n\u003cli data-end=\"1150\" data-start=\"1082\"\u003eCV control over Frequency, Resonance, and Stereo Space\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1272\" data-start=\"1216\"\u003eUnique PCB art front panel with gold-plated traces\u003c\/li\u003e\n\u003cli data-end=\"1272\" data-start=\"1216\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eSmooth, controlled resonance suitable for musical modulation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-end=\"1321\" data-start=\"1279\"\u003eStereo Signal Path \u0026amp; Mono Compatibility\u003c\/h2\u003e\n\u003cp data-end=\"1610\" data-start=\"1322\"\u003eThe Riot ST VCF features dedicated left and right audio inputs and outputs. When a mono signal is patched into the left input only, an internal switched jack automatically routes the signal to both channels, allowing mono sources to be processed in stereo without additional patching.\u003c\/p\u003e\n\u003ch2 data-end=\"1640\" data-start=\"1617\"\u003eStereo Space Control\u003c\/h2\u003e\n\u003cp data-end=\"1762\" data-start=\"1641\"\u003eThe Stereo Space fader defines the relationship between the cutoff frequencies of the left and right filter channels:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-end=\"1865\" data-start=\"1766\"\u003e\n\u003cstrong data-end=\"1787\" data-start=\"1766\"\u003eCentered position\u003c\/strong\u003e: Both channels share the same cutoff frequency, behaving like a mono filter\u003c\/li\u003e\n\u003cli data-end=\"1976\" data-start=\"1868\"\u003e\n\u003cstrong data-end=\"1897\" data-start=\"1868\"\u003eFader moved left or right\u003c\/strong\u003e: One channel’s cutoff increases while the other decreases by the same amount\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2057\" data-start=\"1978\"\u003eThis design creates width, motion, and depth without sacrificing tonal balance.\u003c\/p\u003e\n\u003ch2 data-end=\"2098\" data-start=\"2064\"\u003eCV-Controlled Stereo Modulation\u003c\/h2\u003e\n\u003cp data-end=\"2260\" data-start=\"2099\"\u003eThe Riot ST VCF provides CV inputs for Frequency, Resonance, and Stereo Space, allowing envelopes, LFOs, and sequencers to introduce dynamic stereo movement.\u003c\/p\u003e\n\u003cp data-end=\"2378\" data-start=\"2262\"\u003eWhen a control voltage is patched into the Stereo Space CV input, the fader acts as a bipolar depth control:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-end=\"2425\" data-start=\"2381\"\u003e\n\u003cstrong\u003eCenter position:\u003c\/strong\u003e Incoming CV has no effect\u003c\/li\u003e\n\u003cli data-end=\"2492\" data-start=\"2428\"\u003e\n\u003cstrong\u003eMove right\u003c\/strong\u003e: CV raises the right cutoff while lowering the left\u003c\/li\u003e\n\u003cli data-end=\"2558\" data-start=\"2495\"\u003e\n\u003cstrong\u003eMove left:\u003c\/strong\u003e CV raises the left cutoff while lowering the right\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2644\" data-start=\"2560\"\u003eThis enables responsive, evolving stereo modulation that remains musical and stable.\u003c\/p\u003e\n\u003ch2 data-end=\"2669\" data-start=\"2651\"\u003eSound Character\u003c\/h2\u003e\n\u003cp data-end=\"2930\" data-start=\"2670\"\u003eThe filter core delivers a thick, weighty low-end with a resonance that emphasizes musical movement rather than harsh self-oscillation. This makes the Riot ST VCF well suited for basses, pads, drones, and animated stereo textures—especially when modulated.\u003c\/p\u003e\n\u003ch2 data-end=\"2954\" data-start=\"2937\"\u003eDesign \u0026amp; Build\u003c\/h2\u003e\n\u003cp data-end=\"3188\" data-start=\"2955\"\u003eThe Riot ST VCF is fully assembled and ready to use. The PCB front panel is made from durable PCB material and finished with bold black, white, and gold-plated artwork, ensuring both reliability and a distinctive visual identity.\u003c\/p\u003e\n\u003ch2 data-end=\"199\" data-start=\"171\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-end=\"220\" data-start=\"202\"\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Eurorack\u003c\/li\u003e\n\u003cli data-end=\"236\" data-start=\"223\"\u003e\n\u003cstrong\u003eWidth: \u003c\/strong\u003e12HP\u003c\/li\u003e\n\u003cli data-end=\"269\" data-start=\"239\"\u003e\n\u003cstrong\u003eFilter Type:\u003c\/strong\u003e Stereo low-pass\u003c\/li\u003e\n\u003cli data-end=\"322\" data-start=\"272\"\u003e\n\u003cstrong\u003eAudio Inputs:\u003c\/strong\u003e Stereo (mono-to-stereo compatible)\u003c\/li\u003e\n\u003cli data-end=\"372\" data-start=\"325\"\u003e\n\u003cstrong\u003eCV Inputs:\u003c\/strong\u003e Frequency, Resonance, Stereo Space\u003c\/li\u003e\n\u003cli data-end=\"394\" data-start=\"375\"\u003e\n\u003cstrong data-end=\"392\" data-start=\"375\"\u003eCurrent Draw:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli data-end=\"412\" data-start=\"399\"\u003e+12V: 70 mA\u003c\/li\u003e\n\u003cli data-end=\"430\" data-start=\"417\"\u003e−12V: 80 mA\u003c\/li\u003e\n\u003cli data-end=\"446\" data-start=\"435\"\u003e+5V: 0 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"446\" data-start=\"435\"\u003e\n\u003cstrong\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eFilter Core:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e OTA (Operational Transconductance Amplifier)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-is-last-node=\"\" data-end=\"1235\" data-start=\"1095\"\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e\u003cspan\u003e 25\u003c\/span\u003emm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-end=\"2693\" data-start=\"2428\"\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\u003cb\u003eVideo Demo\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eAll stereo movement in the videos is achieved by modulating the filter’s stereo space via CV, or by manually moving the fader to create and control the cutoff frequency offset between the left and right channels.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/Ji53cjiZhgQ?si=q7mIQjo3Qm9tRxXw\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/5zW-MT5aE7Q?si=cWR2wxgn6vZRHpgm\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/YkFrFrAth-w?si=xDBr4EgV0l6xWQPv\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/WCKM7zCqGf8?si=B0ntYn--m_qeSuoQ\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e","brand":"Guru Gara Synth","offers":[{"title":"Default Title","offer_id":52002860204299,"sku":null,"price":149.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7049\/2427\/files\/riot-st-vcf-01.jpg?v=1756387533"},{"product_id":"vco-vcf-complete-kit-bundle","title":"Analog Voice Starter Pack – 3340 VCO + Riot ST VCF Complete DIY Kits","description":"\u003cp data-end=\"699\" data-start=\"524\"\u003eBuild a powerful analog voice with depth, width, and character using this curated Eurorack bundle featuring the 3340 VCO Complete Kit and the Riot ST VCF Complete Kit.\u003c\/p\u003e\n\u003cp data-end=\"898\" data-start=\"701\"\u003eThis combination gives you the essential foundation of subtractive synthesis — a stable, classic 3340-based voltage-controlled oscillator paired with a warm, rich stereo analog low-pass filter.\u003c\/p\u003e\n\u003cp data-end=\"1276\" data-start=\"900\"\u003eWhile the 3340 VCO provides a solid and musical sound source, the Riot ST VCF expands it into the stereo field, offering expressive control over Frequency, Resonance, and Stereo Space. With its dedicated Stereo Space fader and CV input, you can create wide, animated filter movement from a single mono oscillator — turning simple waveforms into spacious, dynamic textures.\u003c\/p\u003e\n\u003ch2 data-end=\"1297\" data-start=\"1278\"\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-end=\"1327\" data-start=\"1300\"\u003e3340 VCO Complete DIY Kit\u003c\/li\u003e\n\u003cli data-end=\"1360\" data-start=\"1330\"\u003eRiot ST VCF Complete DIY Kit\u003c\/li\u003e\n\u003cli data-end=\"1416\" data-start=\"1363\"\u003eAll required electronic components for both modules\u003c\/li\u003e\n\u003cli data-end=\"1482\" data-start=\"1419\"\u003eFactory pre-soldered SMD sections (no SMD soldering required)\u003c\/li\u003e\n\u003cli data-end=\"1515\" data-start=\"1485\"\u003eDetailed build documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-end=\"1544\" data-start=\"1517\"\u003eWhy Choose This Bundle?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-end=\"1611\" data-start=\"1548\"\u003eComplete analog voice foundation (Oscillator + Stereo Filter)\u003c\/li\u003e\n\u003cli data-end=\"1670\" data-start=\"1614\"\u003eExpressive stereo movement and modulation capabilities\u003c\/li\u003e\n\u003cli data-end=\"1725\" data-start=\"1673\"\u003eEasy-build format with pre-soldered SMD components\u003c\/li\u003e\n\u003cli data-end=\"1780\" data-start=\"1728\"\u003eIdeal starting point for a powerful Eurorack voice\u003c\/li\u003e\n\u003cli data-end=\"1841\" data-start=\"1783\"\u003eBetter value compared to purchasing both kits separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2114\" data-start=\"1843\"\u003eBoth kits are designed to streamline the build process. All essential SMD components are professionally assembled at the factory, leaving only through-hole (THT) components for installation — delivering a satisfying DIY experience without the complexity of SMD soldering.\u003c\/p\u003e\n\u003cp data-end=\"2372\" data-start=\"2116\"\u003eThe Riot ST VCF can process mono signals in stereo thanks to its internally linked inputs, allowing you to generate wide spatial movement from a single oscillator. Add a VCA, envelope generator, and power solution to complete a fully playable analog voice.\u003c\/p\u003e\n\u003ch2 data-end=\"2372\" data-start=\"2116\"\u003eBuild Documents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" title=\"3340 VCO Complete DIY Kitstep by step build guide\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0736\/7049\/2427\/files\/3340_Complete_Kit_Build_Guide.pdf?v=1770199145\" target=\"_blank\"\u003e3340 VCO Build Document\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" title=\"Riot ST VCF complete DIY kit - Step by step build guide\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0736\/7049\/2427\/files\/Riot_ST_VCF_Full_Kit_Build_Guide.pdf?v=1769618754\" target=\"_blank\"\u003eRiot ST VCF Build Document\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eVideo\u003c\/h2\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/dOQWqyMa8Ic?si=lewGmcMWgeptiNNS\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/5zW-MT5aE7Q?si=X1-9B9fGgLrbtmp6\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e","brand":"Guru Gara Synth","offers":[{"title":"Default Title","offer_id":52882041733387,"sku":null,"price":169.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7049\/2427\/files\/3340-VCO-_-Riot-ST-VCF-Bundle.jpg?v=1770364688"}],"url":"https:\/\/gurugarasynth.com\/collections\/12hp-modules.oembed","provider":"Guru Gara Synth","version":"1.0","type":"link"}