The Core Essentials Bundle | Full DIY Kits for Eurorack Modular Synth

Name: The Core Essentials Bundle | Full DIY Kits for Eurorack Modular Synth
Brand: Guru Gara Synth
Price: 152.99 EUR
Availability: InStock

€152,99 EUR

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Get the complete foundational toolkit for your Eurorack system and save 10% compared to buying them individually!

Utility modules are the true backbone of patch programming. The Core Essentials Bundle combines three of our most powerful, high-density utility workhorses into one definitive package. From precision attenuation and flexible summing to fully automated stereo mixing, this trio provides the ultimate signal-routing foundation for any rack.

The Value Breakdown (Excl. VAT):

Panel 1: VCA IV (Quad VCA) Kit – €58.82
Panel 2: RIM Dual Attenuverter Kit – €42.01
Panel 3: SIN Summing Mixer Kit – €42.01

Total Separately: ~~€142.84~~

Bundle Price: €128.56 (You save €14.28!)

Note: Final VAT/taxes will be calculated automatically at checkout based on your shipping country. International orders outside the EU are processed with 0% VAT.

What’s Inside the Bundle?

Module 1: VCA IV // 10HP Quad VCA & VC Mixer

A high-density, four-channel voltage-controlled amplifier designed for precision signal shaping and high-fidelity mixing.

Versatile Quad Architecture: Four individual OTA-based VCAs, each with its own signal input, CV input, and offset control.
Intelligent Stereo Normalization: Normalled inputs and CV paths let you use channels 1/2 and 3/4 as perfectly synced stereo pairs with a single CV source.
Voltage-Controlled Mixing: All four channels sum beautifully to a dedicated Mix Out. Plugging a cable into an individual channel output instantly removes it from the mix.

Module 2: RIM // 4HP Dual Attenuverter & Offset

A sleek, symmetrical dual-channel utility for scaling, inverting, and shifting your CV or audio signals.

Dual-Channel Path: Two independent channels of high-precision attenuation and inversion.
Visual Feedback: Dedicated +/- polarity LEDs give you instant visual feedback on your voltage behavior.
Standalone Offset Generator: The top channel features an internal voltage reference. When left unpatched, it acts as a standalone manual $-5\text{V}$ to +5V offset generator.

Module 3: SIN // 4HP 5-Channel Summing Mixer

Short for Singularity, this is a zero-clutter, ultra-compact 5-input summing mixer designed to keep your patches neat and manageable.

High-Density Audio/CV Mixing: Combine up to 5 sources into a single, clean output stream.
3-Step Output Gain Switch: Features a unique front-panel switch to instantly drop or attenuate your master output mix (/1, /0.5, and /0.2). Perfect for lowering hot modular signals down to safe line-levels for external mixers, audio interfaces, or guitar pedals.

The Builder-Friendly DIY Experience

All three modules in this bundle are designed to deliver a highly satisfying, stress-free workbench experience for builders of any skill level:

Pre-Assembled SMD: All tiny, tedious surface-mount components are pre-soldered at the factory.
Pure Through-Hole Solder Fun: You only need to solder the satisfying mechanical hardware—jacks, potentiometers, switches, LEDs and power headers.
Zero Calibration Needed: All circuits are engineered for immediate "plug-and-play" use. No multimeters, oscilloscopes, or trimming required after assembly.
Premium Aesthetic (Assembled Examples): Once built, the trio forms a stunning, cohesive look in your rack, featuring our signature matte black PCB front panels with crisp white graphics and gold-plated copper (ENIG) artwork.