ADDAC System

Explore 133 ADDAC System vintage synthesizer models — specs, production history, reviews, and market values in the VTA archive.

Modular

• .WAV Player Expansion — The ADDAC111B Ultra .WAV Player Expansion adds instant trigger access to 8 samples (A–H) for the ADDAC111. Priority-based playback, 16 hp, back-mounted.
• 100 Series — The ADDAC100 Series is a family of Eurorack modules from Lisbon, blending noise, radio, and digital playback into unpredictable, hands-on sound design tools.
• 101 — The ADDAC System 101 .WAV Player brings lo-fi, hands-on sample playback to Eurorack with gritty character and tactile control.
• 101 .WAV Player — The ADDAC101 .WAV Player brings 22kHz sampling to Eurorack, with CV control, envelope following, and live SD swapping — a cult favorite despite strict file rules.
• 102 — The ADDAC System 102 VC FM Radio brings live radio and electromagnetic noise into Eurorack — fully voltage-controlled, skiff-friendly.
• 103 — The ADDAC System 103 T-Networks packs four analog twin-T drum voices into 8HP, delivering raw, vintage-style percussion with zero digital processing.
• 103 T-Networks — The ADDAC 103 T-Networks brings vintage twin-T drum circuits into Eurorack with four raw, tunable analog voices and destructive audio filtering.
• 104 — The ADDAC System 104 VC T-Networks brings vintage analog drum machine resonance to Eurorack with four CV-controllable T-network voices in just 8HP.
• 104 T-Networks — The ADDAC104 VC T-Networks is a 4-voice Eurorack module inspired by vintage drum machine circuits. Raw, punchy, and voltage-controlled—perfect for kicks.
• 104 VC T-Networks — The ADDAC 104 VC T-Networks packs four analog drum voices into 8 HP, reviving vintage T-circuit percussion with voltage control and fearless patchability.
• 105 — The ADDAC 105 is a chaotic 4-voice square wave cluster module with FM, slew, and a gritty multimode filter—perfect for atonal textures and generative noise.
• 105 4 Voice Cluster — The ADDAC 105 4 Voice Cluster (2020) packs four chaotic square oscillators and a multimode filter into 8 HP. Specs, sound, and custom panel options.
• 106 — The ADDAC System 106 is a 4-voice analog noise percussion module with T-network filtering and a gritty summed output—raw, hands-on, and full of character.
• 106 T-Noiseworks — ADDAC106 T-Noiseworks (2020) – 4-voice Eurorack percussion module with t-network filters, 8 HP, noise-based drums, manual control only
• 107 — The ADDAC 107 is a 9 HP Eurorack acid voice that turned a percussion concept into a squelchy, self-contained analog monster with built-in distortion and a smiley face.
• 107 ACID Source — The ADDAC107 ACID Source packs a full analog synth voice into 9 HP—fat bass, screaming filter, and raw distortion. Specs, quirks, and DIY details.
• 111 — The ADDAC System 111 is a no-frills Eurorack .WAV player that delivers reliable, CV-controllable sample playback with zero latency.
• 111 Ultra .WAV Player — The ADDAC 111 Ultra .WAV Player is a Eurorack module upgrade over the 101, with better loop control, Micro SD storage, and expansion options.
• 111B — The ADDAC System 111B is a trigger-based expansion for the 111 sampler, enabling instant recall of 8 samples with priority-based switching.
• 112 — The ADDAC System 112 is a dual-module Eurorack granular looper with 5-minute buffer, visual feedback, and split control/I-O design.
• 112 Looper Granulator — The ADDAC 112 Looper Granulator is a 45HP Eurorack module combining a 5-minute looper with a 32-grain granular processor.
• 112S — The ADDAC System 112S is a standalone granular looper with a 5-minute buffer, real-time visual feedback, and deep CV control—all in a portable desktop unit.
• 200B — The ADDAC System 200B is a compact, reliable buffered multiple for Eurorack—no frills, no failures, just clean signal splitting in 4HP.
• 200B Buffered Multiples — The ADDAC 200B Buffered Multiples is a compact 2HP Eurorack module that cleanly splits audio and CV signals across two independent buffered channels.
• 200CT — The ADDAC 200CT is a dedicated Eurorack cable tester that verifies continuity and prevents costly wiring mistakes. Find detailed specs here.
• 200PI — The ADDAC200PI Pedal Integrator bridges Eurorack and pedalboard worlds with clean level matching and dual jack support. Includes detailed specs.
• 200PI Pedal Integrator — The ADDAC 200PI Pedal Integrator — vintage synth equipment. Specifications, history, and review. This page has the complete spec table and when it was made.
• 200RM — The ADDAC 200RM is a 2HP Eurorack voltage monitor that gives real-time analog readouts of ±12V rails—quiet, essential, and built to prevent disasters.
• 200RM Rails Monitor — The ADDAC 200RM is a precision analog voltage meter for Eurorack systems, monitoring +12V and -12V rails with 0.1% accuracy to prevent power-related failures.
• 200S — The ADDAC 200S is a passive 4HP Eurorack module that converts three 1/4-inch jacks to 1/8-inch, solving a common patching headache with zero power draw.
• 201 — The ADDAC 201 is a compact Eurorack module that inverts CV signals with precision, featuring offset controls and polarity LEDs for reliable voltage manipulation.
• 203 — The ADDAC System 203 is a dual-channel CV offset and attenuverter module that brings precise voltage control to Eurorack systems with minimalist.
• 204 — The ADDAC System 204 is a compact Eurorack module that scales, offsets, and morphs CV signals with real-time voltage control—ideal for dynamic.
• 205 — The ADDAC 205 blends dual OLED oscilloscopes with 8-bit waveform generation, turning voltage into vision and data into sound.
• 205B — A mysterious, undocumented Eurorack expansion module with a tiny OLED screen, made by ADDAC System as a digital add-on to the 205 Dual Oscilloscope.
• 206 — The ADDAC System 206 is a Eurorack switching sequencer that routes audio and CV with precision, turning static patches into evolving performances.
• 207 — The ADDAC System 207 Intuitive Quantizer brings four-channel pitch correction and real-time chord generation to Eurorack.
• 207 Intuitive Quantizer — The ADDAC 207 Intuitive Quantizer is a 4-voice Eurorack module that generates chords, supports microtonal scales, and doubles as a playable keyboard—but demands firmware-savvy ownership.
• 208 — The ADDAC System 208 packs a comparator and quad rectifiers into 4 HP of no-nonsense Eurorack utility — essential for signal shaping and frequency doubling.
• 213A — The ADDAC 213A is a passive Eurorack bridge module that sends 8 CV/audio signals between cases via ribbon cable—simple, reliable.
• 213A Eurorack Bridge — The ADDAC 213A Eurorack Bridge — vintage synth equipment. Specifications, history, and review. Covers when it was made. Covers when it was made.
• 213B — The ADDAC 213B is a passive Eurorack utility that routes 8 CV/audio signals between modules or cases—no power, no noise, just clean, silent connectivity.
• 215 — The ADDAC System 215 packs dual sample & hold, slew, noise, and analog math into 6HP—making randomness musical without wasting space.
• 216 — The ADDAC 216 is a dual-channel Eurorack utility that performs sum/difference math, rectification, and offset—turning signal manipulation into an expressive tool.
• 216 Dual Attenuverter and CV Processor — The ADDAC 216 Dual Attenuverter and CV Processor is a dual-channel Eurorack module for summing, subtracting, rectifying, and offsetting CV and audio signals.
• 216 Sum & Difference — The ADDAC 216 Sum & Difference is a dual-channel Eurorack logic module that mixes, subtracts, rectifies, and offsets audio and CV signals with surgical precision.
• 218 — The ADDAC 218 is a compact 4 HP Eurorack utility module with three bipolar attenuverters and smart normalization—essential for clean, flexible CV control.
• 221 — The ADDAC 221 converts 10 CV inputs to MIDI CC messages with preset storage, making it a vital bridge between modular and digital gear.
• 222 — The ADDAC 222 converts 4 CV inputs into polyphonic MIDI streams, making it a powerful, firmware-upgradable bridge between modular and digital synths.
• 300 — The ADDAC 300 is a dual power starvation module that degrades other Eurorack modules' sound by reducing their voltage—creating lo-fi, glitchy.
• 300 Series — The ADDAC 300 Series brings muscle tension, foot pedals, and power starvation into Eurorack—unconventional control for experimental modular synthesis.
• 300 V2 — The ADDAC 300 V2 lets you starve Eurorack modules of power for gritty, unstable, and deeply organic sonic degradation—real circuit chaos, not simulation.
• 300A — The ADDAC 300A is a dual-channel Eurorack power starvation module that lets you creatively underpower analog modules for glitchy, unstable.
• 301 — The ADDAC 301 Floor Control brings expression and sustain pedals into Eurorack with precision CV scaling, offset control, and real-time LED feedback in 4 HP.
• 301 Floor Control — The ADDAC 301 Floor Control brings pedal expression to Eurorack with precise CV mapping and a hidden +5V power feature—quietly essential.
• 301B — The ADDAC 301B is a passive dual expression attenuator for Eurorack, letting you control CV or audio with foot pedals—simple, reliable.
• 301B Dual Expression Attenuator — The ADDAC301B Dual Expression Attenuator (2014) is a passive 4 HP Eurorack module for foot-controlled CV/audio attenuation.
• 301C — The ADDAC 301C is a passive dual sustain pedal switcher for Eurorack—simple, silent, and essential for live modular performance.
• 302 — The ADDAC 302 turns a Nintendo Nunchuk into a multidimensional Eurorack controller—messy, expressive, and full of surprises.
• 302 CV Mixup — The ADDAC 302 CV Mixup turns joystick and accelerometer motion into expressive control voltage—ideal for live performance and tactile patching.
• 303 — The ADDAC 303 translates muscle tension into control voltage, turning your body into a live patch cable for Eurorack systems.
• 303 Muscle Sensing — The ADDAC 303 Muscle Sensing module turns your body's electrical signals into modular control voltage—raw, physical, and deeply expressive.
• 304 — The ADDAC 304 Manual Gates module offers 8 tactile triggers with 4 doubling as momentary signal pass-throughs—simple, reliable.
• 305 — The ADDAC 305 Manual Latches is an 8-channel Eurorack module offering latching switches for gates and signal routing—simple, tactile, and essential.
• 306 — The ADDAC 306 VC Transitions is a 5-channel CV morphing module that lets you smoothly transition between patch states with a single slider.
• 306 Touch Controller — The ADDAC 306 Touch Controller is a 5-channel CV morphing module that lets you transition between two voltage states with a single slider—ideal for live performance and patch automation.
• 306 VC Transitions — The ADDAC 306 VC Transitions is a 5-channel CV morphing module for Eurorack, letting you smoothly transition between sonic states with one slider.
• 307 — The ADDAC 307 turns your heartbeat into a control voltage, offering a rare bio-responsive tool for Eurorack modular synthesis.
• 307 Heart Sensing — The ADDAC 307 Heart Sensing turns your pulse into CV and gate signals, blending biology with modular synthesis in a uniquely expressive way.
• 308 — The ADDAC 308 converts ambient light into expressive CV, offering dual outputs, adjustable response, and real-time environmental modulation for Eurorack.
• 308 Light to CV — The ADDAC 308 Light to CV turns ambient light into expressive control voltage, blending analog warmth with experimental interactivity in a compact 4HP Eurorack module.
• 310 — The ADDAC 310 Pressure to CV turns breath into expressive control voltage, offering dual-channel modulation with analog immediacy in a 10 HP Eurorack module.
• 310 Pressure to CV — The ADDAC 310 Pressure to CV turns breath into modular control voltage, using sealed-tube pressure sensing for sustained, expressive modulation.
• 311 — The ADDAC 311 Ultra Floor Control brings five expression pedals and five footswitches into Eurorack via a compact 8HP module—feet finally get their due in modular performance.
• 401 — The ADDAC 401 turns audio amplitude into 8 independent gates, transforming volume into rhythm—one of Eurorack's most inventive envelope followers.
• 402 — The ADDAC System 402 is a 20HP Eurorack rhythm generator using Euclidean math, Game of Life, and voltage-controlled Pong to create intelligent, evolving beats.
• 402B — The ADDAC 402B is a purpose-built MIDI expander that adds full bidirectional MIDI control to the ADDAC 402, turning it into a studio-integrated rhythm powerhouse.
• 403 — ADDAC System 403 VC Time Signature Clock Sources – 16HP Eurorack clock module with drift-compensated digital timing, 8 trigger outputs.
• 500 Series — The ADDAC 500 Series brings generative depth to Eurorack with the 501, 503, and 504—each turning randomness into a compositional ally.
• 501 — The ADDAC System 501 is a compact 8HP Eurorack module offering four channels of analog random CV with voltage range, timing, and quantization control.
• 501 Complex Random — The ADDAC 501 Complex Random is a 4-channel Eurorack CV generator with Brownian motion, quantization, and deep voltage/timing control—musical randomness refined.
• 501B — The ADDAC 501B is a 4 HP Eurorack expansion that adds gate outputs to the 501 random generator—compact chaos with zero learning curve.
• 501B Complex Random Expansion — The ADDAC 501B Complex Random Expansion adds gate outputs to the ADDAC 501 with dual signals, smooth control, and two trigger modes.
• 501B Expansion — The ADDAC 501B Expansion adds gate outputs to the 501 Complex Random, turning chaotic CV into rhythmic triggers with a smoothable slew for organic timing.
• 503 — The ADDAC System 503 simulates a rolling marble's physics to generate organic CV and gates—making it one of Eurorack's most unique generative modules.
• 503 Marble Physics — The ADDAC 503 Marble Physics brings Newtonian motion to Eurorack, turning a simulated rolling marble into expressive, organic CV for modulation, panning.
• 504 — The ADDAC System 504 is a probabilistic Eurorack module that turns chance into composition, blending gated randomness with tunable CV for generative mayhem.
• 504 Probabilistic Generator — The ADDAC 504 Probabilistic Generator is a Eurorack module that turns weighted chance into musical narrative, with tunable pitches, cascading gates.
• 506 — The ADDAC System 506 is a 20HP Eurorack stochastic envelope generator with four channels of randomizable rise/fall timing, self-patching capability.
• 506 Stochastic Function Generator — The ADDAC 506 Stochastic Function Generator blends analog envelopes with digital randomness, offering four channels of generative modulation in 20HP.
• 506 VC Stochastic Function Generator — ADDAC 506 VC Stochastic Function Generator: 4-channel Eurorack envelope/slew generator with stochastic control, 20HP, 340€
• 506B — The ADDAC 506B is a 2HP Eurorack expander that adds trigger inputs and CV outputs to the 506, unlocking real-time stochastic control and generative patching.
• 506B VC Stochastic Function Generator Expansion — A 2 hp Eurorack expander that adds four trigger inputs and four CV outputs to the ADDAC506, powered via the host module and running reprogrammed firmware.
• 507 — The ADDAC507 uses Bézier curves to generate smooth, evolving random CV—chaos with shape, randomness you can actually control.
• 507 Random Bezier Waves — The ADDAC 507 Random Bezier Waves delivers two channels of smooth, Bezier-interpolated random CV—organic, evolving modulation that feels alive.
• 508 Spectral Processor — The ADDAC 508 Spectral Processor transforms sound into evolving textures with real-time spectral morphing—digital synthesis that feels alive.
• 508 Swell Physics — The ADDAC 508 Swell Physics (2024) uses ocean wave physics to generate evolving CV from 4 virtual buoys. Specs, simulation models, and pricing.
• 511 — The ADDAC System 511 is a 20HP Eurorack module that turns stochastic voltage into a compositional tool with 4 channels, sequencing, and deep CV control.
• 511 VC Stochastic Voltage Generator — The ADDAC 511 VC Stochastic Voltage Generator is a 20HP Eurorack module offering four-channel generative control with deep randomness, quantization.
• 601 — The ADDAC601 VC Fixed Filterbank is an 8-band analog Eurorack module that splits audio into spectral slices, with per-band VCA control and envelope follower CV outputs.
• 603 — The ADDAC 603 VC Triple Bandpass Filter brings vintage Korg PS-3300-style formant magic to Eurorack with aggressive gain, full CV control.
• 604 — A compact 6HP Eurorack dual analog multimode filter with stereo linking, 12dB/oct slopes, and no resonance CV—ideal for space-conscious setups.
• 604 Dual Filter — The ADDAC 604 Dual Filter (2020) packs two channels of brutal, character-rich analog filtering into 6hp. Specs, sound, and current pricing.
• 607 — The ADDAC 607 Crossover (€299) is a 6 HP Eurorack module that splits audio into three bands with switchable crossover points.
• 611 — The ADDAC 611 is a tube-driven Eurorack filter that embraces noise, distortion, and unpredictability for raw, character-rich sound shaping.
• 611 Gotharman's VC Tube Filter — A tube-powered Eurorack filter that trades precision for raw, howling character—each unit unique, unpredictable, and built to destroy sound beautifully.
• 701 — The ADDAC System 701 is a stable, no-frills analog VCO with CEM3340 character, octave switching, and onboard mixing—praised for its vintage warmth and tuning reliability.
• 701 VCO — The ADDAC 701 VCO Rev 2 packs CEM3340-based analog oscillation, waveform mixing, and LFO mode into 8 HP—offering pro features at a surprisingly fair price.
• 701.REV2 — The ADDAC 701.REV2 is a stable, no-nonsense analog VCO with CEM3340 core and onboard waveform mixing—reliable from bass to FM.
• 702 — The ADDAC 702 is a dual analog filter module with voltage-controlled mix, distortion, and phase inversion—raw, unpredictable, and fiercely musical.
• 702 VCF — The ADDAC 702 VCF is a dual-channel Eurorack filter inspired by the MS-20, with voltage-controlled mix, distortion, and Oscar-style coupling.
• 703 — The ADDAC 703 Discrete Mixer brings Moog CP-3-style analog coloration to Eurorack, with soft clipping, an inverted output, and a cult following.
• 703 Discrete Mixer — The ADDAC 703 Discrete Mixer is a CP3-inspired Eurorack module with a gritty, trimmable analog character and feedback routing—more than a mixer.
• 703 Dual VCA — The ADDAC 703 Discrete Mixer is a 4-channel Eurorack module with discrete transistor circuitry, feedback loop, and front-panel trimmers for custom saturation.
• 705 Dual Noise — The ADDAC 705 Dual Noise offers true analog white and pink noise in a compact 6HP Eurorack module—essential for percussion, modulation, and organic texture.
• 705 Stinggy Filter — The ADDAC 705 Stinggy Filter is a raw, character-driven Eurorack multimode filter inspired by the EMS Wasp, with distortion, self-oscillation.
• 710 — The ADDAC System 710 is a dual-channel isolated DI box that eliminates ground loops and noise in modular setups with transformer isolation and a 3-way ground switch.
• 710 Balanced Outputs — The ADDAC 710 Balanced Outputs is a no-nonsense Eurorack module that uses transformer isolation to eliminate hum and preserve signal integrity.
• 711 — The ADDAC System 711 is a passive Eurorack module that converts unbalanced signals to balanced via transformers, adding weight and studio-grade clarity.
• 711 Balanced Inputs — ADDAC System 711 Balanced Inputs (2022–) uses transformer coupling to eliminate noise when integrating external audio into modular systems.
• 712 — The ADDAC 712 Vintage Pre is a dual-channel discrete Eurorack preamp that emulates 1970s console circuitry, delivering warm saturation and unique DC-shift distortion.
• 712 Vintage Pre — The ADDAC 712 Vintage Pre is a dual-channel Eurorack preamp that emulates a 1970s discrete circuit, known for its musical saturation and unique bias-shift clipping.
• 712 Vintage Preamp — The ADDAC 712 Vintage Preamp is a discrete dual-channel Eurorack module that adds warm, musical saturation inspired by 1970s console preamps.
• 713 — The ADDAC 713 is a discrete stereo mixer with feedback, clipping, and gate generation—rarely clean, never boring. With the complete spec table.
• 713 Stereo Discrete Mixer — The ADDAC 713 Stereo Discrete Mixer delivers CP3-inspired analog grit, feedback-driven distortion, and stereo panning in 8HP of Eurorack mayhem.
• 714 — The ADDAC 714 Vintage Clip is a dual-channel soft clipping module with diode-based distortion and a fixed 3.3kHz low-pass filter for vintage-style warmth.
• 714 Vintage Clip — The ADDAC 714 Vintage Clip is a dual-channel soft clipping module with diode-based distortion and a fixed 3.3kHz low-pass filter for warm.
• 714 Vintage Clipper — The ADDAC 714 Vintage Clipper is a 6HP Eurorack module that delivers warm, diode-based soft clipping with a fixed 3.3kHz low-pass filter for authentic vintage saturation.
• 800 Series — The ADDAC 800X uses a premium nickel-core transformer to deliver silent, noise-free modular outputs—rare in its focus and unmatched in clarity.
• 800X — The ADDAC 800X is a transformer-isolated Eurorack output module that eliminates noise and ground loops with vintage-grade Hammond transformers and studio-level clarity.
• 800X High-End Outputs — The ADDAC 800X High-End Outputs module uses vintage-style audio transformers to eliminate hum and deliver pristine, balanced XLR outputs for Eurorack systems.
• 801 — The ADDAC System 801 is a compact 4HP dual-channel mixer that values function over flair—ideal for skiff builders who need clean summing without wasted space.
• 802 — The ADDAC System 802 packs five VCAs, dual mix buses, and bifunctional knobs into 14 HP of intelligent, tactile mixing for Eurorack.
• 802R — The ADDAC 802R flips the standard Eurorack layout for smarter cable routing, turning a 5-channel VCA mixer into a modular workflow essential.
• 803 — The ADDAC 803 Quadraphonic Spatializer brings true 3D sound placement to Eurorack with analog outputs and digital precision — a rare hybrid for immersive audio.
• 804 — The ADDAC 804 Audio Integrator bridges iOS devices and Eurorack, turning app audio into modular signals with built-in envelope followers.
• 805 — The ADDAC 805.VS2 is a versatile 8HP Eurorack VC signal router enabling 4-quadrant mixing, stereo panning, and dynamic CV/audio morphing.
• 805.VS2 — The ADDAC System 805.VS2 is a Eurorack VC signal router with 24 inputs, 12 outputs, and 4-quadrant mixing — a modular utility for dynamic audio and CV routing.
• 806 — The ADDAC System 806 brings Bluetooth audio straight into Eurorack, with stereo VCAs for CV-controlled manipulation of wireless streams.
• 807 — The ADDAC 807 is a Eurorack console-style mixer with CV-controlled faders, sends, and expands to 9 stereo channels. With detailed specs and production dates.
• 807A+ — The ADDAC 807A+ is a 6HP passive module that adds individual post-fader stereo outputs to the ADDAC807 mixing system. Includes detailed specs.
• 807B — The ADDAC 807B is a 24 HP Eurorack input console that seamlessly integrates external audio with CV-controlled level automation and studio-grade signal conversion.
• 807C — The ADDAC 807C expands the 807A/B mixer with 4 CV-controlled stereo channels, turning a modular console into a 9-channel analog powerhouse.
• 812A — ADDAC 812A LED Audio Meter – dual-channel Eurorack voltage meter with trimmable 11-LED display and buffered thru outputs.
• 812A Led Audio Meter — The ADDAC 812A LED Audio Meter is a 4 HP dual-channel voltage monitor with 11 LED pairs per channel, color-coded from green to red across 0–10V.
• 812V — The ADDAC 812V is a dual LED voltage meter for Eurorack, featuring trimmable displays, buffered thru outputs, and a clean black-panel design.
• 812VU — ADDAC 812VU: Dual analog VU meter for Eurorack, 8 HP, with switchable lamp and in-house trimmed levels. With detailed specs and production dates.
• 813 — ADDAC813 Stereo Mixer+ — 8 HP Eurorack module with 5 stereo channels and mono send/return. Compact, cascadable, and ideal for dense modular setups.
• 814 — The ADDAC System 814 is a 33HP Eurorack matrix mixer with DC coupling, scribble strips, and expandable design — powerful, flexible.
• 814 6x6 Stereo Matrix Mixer — The ADDAC 814 6x6 Stereo Matrix Mixer redefines Eurorack signal routing with expandable, DC-coupled stereo matrix flexibility and split-module clarity.
• 815 — The ADDAC 815 is a compact 6HP stereo mixer with a discrete class-A signal path that adds subtle analog warmth to Eurorack systems.
• 816 — ADDAC 816 (2025) Eurorack percussion VCA with built-in AD envelope — 5HP module for turning any signal into a punchy, saturated hit.
• 900B Busboard VS.2 — The ADDAC 900B Busboard VS.2 delivers reliable Eurorack power distribution with integrated +5V conversion—essential infrastructure for skiffs and DIY frames.
• 900PDO — The ADDAC 900PDO is a power delay module for old-style ADDAC busboards, designed to smooth startup current spikes in modular synth systems.
• ADDAC101 — The ADDAC101 brought accessible digital sampling to Eurorack with hands-on control, file quirks, and a cult following. With detailed specs.
• ADDAC102 — The ADDAC102 VC FM Radio brings live broadcasts and electromagnetic noise into Eurorack, with voltage-controlled tuning and skiff-friendly design.
• ADDAC102 Vc — ADDAC System ADDAC102 VC FM Radio — a skiff-friendly Eurorack module with full CV control over tuning, volume, seek, and mute.
• ADDAC103 — ADDAC103 T-Networks: 6HP Eurorack module with 4 analog voices inspired by vintage drum machine circuits. Simple, destructive, and oddly musical.
• ADDAC103 T-Networks — Four-voice Eurorack percussion module using Twin T-Network circuits for classic analog drum tones and weird filtering. Covers full specifications.
• ADDAC104 VC T-Networks — The ADDAC104 VC T-Networks is a 4-voice Eurorack module inspired by vintage drum machine circuits, offering raw, uncalibrated analog percussion with voltage control and a summed mix output.
• ADDAC105 — ADDAC System ADDAC105 4 Voice Cluster Eurorack module — four square-wave voices with individual VCAs, summed through a multimode filter. 8HP, DIY kit option.
• ADDAC105 4 Voice Cluster — ADDAC105 4 Voice Cluster packs 4 square oscillators, FM routing, and a multimode filter into 8 HP—compact, chaotic, and full of character.
• ADDAC106 — ADDAC System ADDAC106 T-Noiseworks — the final module in ADDAC's T-Networks series, a 4-voice Eurorack percussion module with per-voice frequency and decay controls. Announced March 2020.
• ADDAC107 Acid — The ADDAC107 Acid is a compact 9HP Eurorack synth voice from Portuguese manufacturer ADDAC System, integrating VCO, VCF, and VCA functionality into a
• ADDAC111 — The ADDAC111 brings precise, voltage-controlled .WAV playback to Eurorack with tactile loop controls, 1v/oct sample rate.
• ADDAC111 Ultra — ADDAC System ADDAC111 Ultra Eurorack .wav player module — upgrade to the ADDAC101 with micro SD storage, 16hp, $649. Covers production dates.
• ADDAC111B — The ADDAC111B is a trigger-based expansion for the ADDAC111, enabling instant recall of the first 8 samples—essential for live performance.
• ADDAC112 — The ADDAC112 is a 45HP Eurorack looper and granular processor with real-time OLED visualization, CV-rich control, and a split-panel design for performance clarity.
• ADDAC112 Looper — ADDAC112 VC Looper & Granular Processor (2021) — dual-panel Eurorack module with 5-minute stereo buffers, SD storage, and a movable patch bay.
• ADDAC112 Vc — ADDAC System ADDAC112 VC Looper & Granular Processor — 45HP Eurorack module with 5-minute buffer, 32-bit DSP, and split I/O module.
• ADDAC112SF — The ADDAC112SF is a powered desktop frame that turns the ADDAC112 granular looper into a standalone instrument—no case required.
• ADDAC200 — The ADDAC200 is a 2HP passive multiple for Eurorack, offering two 4-fold signal splits in a compact, no-power-draw design.
• ADDAC200A — The ADDAC200A is a no-nonsense Eurorack current meter that prevents overloads with a real-time LED readout—essential infrastructure, not a sound module.
• ADDAC200B — The ADDAC200B is a 2HP Eurorack buffered multiple that solves signal distribution issues in tight modular setups without sacrificing space or reliability.
• ADDAC200BNC — The ADDAC200BNC is a passive 2HP Eurorack module that provides two locking BNC outputs for reliable signal probing and external routing.
• ADDAC200CT — The ADDAC200CT is a Eurorack cable tester that checks 3.5mm and ribbon cables for continuity and shorts—essential for system reliability.
• ADDAC200P — The ADDAC200P is a compact Eurorack power monitor with ±12V LED indicators—simple, reliable, and essential for any modular setup.
• ADDAC200PI — The ADDAC200PI bridges modular synths and guitar pedals with clean, compact signal conversion—no noise, no fuss, just function.
• ADDAC200Pi Pedal — The ADDAC200PI Pedal Integrator is a small 4 hp Eurorack utility designed to bridge the gap between modular synth levels and the instrument levels…
• ADDAC200RM — The ADDAC200RM is a precision analog power rail monitor for Eurorack, offering real-time ±12V voltage feedback in a compact 4HP module.
• ADDAC200S — The ADDAC200S solves Eurorack's 1/4-inch to 3.5mm cable chaos with a passive, 4 HP rackmount adapter—simple, reliable, and power-free.
• ADDAC201 — The ADDAC201 is a compact Eurorack CV inverter with offset and polarity indicators—essential utility for modular synthesis.
• ADDAC202 — A compact, dual-channel Eurorack amplifier with polarity monitoring—essential for precise CV and audio gain control in modular synthesis.
• ADDAC203 — The ADDAC203 is a dual-channel CV mapper for Eurorack, prized for precise voltage scaling, offset, and attenuversion in modular synthesis.
• ADDAC203 REV.02 — The ADDAC203 REV.02 is a dual-channel CV processor with gain, offset, and CV-controllable offset—compact, essential, and DIY-friendly.
• ADDAC204 — The ADDAC204 is a voltage-controlled CV mapper that transforms control voltages with precision, offering normal, inverted.
• ADDAC205 — The ADDAC205 packs dual oscilloscopes and arbitrary waveform generation into 10 HP—essential for debugging and control in modular synthesis.
• ADDAC205 Dual — ADDAC System ADDAC205 Dual Oscilloscope & AWG — a compact 10HP Eurorack module with two dual-channel oscilloscopes, OLED displays.
• ADDAC206 — The ADDAC206 is a compact Eurorack switching sequencer that turns simple sequences into evolving, performable patterns with clock division.
• ADDAC207 — The ADDAC207 Intuitive Quantizer brings melodic order to modular chaos with a tactile piano-grid interface and four-channel voltage-controlled quantization.
• ADDAC212 — The ADDAC212 is a 4-channel VC attenuator and offsetter designed to unify and shape multiple CV signals—ideal for syncing envelopes or modulations in complex Eurorack patches.
• ADDAC213A — The ADDAC213A solves Eurorack's cable chaos with a passive 8-channel bridge—expandable to 24 signals—so you can link cases cleanly without power or patch cables.
• ADDAC213B — The ADDAC213B is a passive Eurorack bridge module that routes 8 CV/audio signals silently and reliably—no power, no fuss, just clean signal routing.
• ADDAC213C — The ADDAC213C is a passive 1U Eurorack bridge module that routes 8 CV/audio signals via ribbon cable—ideal for untangling modular setups.
• ADDAC214 — The ADDAC214 VC Rotator is a 6HP Eurorack module that rotates 4 inputs across 4 outputs in 4 steps, with voltage control, anti-pop switching.
• ADDAC216 — The ADDAC216 is a dual-channel analog utility that sums, subtracts, rectifies, and offsets signals—making it a modular mathematician for audio and CV.
• ADDAC216 Sum — ADDAC System ADDAC216 Sum & Difference — a Eurorack utility module with two independent sections for summing and subtracting input signals.
• ADDAC218 — The ADDAC218 is a compact 4HP Eurorack attenuverter module with normalized channels and user-labeling zones—simple, essential, and brilliantly functional.
• ADDAC220 — The ADDAC220 Dual Envelope Follower+ converts audio dynamics into smooth, filtered control voltage with stereo tracking and digital precision.
• ADDAC301 Floor — ADDAC301 Floor Control — 4 HP Eurorack expression/sustain pedal interface with range & offset knobs, gate output, and +5V bus board adaptor. Listed at $90.
• ADDAC301B Dual — ADDAC System ADDAC301B Dual Expression Pedal Attenuator — a passive 4 HP Eurorack module for controlling CV or audio amplitude with an expression pedal.
• ADDAC301C Dual — ADDAC System ADDAC301C Dual Sustain Pedal Switcher — a passive 4 HP module for gating CV or audio with a sustain pedal. Little else is documented.
• ADDAC320 — The ADDAC320 Servo Control automates knob turning via CV, inspired by Neil Young’s Whizzer—mechanical modulation for non-CV gear.
• ADDAC403 — The ADDAC403 redefines Eurorack timing with musical time signatures, phasing engines, and deep CV control in 16HP. Find detailed specs here.
• ADDAC501 — The ADDAC501 brings analog randomness with voltage, timing, and Brownian motion controls in a compact 8 HP Eurorack module.
• ADDAC501B — The ADDAC501B adds gate outputs and glide effects to the ADDAC501, turning random voltages into rhythmic, textured triggers with a twist.
• ADDAC506 — ADDAC506 is a 4-channel stochastic envelope generator with random slew, sum/average CV, and expansion support. Covers full specifications.
• ADDAC506B — The ADDAC506B is a 2HP Eurorack expander that adds trigger inputs and CV random outputs to the ADDAC506, enabling deep stochastic control.
• ADDAC511 — The ADDAC511 is a 20HP Eurorack module with 4-channel stochastic voltage generation, OLED interface, and deep probability control.
• ADDAC601 — The ADDAC601 VC Fixed Filterbank is an 8-band Eurorack module with voltage-controlled VCAs and envelope followers per band — spectral control redefined.
• ADDAC602 — The ADDAC602 is a passive Eurorack ring modulator using transformers and germanium diodes—no power, no knobs, just raw inharmonic magic in 4 HP.
• ADDAC603 — The ADDAC603 is a 22HP Eurorack triple bandpass filter with distortion, feedback, and summing—built for sonic mayhem. Includes detailed specs.
• ADDAC604 — ADDAC604 Dual Filter: a compact 6 HP Eurorack module with stereo/dual mono multimode filtering, independent resonance, and normalled inputs.
• ADDAC611 — The ADDAC611 packs a 1970s vacuum tube into a Eurorack module, delivering raw, unpredictable filtering and brutal analog distortion.
• ADDAC701 — The ADDAC701.REV2 is a compact, stable analog VCO with onboard waveform mixing, ideal for Eurorack users who want rich analog tone in 8 HP.
• ADDAC702 — ADDAC702 Dual Voltage Controlled Filter: Eurorack module with MS-20-inspired dual filters, vactrol-style smoothing, and built-in distortion.
• ADDAC702 Dual — ADDAC System ADDAC702 Dual VC Filter — ADDAC's first voltage-controlled filter, a 16HP Eurorack module inspired by the MS-20 with two independent filters and vactrol-simulating Smooth circuit.
• ADDAC703 — The ADDAC703 is a discrete analog Eurorack mixer inspired by the Moog CP-3, known for its warm saturation, feedback loops.
• ADDAC705 — The ADDAC705 brings the raw, chaotic filter of the EDP Wasp into Eurorack, packing four filter types and built-in fuzz into just 8HP.
• ADDAC709C — The ADDAC709C brings the analog organ magic of the EHX C9 pedal into Eurorack with full CV control—imperfect, expressive, and utterly alive.
• ADDAC709M — The ADDAC709M brings the haunted tape sound of the Mellotron to Eurorack with full CV control—imperfect, emotional, and utterly unique.
• ADDAC710 — ADDAC710 Balanced Outputs – 6 HP Eurorack module with transformer-isolated XLR outputs, 40 mm depth, and ground loop protection.
• ADDAC711 — ADDAC711 is a dual-channel Eurorack DI box with transformer isolation, XLR/TRS inputs, and LIFT/FLOAT/GND switching for noise-free signal routing.
• ADDAC712 — The ADDAC712 is a dual-channel Eurorack preamp that emulates 1970s discrete circuitry, delivering warm saturation, hard clipping.
• ADDAC712 Vintage — The ADDAC712 Vintage Pre is a dual-channel discrete gain staging amplifier in the Eurorack format, part of ADDAC System's 700 Series.
• ADDAC712 Vintage Pre — ADDAC712 Vintage Pre brings 1970s discrete preamp warmth to Eurorack, with dual channels of saturation, soft-to-hard clipping, and LED monitoring.
• ADDAC713 — The ADDAC713 is a discrete analog stereo mixer with feedback-driven clipping and fixed low-pass filtering—simple in layout, wild in character.
• ADDAC714 — The ADDAC714 is a dual-channel analog soft clipper with passive diode clipping and a fixed 3.3kHz low-pass filter for vintage-style warmth in 6HP.
• ADDAC714 Vintage Clip — The ADDAC714 Vintage Clip is a dual-channel analog soft clipper with fixed 3.3kHz filtering, delivering warm, vintage-inspired saturation in 6HP.
• ADDAC800 — The ADDAC800X (2020s?) is a transformer-isolated Eurorack output module with balanced XLRs, 8 HP size, and studio-grade noise rejection.
• ADDAC800X — The ADDAC800X is a transformer-isolated Eurorack output module with balanced XLRs, headphone amp, and ground loop protection.
• ADDAC801 — The ADDAC801 is a compact 4HP Eurorack mixer with three channels and an inverted output—simple, utilitarian, and space-efficient.
• ADDAC802 — The ADDAC802 VCA Quintet Mixing Console is a 12 HP Eurorack module with 5 independent VCAs, dual mixing paths, and smart routing—now out of production.
• ADDAC802R — ADDAC802R VCA Quintet Reversed Panel – 12 HP Eurorack module with 5 VCAs, dual mix paths, and master VCA with Pre/Post outputs.
• ADDAC803 — The ADDAC803 brings professional quadraphonic spatialization to Eurorack with VBAP precision and analog warmth—rare, focused, and deeply expressive.
• ADDAC804 — The ADDAC804 Audio Integrator bridges iOS apps and Eurorack modular systems with bidirectional audio and envelope following.
• ADDAC805 — The ADDAC805 is a compact 4HP Eurorack panner and crossfader with CV control, prized for its simplicity and analog transparency.
• ADDAC805.VS2 — The ADDAC805.VS2 is a flexible Eurorack VC signal router with three X-faders, enabling 4-quadrant mixing and stereo morphing—deeply useful.
• ADDAC807 — The ADDAC807 is a dual-module Eurorack stereo mixer with 5+4 expandable channels, full CV control, sends, returns, and matrix routing—studio-grade mixing in modular format.
• ADDAC807A — The ADDAC807A brings full analog console control to Eurorack, with 5 stereo channels, CV automation, and expandable routing—rare depth in a modular mixer.
• ADDAC807B — The ADDAC807B Inputs Console is a passive Eurorack expander that houses all jacks for the ADDAC807A, enabling clean cable management and modular scalability.
• ADDAC807C — The ADDAC807C expands the ADDAC807 mixer with 4 full-featured stereo channels, completing one of Eurorack's most powerful analog console systems.
• ADDAC809 — The ADDAC809 Chain Router (2022) is a 6 HP Eurorack utility that redefines signal routing with CV-controlled chains. Find full specifications here.
• ADDAC810 — The ADDAC810 Phono Pre-Amp (????) brings vinyl into Eurorack with RIAA equalization, 4 HP size, and hum-canceling grounding. Specs, pricing, and use.
• ADDAC813 — The ADDAC813 Stereo Mixer+ (8 HP) offers five stereo channels, a mono send/return, and unity-gain cascade input. Specs, pricing, and user insights.
• ADDAC814 — The ADDAC814 (2025) is a 6x6 stereo matrix mixer with 36 color-coded knobs, DC coupling, and expandable design. Specs, pricing.
• ADDAC815 — The ADDAC815 Mixology (—) is a 10HP Eurorack FX router that transforms signal flow into performance. Original price: €160.
• ADDAC816 — The ADDAC816 Percussion VCA packs an AD envelope and exponential VCA into 5HP, turning any signal into a punchy, saturated drum with minimal patching.
• Clip — The ADDAC714 Vintage Clip is a dual-channel analog soft clipper with fixed 3.3kHz filtering, designed to add warm, vintage-style saturation to Eurorack systems.
• Control — The ADDAC320 Servo Control ($133) uses a 270° servo to mechanically turn knobs via CV—like Neil Young's Whizzer in 4HP. Specs, setup tips, and eBay listings.
• Floor Control — The ADDAC311 Ultra Floor Control (2022) brings 5 footswitches and 5 expression inputs to Eurorack via a 6HP module and floor unit.
• Gates — The ADDAC304 Manual Gates (8 HP) offers eight tactile triggers with four channels that pass signals when pressed. Specs, pricing, and DIY options.
• Looper & Granular Processor — ADDAC112 VC Looper & Granular Processor (2021) — a 45HP Eurorack powerhouse for deep granular manipulation and real-time looping.
• Mixer — The ADDAC802 Quintet Mixing Console (update model) packs 5 VCAs, dual mix paths, and daisy-chaining into 12 HP. Specs, routing tips, and current pricing.
• modules — ADDAC712 VINTAGE PREAMP module by ADDAC System, a dual-channel discrete preamp for Eurorack, based on 1970s analog design.
• Oscilloscope & AWG — The ADDAC205 Dual Oscilloscope & AWG packs two 8-bit scopes and an AWG into 10 HP—useful lab tool or lazy repackaging? Covers detailed specs.
• Pedal — The ADDAC312 Gate Pedal (2025) delivers a clean +5V trigger via a debounced switch in a recycled wood enclosure. Ideal for Eurorack loopers and hands-free control.
• Quintet Reversed Panel — The ADDAC802R VCA Quintet Reversed Panel flips the mixer layout for skiff-friendly patching. 12 HP, dual paths, smart knob design.
• relabi — A Eurorack module combining a complex CV generator with quad threshold gate outputs, part of the ADDAC400 Series. Includes full specifications.
• REV.02 — The ADDAC300 REV.02 Power Starvation lets you throttle module voltage for glitchy, unstable sounds. Specs, design, and history of this Eurorack utility.
• Sensing — The ADDAC303 Muscle Sensing turns muscle tension into CV using electrodes—part of ADDAC's Expressive Controls Series. Specs, history, and real-world use.
• Series — The ADDAC300 Series brings muscle, motion, and foot control to Eurorack. Muscle sensing, servo motors, power starvation — how they work and why they matter.
• Stochastic Function Generator — The ADDAC506 VC Stochastic Function Generator brings quad analog envelopes, digital control, and built-in randomness to Eurorack.
• T-Networks — The ADDAC103 T-Networks is a 6 HP Eurorack percussion module with 4 analog voices, inspired by vintage drum machine circuits.
• to CV — The ADDAC308 Light to CV turns light into control voltage with dual outputs, slew control, and external sensor. Specs, use cases, and current pricing.
• Transitions — The ADDAC306 VC Transitions is a 5-channel CV macro controller for Eurorack—compact, hands-on, and perfect for live performance.