#Modular Synthesizer

A guide series on the OXI ONE MKII. In EP.1, we cover the overall structure and basic operational flow of the OXI ONE MKII.

Episode 2 of the OXI ONE MKII guide series. A detailed walkthrough of Mono Mode — the most basic mode — covering everything from recording patterns to advanced techniques.

OXI ONE MKII guide series EP.4. A detailed look at the Mono Mode Accumulator feature, covering modes, Trig settings, logic conditions, Track Accumulation, and Poly Mode support.

An introduction to the Weston Precision Audio M3S Mini Stereo Mixer. A compact 3-channel stereo mixer packed into just 6HP. Features configurable AC/DC coupling and linear/log potentiometer response. Shallow 25mm depth design optimized for compact performance cases.

An introduction to the Weston Precision Audio Trivium. An analog multifunction module born from a collaboration between Weston Precision Audio and artist Trovarsi. Packs a discrete OTA state variable VCF, VCA with overdrive, dual envelopes (ADSR + AD/AR), and flexible routing into 12HP. Shallow 26mm depth design optimized for compact performance cases.

An introduction to the 4ms Company MetaModule Audio Expander. The MetaModule Audio Expander is an audio I/O expansion module for the MetaModule. It adds 6 inputs and 8 outputs at 24bit/48kHz, connected via ribbon cable.

An introduction to the 4ms Company MetaModule Button Expander. The MetaModule Button Expander is an 8-button expansion module for the MetaModule. Each button can be assigned to up to 8 parameters, and up to 4 units can be daisy-chained.

An introduction to the 4ms Company MetaModule. MetaModule is a groundbreaking Eurorack module that bridges hardware and software. It lets you control over 1,500 VCV Rack plugins with physical knobs and jacks, offering 160+ built-in modules and advanced patching capabilities.

An introduction to the 4ms Company MetaModule Wi-Fi Expander. The MetaModule Wi-Fi Expander is a Wi-Fi expansion module for the MetaModule. It enables wireless patch file transfer and management, featuring a browser-based interface.

An introduction to the Olivia Artz Modular Tiny Time Machine. The Tiny Time Machine is a compact 8HP granular delay module featuring the same engine as the Time Machine. Despite its small package, it can produce clock-synced rhythmic glitch effects, reverb, and chaotic acoustic effects.

An introduction to the OXI Instruments OXI ONE MKII. OXI ONE MKII is the next-generation model with an 8-part sequencer. With expanded generative features, a large OLED display, and control of up to 64 tracks, it represents a massive evolution from the original OXI ONE as an all-in-one sequencer.

An introduction to the OXI Instruments OXI Pipe MKII. The OXI Pipe MKII is a Eurorack breakout module for the OXI ONE MKII. It integrates the OXI ONE MKII's 8 Gate/CV outputs into a Eurorack environment for smoother integration with your modular system.

An introduction to the Weston Precision Audio HV1 Hybrid Oscillator. The HV1 is a hybrid VCO built on an analog triangle wave core combined with a digital phase shifter and wavetable functionality. It features thru-zero FM, linear phase modulation, wave morphing, and more, achieving both precise pitch tracking and rich harmonic generation. A next-generation oscillator module with 16-bit/150kHz high-resolution digital processing and flexible timbral changes via CV.

An introduction to the Weston Precision Audio SV1 Dual / Stereo Voltage Controlled Amplifier. The SV1 is a dual analog VCA module featuring both Clean and Vintage circuits per channel. It achieves both precise gain control and saturation effects, with zero-cross detection, stereo link, overdrive switch, and more packed into 12HP.

An introduction to the ADDAC200PI Pedal Integrator. The ADDAC200PI Pedal Integrator is a utility module that attenuates modular output to line level suitable for effect pedals and amplifies the return signal back to modular level. It also features 3.5mm/6.35mm jack conversion, providing a simple bridge between modular and external gear.

An introduction to the ADDAC200S Size Matter. The ADDAC200S Size Matter is a utility module that handles 6.35mm and 3.5mm jack conversion in a single unit. It features 3 pairs of passive conversion channels, requires no power, and is easy to install. Compatible with external effects and audio interfaces.

An introduction to the ADDAC511 VC Stochastic Voltage Generator. The ADDAC511 VC Stochastic Voltage Generator is a 4-channel CV generation module capable of high-precision, multi-layered control of stochastic voltage generation. It integrates quantization, distribution selection, interpolation, probability modulation, and other features for intuitive per-step CV generation control. An evolved CV generation control center inheriting the design philosophy of the 2013 ADDAC501 Complex Random. With state saving, clock sync, CV control, a sequencer, and a quantizer, it is an advanced random CV generation module.

An introduction to the ADDAC802 VCA Quintet. The ADDAC802 VCA Quintet is a 5-channel module that integrates analog VCA and mixer functionality. Each channel is equipped with an attenuator-equipped CV input and 3.5mm output. It supports a variety of output options including pre/post VCA, solo, mix, and master, and also features linear/exponential response curve switching. The mode switch allows instant analog switching of each channel's behavior.

An introduction to the ADDAC219IN Stereo > Dual Mono. The ADDAC219IN Stereo > Dual Mono is an interface module that separates external line-level stereo signals into individual left and right mono outputs. It accepts a 3.5mm stereo TRS jack input, internally splits the signal into left and right mono, and outputs each through independent 3.5mm mono output jacks. It also boosts line-level signals to Eurorack level. With two conversion sections, this module serves as a bridge between external gear and your Eurorack system.

An introduction to the ADDAC219OUT Dual Mono > Stereo. The ADDAC219OUT Dual Mono > Stereo is a passive 3HP module that provides a simple way to send signals from your Eurorack system to external stereo gear. It combines two mono inputs (left/right) into a single TRS stereo output, attenuates the modular synth level down to line level, and outputs through a 3.5mm TRS stereo jack. With three independent sections, it can send multiple outputs to external gear at once.

An introduction to the ADDAC312 Gate Pedal. The ADDAC312 Gate Pedal is a foot switch controller that sends a +2.5V gate signal from the floor. Ideal for situations where you need to control recording, playback, or effect switching without using your hands, it extends the operability of your modular system. Equipped with a debounce circuit to suppress unwanted noise and false triggers. Beautifully finished in birch plywood with walnut veneer.

An introduction to the ADDAC313 Triple Gate Pedal. The ADDAC313 Triple Gate Pedal is an external pedal-type gate controller with three independent foot switches. Each switch outputs a stable +2.5V gate signal, serving as an intuitive interface for modular systems. Powered by a 9V battery for portability, it is suited for live performance and real-time control applications.

OXI ONE MK2 announced. An 8-part sequencer with 128-pad grid, 8 CV/Gate outputs, MIDI, Bluetooth, and USB connectivity. Features new function buttons, large screen, and advanced sequencing firmware over the original OXI ONE, delivering unparalleled control and streamlined workflow.

An introduction to the Recovery Effects And Devices Cutting Room Floor V3.

An introduction to the Recovery Effects And Devices ADSR.

An introduction to the Recovery Effects And Devices Analog Kick.

An introduction to the Recovery Effects And Devices Motion Pictures. A 10HP module integrating Delay and Reverb. Delay Time, Feedback, and Mix support CV control, and external clock tempo sync is also available.

A guide for those wondering about modular synth power supplies. Part 4 covering PSU rated current and what happens when you exceed capacity.

A guide for those wondering about modular synth power supplies. Part 3 covering current draw and module power consumption.

A guide for those wondering about modular synth power supplies. Part 2 covering +5V voltage, cases, bus boards, and AC adapters.

A guide for those wondering about modular synth power supplies. Do I really understand how this works? Is it okay to just use it without fully knowing? This article addresses those concerns.

I was reading a book called Contingency, Irony, and Solidarity and got inspired to write about music.

An introduction to the RYK Modular ALGO. ALGO is a complex oscillator bank based on FM Synthesis. It features an intuitive, analog-inspired interface for generating the complex harmonies that make FM synthesis so appealing. Additional features like wave fold, chorus, wave warp, detune, and a built-in VCA make this a feature-rich oscillator.

An introduction to the ADDAC900PDN Power Delay for New style Busboards. The ADDAC900PDN is a small PCB that attaches to a busboard's power socket to delay the power supply. By inserting the ADDAC900PDN, you can delay the power supply to a specific module by 3 seconds.

A column about how clipping audio can actually sound great. Explains what clipping means and how different mixers produce different results.

An introduction to the ADDAC713 Stereo Discrete Mixer. The ADDAC713 is a compact yet feature-rich stereo mixer. It features 3 stereo input channels with Pan control and 1 mono input channel, mixing them together. Each channel and the master output have dedicated gain knobs for flexible volume adjustment. Additionally, it includes a hard clipping function for the input sources, producing dramatic tonal changes. In other words, it can be described as a stereo mixer with built-in hard distortion capabilities.

An introduction to the OXI Instruments OXI Meta. OXI Meta is a live performance-oriented stereo effects module with 6 switchable transition effects. It enables dynamic transitions commonly used in dance music with high-quality effects.

An explanation of the tools needed for synth DIY. What does soldering involve? What else do you need besides a soldering iron? A column for those with such questions.

An explanation of synth DIY and DIY kits. For those wondering what it means to DIY a synth and what DIY kits are, this article provides an introduction.

An introduction to the Olivia Artz Modular Time Machine. The Time Machine is a unique DSP effect module based on a clock-syncable 8-tap stereo delay. It can mix eight delay lines with delay times ranging from milliseconds to several minutes.

An introduction to the AI Synthesis AI022 Harmonic Mixer. The AI022 Harmonic Mixer is a mono 3-channel mixer module. As you increase the gain, it enriches the harmonics and adds warmth and distortion to the input audio signal.

An introduction to the AI Synthesis AI026 Line I/O Interface. The AI026 Eurorack Line Interface converts between line-level signals (approximately +/-2V) and the signal levels commonly used by Eurorack modules (approximately +/-5V). This allows you to boost low-voltage line-level signals to standard modular synth levels, or perform the reverse.

An introduction to the AI Synthesis AI106 West Coast Mixer. The AI106 is a mono 3-channel mixer module that incorporates mixer design elements from vintage West Coast synthesizers, adding character and harmonic changes to input waveforms.

An introduction to the Weston Precision Audio 2V2 Dual Analog Oscillator.

An introduction to the Weston Precision Audio AD110 Analog Drums. The AD110 is a 6-voice analog drum module inspired by a vintage Japanese machine bearing the same number. Despite its compact 16HP size, it can generate six voices: Kick, Snare, Hand Clap, Closed Hi-Hat, Open Hi-Hat, and Ride Cymbal.

An introduction to the Weston Precision Audio B2 Kick / Bass Synth Voice.

An introduction to the Weston Precision Audio H1 Analog Harmonizer.

An introduction to the Weston Precision Audio PA0 Phase Animated Oscillator.

An introduction to the Weston Precision Audio SE1 Shaped VC Envelope.

An introduction to the Weston Precision Audio SF1 Dual / Stereo VCF.

An introduction to the Weston Precision Audio TZ0 Thru-Zero Oscillator.

An introduction to the ADDAC System ADDAC401 Gated Envelope Follower VS2. The ADDAC401 is a module that combines standard envelope follower functionality with eight gate outputs. The eight gate outputs produce gate CV corresponding to the input audio level across eight stages.

An introduction to the ADDAC System ADDAC304 Manual Gates. The ADDAC304 is a manual gate output module with eight momentary switches. While this module simply outputs gate signals while the buttons are held, it is widely applicable in building modular systems.

An introduction to the ADDAC System ADDAC305 Manual Latches. The ADDAC305 is a manual gate output module with eight latch switches. While this module simply outputs gate signals while the switches are ON, it is widely applicable in building modular systems.

An introduction to the ADDAC System ADDAC216 Sum & Difference. The ADDAC216 is essentially a two-section mixer, but this two-section mixer is capable of diverse CV synthesis processing. Each section has two CV input jacks, offering individual CV Attenuvert, mixing of two CVs, Full Wave Rectification, AC coupling, signal inversion, and average calculation -- all in a single module.

An introduction to the ADDAC System ADDAC217 Quad Gate to Trigger. The ADDAC217 is a 4-channel Gate to Trigger conversion utility module. It converts Gate CV signals with temporal duration into 1ms Trigger CV signals.

An introduction to the ADDAC System ADDAC112 VC Looper & Granular Processor. The ADDAC112 is a looper and granular processor with numerous parameters controllable via CV.

An introduction to the ADDAC System ADDAC210 Open Heart Surgery. The ADDAC210 is a development platform for Eurorack electronics enthusiasts. It's a module that comes complete with a breadboard, potentiometers, switches, jacks, and more. All onboard components are accessible from the pin headers at the top. An Arduino shield can be mounted on the back, providing powerful support for Eurorack module development.

An introduction to the ADDAC System ADDAC215 Dual S&H+. The ADDAC215 Dual S&H+ is a dual Sample & Hold module. In addition to its core S&H functionality, this module offers a diverse set of features including sum/difference/average outputs, noise generation, Track & Hold, and Slew.

An introduction to the OXI Instruments OXI Coral. OXI Coral is an 8-voice multitimbral polyphonic synthesizer module. It features effects like chorus and reverb, a low-pass filter, custom wavetable support, and multiple firmware options, making it a high-spec module that fully leverages the advantages of digital technology.

An introduction to the AI Synthesis AI017 Low Pass Gate. The AI017 is a modern low pass gate based on a classic design, with added resonance and depth parameters, as well as the ability to function as a VCA and VCF. DIY kits are also available.

An introduction to the AI Synthesis AI008 Eurorack Matrix Mixer. The AI008 is a 4-input, 4-output matrix mixer. DIY kits are also available.

An introduction to the AI Synthesis AI001 Multiple. The AI001 Multiple is a compact 2HP passive multiple. Its DIY kit has few parts and can be assembled quickly, making it ideal for getting started with modular synth DIY.

An introduction to the AI Synthesis AI018 Stereo Matrix Mixer. The AI018 is an 8-input, 8-output matrix mixer that allows flexible routing of each input to any output. DIY kits are also available.

An introduction to the Divergent Waves Sycamore. Sycamore is a random loop sequencer. It internally generates random number arrays of arbitrary length and ultimately outputs scale-quantized 1V/Oct CV from two outputs. It offers diverse control via CV and gate triggers, and is a significantly expanded design based on the ideas from Mutable Instruments' cancelled Seeds project (2015).

An introduction to the ADDAC System ADDAC218 Attenuverters. The ADDAC218 Attenuverters is a module equipped with 3 channels of Attenuverters.

An introduction to the ADDAC701.REV2 VCO. The ADDAC701 is a standard analog VCO from ADDAC System. This module is the new REV2 revision, featuring improved pitch accuracy and additional functions over the original REV1.

An introduction to the ADDAC System ADDAC207 Intuitive Quantizer. The ADDAC207 Intuitive Quantizer is a 4-voice quantizer with intuitive operation.

I DIY'd a eurorack modular synth case from acrylic. Here's how I made it.

An introduction to the Mordax DATA. DATA is a multifunction utility module for Eurorack modular synthesizers. It includes an oscilloscope, spectrum analyzer, spectrograph, tuner, and voltage monitor, as well as a 2-voice digital oscillator and clock generator.

An introduction to the OXI Instruments OXI ONE. OXI ONE is a portable all-in-one sequencer. With 8 Gate / 8 CV outputs and MIDI I/O, it's a new electronic instrument that matches modular systems, machine live setups, and DAW-based music production.

An introduction to the Meng Qi DSV. DSV is a module that attenuates stereo (2x mono) signals.

An introduction to the x0x-heart available at Takazudo Modular. The x0x-heart is a replica module that recreates the iconic TB-303 sound using currently available components, housed in a Eurorack format. You can play 303 sounds using your preferred sequencer.

An introduction to the ADDAC203 REV.02 CV Mapping. The ADDAC203 REV.02 CV Mapping is a dual-channel CV adjustment module. In addition to attenuating/inverting input CV, it can also offset. It further features a CV input jack for offset and the ability to change the attenuator's maximum amplification to 10x gain.

An introduction to the ADDAC604 Dual Filter. The ADDAC604 Dual Filter is a dual-channel multimode filter. The two channels can be used as two independent mono filters, or as a stereo filter.

An introduction to the ADDAC104 VC T-Networks. The ADDAC104 VC T-Networks is a module that generates four voices of percussion sounds described as click/blip sounds. The frequency of each voice can be controlled via knobs and CV input.

An introduction to the ADDAC106 T-Noiseworks. The ADDAC106 T-Noiseworks is a module that generates four voices of noise-based percussion sounds. The texture of the sounds is similar to hi-hat, snare, and kick sounds from classic rhythm machines like the TR-808. However, the sounds this module produces are raw percussion voices at a stage where analog circuitry is still shaping noise, far from evoking the sound of a physical instrument.

An introduction to the ADDAC714 Vintage Clip. The ADDAC714 Vintage Clip is a dual-channel soft clipping module. It produces a pleasant distortion effect through its combination of analog circuits.

An introduction to the ADDAC712 Vintage Pre. The ADDAC712 Vintage Pre is a dual-channel discrete gain stage amplifier based on a famous discrete preamp board used in legendary equipment from the 1970s. In short, it produces a pleasing saturation/distortion effect.

An introduction to the ADDAC107 ACID Source. The ADDAC107 ACID Source is a module that compactly combines all the elements needed to create acid sounds into a single unit. It contains a VCO, VCF, and VCA, and the VCA's unique clipping design works in harmony with the VCF characteristics to produce acid sounds reminiscent of the TB-303.

An introduction to the RYK Modular Vector Wave. Vector Wave is an oscillator module that leverages the richness of digital design, built on FM Synthesis and Vector Synthesis, packed with Envelope, LFO, VCA, VCF and more, all driven by 16 oscillators.

An introduction to the RYK Modular Night Rider. Night Rider is a digital module that combines a 4-channel filter bank with a 6-stage sequencer, enabling flexible modulation capabilities.

An introduction to the NoisyFruitsLab Dual VCA. Dual VCA is a 2-channel VCA. Each VCA features knob-based level control and two CV-based level controls.

An introduction to the NoisyFruitsLab 5MX Mixer. The 5MX Mixer is a simple 5-channel mixer.

An introduction to the NoisyFruitsLab VU Level Meter. The VU Level Meter is a module that recreates a classic analog level meter using LEDs.

An introduction to the NoisyFruitsLab 808 Snare Drum. The 808 Snare Drum is a drum module that reproduces the TR-808 snare drum sound using analog circuitry.

An introduction to the NoisyFruitsLab Kick V2. Kick V2 is an 808-style kick drum module with thoughtful controls.

An introduction to the NoisyFruitsLab Sproom DSP. The Sproom DSP is a compact multi-effect module.

An introduction to the Meng Qi Pe2. The Pe2 is a passive transformer module that converts between balanced and unbalanced connections, equipped with a ground lift switch.

An introduction to the Divergent Waves Dice. Dice is a 1-in, 6-out probabilistic signal router / gate generator.

An introduction to the Meng Qi DPLPG. DPLPG stands for Dual Passive Low Pass Gate — a 2-channel low pass gate module.

OXI ONE guide series. This second installment covers loop range settings, long sequence configuration, and more.

OXI ONE guide series. This first installment covers global settings and basic Mono mode operation.