ADDAC System: ADDAC200PI Pedal Integrator

2025/06/01|

• #ADDAC System
• #Modular Synthesizer
• #utility
• #audio-io

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.

ADDAC System: ADDAC200S Size Matter

2025/06/01|

• #ADDAC System
• #Modular Synthesizer
• #utility
• #audio-io

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.

ADDAC System: ADDAC511 VC Stochastic Voltage Generator

2025/06/01|

• #ADDAC System
• #Modular Synthesizer
• #random
• #Modulation（モジュレーション）
• #CV（コントロール電圧）

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.

ADDAC System: ADDAC802 VCA Quintet

2025/05/31|

• #ADDAC System
• #Modular Synthesizer
• #VCA（Voltage Controlled Amplifier）

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.

ADDAC System: ADDAC219IN Stereo > Dual Mono

2025/05/26|

• #ADDAC System
• #Modular Synthesizer
• #utility
• #audio-io

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.

ADDAC System: ADDAC219OUT Dual Mono > Stereo

2025/05/26|

• #ADDAC System
• #Modular Synthesizer
• #utility
• #audio-io

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.

ADDAC System: ADDAC312 Gate Pedal

2025/05/25|

• #ADDAC System
• #Modular Synthesizer
• #standalone
• #Gate & Trigger（ゲート／トリガー）
• #utility

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.

ADDAC System: ADDAC313 Triple Gate Pedal

2025/05/25|

• #ADDAC System
• #Modular Synthesizer
• #standalone
• #Gate & Trigger（ゲート／トリガー）
• #utility

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.

Newsletter archive from Takazudo Modular. Vol.14 covers T-Noiseworks, VC T-Networks, and the ongoing sale.

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.

Notes003: Clipping Audio Through Mixers

2024/09/05|

• #ガイド
• #Modular Synthesizer
• #Mixer（ミキサー）
• #AI Synthesis
• #ADDAC System

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

ADDAC System: ADDAC713 Stereo Discrete Mixer

2024/08/28|

• #ADDAC System
• #Modular Synthesizer
• #Mixer（ミキサー）

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.

Newsletter archive from Takazudo Modular. Vol.8 covers new ADDAC System DIY kit arrivals.

Newsletter archive from Takazudo Modular. Vol.6

Newsletter archive from Takazudo Modular. Vol.4

Newsletter archive from Takazudo Modular. Vol.3

Newsletter archive from Takazudo Modular. Vol.2

ADDAC System: ADDAC112SF Standalone Frame for VC Looper & Granular Processor

2024/05/28|

• #ADDAC System
• #Case（ケース）
• #accessory

An introduction to the ADDAC System ADDAC112SF Standalone Frame for VC Looper & Granular Processor. The ADDAC112SF is a dedicated case for the ADDAC112 VC Looper & Granular Processor. It can be charged via USB-C cable and allows the large ADDAC112 to be used as a portable standalone device.

ADDAC System: ADDAC401 Gated Envelope Follower VS2

2024/05/27|

• #ADDAC System
• #Modular Synthesizer
• #utility
• #CV（コントロール電圧）
• #Modulation（モジュレーション）

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.

ADDAC System: ADDAC304 Manual Gates

2024/05/25|

• #ADDAC System
• #Modular Synthesizer
• #Gate & Trigger（ゲート／トリガー）
• #utility

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.

ADDAC System: ADDAC305 Manual Latches

2024/05/25|

• #ADDAC System
• #Modular Synthesizer
• #Gate & Trigger（ゲート／トリガー）
• #utility

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.

ADDAC System: ADDAC216 Sum & Difference

2024/05/23|

• #ADDAC System
• #Modular Synthesizer
• #utility
• #Mixer（ミキサー）

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.

ADDAC System: ADDAC217 Quad Gate to Trigger

2024/05/21|

• #ADDAC System
• #Modular Synthesizer
• #Gate & Trigger（ゲート／トリガー）
• #utility

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.

ADDAC System: ADDAC112 VC Looper & Granular Processor

2024/05/20|

• #ADDAC System
• #Modular Synthesizer
• #looper
• #Effector（エフェクター）

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.

ADDAC System: ADDAC210 Open Heart Surgery

2024/05/19|

• #ADDAC System
• #Modular Synthesizer
• #development

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.

ADDAC System: ADDAC215 Dual S&H+

2024/04/25|

• #ADDAC System
• #Modular Synthesizer
• #Sample & Hold（サンプル＆ホールド）
• #random

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.

ADDAC System: ADDAC218 Attenuverters

2024/03/15|

• #ADDAC System
• #Modular Synthesizer
• #attenuverter
• #utility
• #CV（コントロール電圧）

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

ADDAC System: ADDAC701.REV2 VCO

2024/03/08|

• #ADDAC System
• #Modular Synthesizer
• #VCO（Voltage Controlled Oscillator）

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.

ADDAC System: ADDAC207 Intuitive Quantizer

2024/03/07|

• #ADDAC System
• #Modular Synthesizer
• #Quantizer（クオンタイザー）
• #CV（コントロール電圧）

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

ADDAC System: ADDAC203 REV.02 CV Mapping

2024/02/07|

• #ADDAC System
• #Modular Synthesizer
• #utility
• #CV（コントロール電圧）

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.

ADDAC System: ADDAC604 Dual Filter

2024/02/03|

• #ADDAC System
• #Modular Synthesizer
• #VCF（Voltage Controlled Filter）

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.

ADDAC System: ADDAC104 VC T-Networks

2024/02/01|

• #ADDAC System
• #Modular Synthesizer
• #Percussion（パーカッション）

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.

ADDAC System: ADDAC106 T-Noiseworks

2024/02/01|

• #ADDAC System
• #Modular Synthesizer
• #Percussion（パーカッション）

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.

ADDAC System: ADDAC714 Vintage Clip

2024/01/31|

• #ADDAC System
• #Modular Synthesizer
• #saturation
• #Effector（エフェクター）

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.

ADDAC System: ADDAC712 Vintage Pre

2024/01/30|

• #ADDAC System
• #Modular Synthesizer
• #utility
• #audio-io

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.

ADDAC System: ADDAC107 ACID Source

2024/01/29|

• #ADDAC System
• #Modular Synthesizer
• #synth-voice

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.