Quad VCA + Ring Modulator ( Internal wavefolder and -1 octave ciruit)

RASENPU is a 16HP Quad DC-Coupled VCA designed to be more than just a volume control module. Combining four VCAs, two Ring Modulators, Wavefolding, Sub-Octave generation, and intelligent internal normalization, it serves as a compact sound design hub for both audio and CV processing.

Channels 1 and 2 feature Ring Mod VCAs with a unique Blend control, allowing you to continuously mix the original carrier signal back into the ring-modulated output. Blend is fully CV controllable, making it easy to create dynamic, evolving timbres.

Channels 3 and 4 are switchable between Linear and Exponential response, making them suitable for both audio and CV applications.

One of RASENPU's unique features is its internal signal routing. By simply patching a signal into VCA1 INPUT, the module automatically generates four related signals:

CH1: Original signal
CH2: Wavefolded Ring Mod
CH3: Wavefolded -1 Octave
CH4: -1 Octave

This allows complex layered patches with minimal patch cables.

All outputs are DC-coupled, making RASENPU equally useful for audio, envelopes, LFOs, CV mixing, and voltage offset generation. A dedicated MIX OUT sums all four channels for convenient signal routing.

Whether you need a Quad VCA, Ring Modulator, CV utility, or creative sound processor, RASENPU is designed to become the center of your Eurorack system.

Features
16HP Eurorack module
4 × DC-Coupled VCAs
CH1 & CH2 Ring Mod VCAs with Blend control
CV control for Blend
CH3 & CH4 Linear / Exponential switch
Internal Wavefolder routing
Dual -1 Octave generators
Automatic normalized routing
DC-coupled audio & CV processing
Individual outputs + MIX OUT
Dual-color signal/peak LEDs
Power
+12V: 130mA
-12V: 90mA
+5V: 40mA (Required)

Japanese website:
https://lleqpue9.hateblo.jp/entry/quad-vca%2Bring-mod

https://lleqpue9-hateblo-jp.translate.goog/entry/quad-vca%2Bring-mod?_x_tr_sl=ja&_x_tr_tl=en&_x_tr_hl=ja&_x_tr_pto=wapp