

The Tiptop Audio VCA is a full featured, precision calibrated, analog Voltage Controlled Amplifier. At its heart is a novel design of a control circuitry—a function that lets you sweep continuously through three different response curves: Logarithmic, Linear, Exponential—giving you all three shapes in a single module. This special control circuitry design by Mr. Osamu Hoshuyama was adopted into the VCA module to make it a great sounding synthesizer VCA with flexibility to address all duties: level control for both audio and CV modulation, gating audio into silence, and amplitude modulation effects.
A VCA, Voltage Controlled Amplifier, sometimes referred to as an audio gate, is an essential module to any Eurorack and no system is complete without one. The concept is an input, an output and a control that sets how much of the input signal passes through to the output.
A great VCA means minimum feedthrough of the control signal bleeding into the passing signal and minimum distortion applied to the passing signal. An excellent audio gate means minimal leakage of signal from IN to OUT when the control tells the VCA to fully close. These are the most critical conditions for a good sounding, good responding VCA and are what the Tiptop Audio design carefully addresses. 2 LED peak indicator lights on the front panel light up with incoming CV or audio signals. While a clipping indicator for audio is expected, clipping of CV is often overlooked and it’s included here to visually maintain the full dynamic range of an envelope driving the VCA.
The Tiptop Audio VCA lets you concentrate on creative uses rather than figuring out the module’s anomalies. The result is an excellent sounding synthesizer VCA that’s a joy to use and pleasing to hear.
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‘Tangle Quartet’ is a high quality quad linear voltage controlled amplifier (VCA) providing individual level control of 4 signal inputs with both individual outputs and a combined ‘mix’ output (for non patched outputs) .
The Erica Synths Black 3109 VCF/VCA is a lowpass filter and voltage-controlled amplifier combo built around the AS3109 VCF integrated circuit, a contemporary version of the IR3109 chip, found on vintage Roland synths such as the Jupiter series, Juno series and the SH-101.
Snappy, classically analog envelopes with visually intuitive controls. Add a powerful, cv controllable cyclical gate generator, integrated VCA, and trigger buttons —then double it—now you've got Tangrams.
The Dual Stereo Gate (DXG) music synthesizer module is a Dual Stereo Low Pass Gate and Mixer. It follows in the footsteps of the QMMG, Optomix, RxMx, DynaMix, and LxD. Unlike its predecessors, the DXG is specifically oriented around mixing stereo signals, making it an important addition to any system containing modules like XPO, QPAS, Morphagene, Mimeophon, and other stereo modules by Make Noise or others.
Erica Synths Black LPG is our take on Lowpass Gate idea – it’s designed from scratch featuring 2nd order lowpass VCF (the original Buchla lowpass gate was 1st order VCF) and VCA combo with distinct resonance circuit on top.
Javelin ist ein Modul, das im Grunde eine ADSR-Hüllkurve mit integrierten VCA darstellt. Es verfügt jedoch über einige Features, die das Modul zu einem expressiven Klangformungswerkzeug machen.
The ‘MEGA-TANG’ is a 4-channel linear VCA and stereo mixer providing per input control over level, effect send, pan and muting. Designed for live use in mind with a simple & compact layout, the ‘MEGA-TANG’ builds on the clean and transparent sounding Tangle Quartet VCA by adding a stereo mix output, effect sends (mono send with a stereo return) which pair great with the MFX, manual panning, soft mute buttons with LED indicators and an expansion port for future expandability.
A-132-8 ist ein achtfacher VCA und in erster Linie für polyphone Anwendungen gedacht.
Erica Synths Black Quad VCA, despite its compact size, is designed in line with the Black Series Hi-Fi philosophy, our custom pre-emphasis – de-emphasis circuits preserve all the nuances of the original signal.
Der Quad VCA besteht aus vier analogen Verstärkerschaltungen, ihre Kennlinie kann zwischen linearer und exponentieller Charakteristik überblendet werden.