VCA
VCAs are another critical component of a Eurorack system. If you haven’t already, you’re going to hear people say, “You can never have enough VCAs”. So why is that?
If you’ve used a fixed architecture synthesizer, you might be familiar with VCAs already. It stands for Voltage Controlled Amplifier, meaning they use a voltage signal to control the amplitude, or volume, of another signal. The most common way that they’re used, and the way that you see them implemented in fixed architecture synthesizers, is to control the volume of the final sound produced by a synthesizer using an envelope as the control voltage. You strike a key and the ADSR envelope of the VCA determines if that note will swell in slowly or hit abruptly, and if it will end as soon as you release the note, or ring out afterwards.
While this is still a common way to use them, in a Eurorack scenario VCAs can be employed in a number of different ways. It’s important to stress that a VCA is using one signal to control the amplitude of another signal, and that doesn’t mean that it always has to be a CV signal doing the controlling, or that it has to be an audio signal being controlled.
VCAs are helpful to shape modulation signals with envelopes. This can let you ease in an LFO to modulate pitch or filter cutoff with a slow attack. Or if you used a slow LFO to modulate an envelope, you could make your envelopes get slowly bigger and smaller. By using gates to open and close a VCA, you can mute and unmute CV signals to toggle their effect on and off.
Amplitude modulation is a technique where audio rate signals are used to control the amplitude of another signal. For example, by fluctuating the amplitude of a sine wave faster than the frequency of the sine wave, the wave shape begins to change and new harmonics are introduced.
Roland System-500 530 DUAL VCARoland System-500 530 DUAL VCA
The 530 Dual VCA (voltage controlled Amplifier) features two independent voltage controlled amplifiers for controlling the loudness of audio signals. Each VCA has three sliders for an audio input…€ 379,00 € 349,00
IO Instruments - SINOPE (VCA)IO Instruments - SINOPE (VCA)
Two channel VCA with discrete core
Extra VCA for linear and exponential CV
Low noise, low feedthrough, low clicking
Very low distortion and gain of 2
Sweet and detailed sound, huge headroom
Wide…€ 159,00 € 149,00
Make Noise DynamixMake Noise - Dynamix
DynaMix is a fast two-channel Low Pass Gate, dynamics manager and mixer, the core of which is derived from our 0-COAST synthesizer. The LEVEL parameter provides simultaneous voltage control over the Amplitude…€ 249,00 € 189,00
Doepfer A-130 Voltage Controlled Amplifier(In Doepfer Bag, no box)
Modules A-130 and A-131 provide voltage-controlled amplification. For audio signals, you would normally use the exponential VCA (A-131), and for control voltages, the linear VCA (A-130). It doesn't always…€ 85,00 € 59,00
Doepfer A-131 Voltage Controlled AmplifierModules A-130 and A-131 provide voltage-controlled amplification. For audio signals, you would normally use the exponential VCA (A-131), and for control voltages, the linear VCA (A-130). It doesn't always have to be that way,…
€ 80,00 € 75,00
Doepfer A-132-1 Dual Voltage Controlled Amplifiernew: from June 2013 the module is equipped with high-end VCAs
Module A-132-1 (Dual Low Cost VCA) contains two voltage controlled amplifiers, with a linear response most suited to regulating the level of control voltages (ADSR…€ 70,00
Doepfer A-132-3 Dual linear/exponential VCAModule A-132-3 is composed of two identical voltage controlled amplifiers (VCA). Each VCA has a manual gain control and a control voltage input with attenuator. The character of the control scale can be switched to linear or…
€ 110,00 € 105,00
Doepfer A-135-1 Voltage Controlled Mixer / Quad VCAModule A-135-1 is a quad voltage controlled mixer. It is made of 4 independent linear VCA's. The VCA outputs are mixed to a common output. For each VCA the following inputs and controls are available: audio input with attenuator,…
€ 180,00 € 148,00
Make Noise modDemixMake Noise modDemix
New version of the modDemix.(July 2014)
Differerences from the original:
"The modDemix will return to stock with subtle changes that make the module more intuitive and more useful. The faceplate graphics…€ 159,00 € 149,00
4ms VCA Matrix (VCAM)4ms VCA Matrix (VCAM)
The VCA Matrix from 4ms is a playable 4x4 matrix of 16 VCAs.
Four CV or audio inputs can be routed in any amount/combination to four outputs, using the 16 CV control jacks, Level knobs, and Mute…€ 375,00
WMD - Digital VCAWMD Digital VCA
The Multimode Envelope uses an analog integrator core with digital control over positive and negative slopes. This allows for total control over the envelope shape and logic operation. Since the core is analog,…€ 268,00 € 219,00
WMD/SSF AmplitudeWMD/SSF Amplitude
AMPLITUDE is a discrete transistor core VCA with a wide range of waveform saturation and distortion capability.
This module is capable of faithfully reproducing the classic warmth and fat tones associated with…€ 149,00 € 129,00
Doepfer A-135-4A/B VC Performance Mixer (2 modules)Doepfer A-135-4A/B VC Performance Mixer
Series A-135-4 contains several modules which are used to built a voltage controlled performance mixer. The modules of the A-135-4 series can be combined with the (non voltage controlled)…€ 430,00 € 395,00
Vermona Modular twinVCAmpVermona Modular twinVCAmp
The Vermona twinVCAmp is a highly versatile dual VCA/2-in-1mixer, that not only offers different response curves for both VCAs - compared to most of the available VCA modules today it also offers real…€ 388,00 € 339,00
Doepfer A-132-8 Octal VCADoepfer A-132-8 Octal VCA
A-132-8 is an octal VCA and primarily planned for polyphonic applications. The module contains four VCA pairs. Each pair includes two daisy-chained VCAs. One VCA has a linear control scale, for the…€ 180,00 € 159,00
2hp - VCA Black2hp - VCA Black
The 2hp VCA is a dual, linear VCA. It uses the renowned 2164 SSM architecture, giving it extremely low distortion and high quality audio outputs. With a CV input attenuator, and DC-coupled inputs this is your new…€ 119,00 € 109,00
Doepfer A-142-2 Dual Envelope Controlled VCADoepfer A-142-2 Dual Envelope Controlled VCA
Module A-142-2 contains two envelope controlled VCAs behind a front panel with 8 HP only. Each of the two sub-units is the combination of a simple AD/ADSR/AR envelope generator and a…€ 165,00 € 149,00
Tiptop Audio VCATiptop Audio VCA
A Tiptop Audio VCA has arrived! Tiptop Audio is on a path to a complete system and no Eurorack rig is complete without a dedicated VCA. The Tiptop Audio VCA is a single channel, variable slope, voltage controlled…€ 115,00
Doepfer A-135-2 Mini Quad VCA/MixerDoepfer A-135-2 Mini Quad VCA/Mixer
Module A-135-2 is a miniature version of the A-135-1. It consists of four linear VCAs with mixing function.
The input level is adjusted with the attenuator. The volume control of each input…€ 155,00 € 129,00
Noise Engineering - Seca Ruina (SR) Black versionNoise Engineering - Seca Ruina (SR) Black version
Distortion is fun, but it’s even better when you split it up across the frequency spectrum. Seca Ruina takes an input, splits it up into three frequency bands, and lets you…€ 219,00 € 199,00
Cosmotronic - Delta-V mk2Cosmotronic - Delta-V mk2 - Function Generator
Dual Amped Envelope Generator
Delta-V is a fully analog dual channel function generator with a dedicated VCA
and cycle switch per channel.it’s a versatile and powerful tool that…€ 225,00
Noise Engineering - Quantus Ampla (QA) blackNoise Engineering - Quantus Ampla (QA) black
Four channels of linear DC-coupled goodness in 6hp for all your VCA needs: ducking, mixing, CV-controlled leveling, and more!
Quantus Ampla is a compact four-channel VCA. But it’s…€ 237,00 € 229,00
Bastl Intruments - Aikido (quad vca)BASTL INTRUMENTS - AIKIDO (QUAD VCA)Quad VCA mixer with submix routing & two styles of integrated envelope followersAikido is a performative quad VCA mixer with flexible submix routing and two styles of integrated envelope…
€ 289,00 € 269,00
