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This discrete 10HP VCA circuit from ACL is unlike any common or classical design, using an entirely different principle.
This VCA circuit enables excellent technical properties such as;
- Very low harmonic distortion in the whole linear gain range
- No crossover-distortion due to class-A operating mode
- No overshooting and ringing due to no use of global feedback for operating point stabilisation and linearisation, only local feedback used
- Low CV-feedtrough due to a very good common-mode rejection
- High „offness“, so no audio-feedtrough from the input to the output
- High dynamic range, not completely used, to provide some headroom
- High bandwidth, completely DC-coupled signal path.
Besides the two individual audio outputs from each VCA, there is also a mix of the output signals of VCA 1 and VCA 2 and of the signal coming from the Aux-input. The Aux-Input adds an external audio signal to the Sum at unity gain. For each VCA there is a manual control knob for the gain as well as a Control-CV input. The Audio and the Control-CV input of VCA 2 is normalled (normalised) to the corresponding input of VCA 1, so if no cable is inserted in CV or/and audio input of VCA2, the CV and/or audio signals at the CV and/or audio input of VCA 1 will be copied to VCA 2. It becomes very easy to create functions like VC Crossfader and VC Stereo-Panorama, VC FX send, VC Mixer or you can just use both VCA´s individually.
Product Specs
- Item Number: 12411
- Make: ACL
- Model: VC Dual Amp
- Condition: Brand New
- Finish: Grey
- Categories: keyboards-and-synths ⇒ eurorack
- Function: Mixer VCA
- Made In: Germany
- MPN: ACLVCDA
- Modular Grid: Eurorack ⓘ ＋
- Dimensions: 10 HP 22 mm deep
- Power: 34 mA +12V 29 mA -12V ? mA 5V