Check the listing for details. Ring Modulator with VCA from Circuit Slices: NEW. Condition: New. Listed at 60.00 USD. The Circuit Slices Ring+VCA (CS045) is a dual-function module for Eurorack-compatible synthesizers. Packed in a narrow panel is both a quality classic analog ring modulator circuit and a basic linear VCA. Ring modulators typically patch their output to a VCA – this ring modulator includes the VCA. This is a brand new module and a new product from Circuit Slices; released before even listed in their catalog. Features and Specifications for the CS045 Ring+VCA The “Ring Modulator” or “Balanced Modulator” or “4-Quadrant Multiplier, circuit uses a quality Analog Devices AD633 chip · Low feedthrough (+/-0.1% Yin and +/- 0.3% Xin typical) · Low noise (90 µV rms) · No ‘Nulling’ adjustments are required · See Analog Devices AD633 data sheet for complete chip specifications The VCA, or “two quadrant multiplier” circuit uses a transconductance chip The VCA is trimmer-adjusted for unity-gain output with a 5V CV input The ring modulator output is “normal” patched to the VCA input The VCA and Ring Modulator can be used separately – patching to VCA IN disconnects Ring OUT Includes power cable and case screws Reverse power protection Low Power: +12 VDC @ 13 mA, -12 DC @ 13 mA, using a standard Eurorack 10-pin power connection Connections: Standard 3.5mm jacks Depth: 32 mm Narrow panel width: 4 HP Create sounds with complex timbers (often with non-harmonic overtones) produced from the sum and difference frequencies applied to the X and Y inputs of the ring modulator. Use the built-in VCA to give bell-like sounds a decay. This affordable little module will greatly expand the capabilities of any modular synthesizer rack. We know you will enjoy hours of experimenting, producing wild modulation sounds and dramatic “clangorous” effects!