Description

Doepfer A-110-04QZVCO Quadrature Thru Zero VCO, $139!

A sine/cosine-core analog VCO with thru-zero FM and quadrature outputs, designed for advanced modulation and precision wave generation.

Type
Eurorack Voltage-Controlled Oscillator

Model
A-110-4 QZVCO

Manufacturer
Doepfer

Country of Manufacture
Germany

Year of Introduction
2015

Controls
XTune, XFM (Exponential FM Attenuator), LFrq (Linear Frequency), LFM (Linear FM Attenuator)

Input
1× 1V/Oct CV input
1× Exponential FM input
1× Linear FM input

Output
1× Sine output
1× Cosine output

Power Supply
+12V: 90mA, -12V: 30mA

Notable Features

  • Thru-Zero Linear FM: Enables complex timbral modulation across zero frequency

  • Quadrature Outputs: Simultaneous sine and cosine signals with 90° phase difference

  • Sine/Cosine Core: Pure analog wave generation

  • Dual Modulation Paths: Independent exponential and linear FM control

  • LED Polarity Indicator: Red for positive CV, yellow for negative

  • Use Case: Ideal for FM synthesis, phase modulation, and applications requiring accurate quadrature signals