DoepferA-105-4 Quad Poly SSI VCF Filter

Doepfer A-105-4

The A-105-4 from Doepfer offers four 24 dB/oct low-pass filters in a compact module optimized for polyphonic modular patching. The module's unified CV inputs for cutoff frequency, resonance, and level (with four built-in VCAs) make great-sounding four-voice polyphony within Eurorack easier to achieve than ever before.

A-105-4 Features

• Quad SSI2144-based analog filter
• One audio input and output per filter
• FM input with attenuator for each filter
• Consolidated Frequency, Q, and Level controls with CV input
• CV input attenuators for each parameter