DoepferA-106-1 X-Treme Filter

Doepfer A-106-1

Module A-106 began life as an MS20 filter clone. However, things quickly deviated into something much more diversified. Where the original features a 12dB low-pass and 6dB high-pass connected in series, A-106-1 mobilizes the same circuit to achieve simultaneous low-pass and high-pass filtering of two separate audio signals. The inputs are normalized, meaning a single signal patched into the low-pass can be affected via high-pass controls as long as nothing is patched into the HP input. Making things even more interesting is the fact that the HP input is polarized, enabling notch and bandpass filtering capabilities.

A-106-1 Features

• MS-20 filter clone with some added flavor
• Two CV frequency inputs
• LP and HP inputs, with the ability to achieve notch and bandpass filtering
• Non-linear control scale