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Doepfer A-122 Eurorack Low Pass Filter Module

Doepfer A-122 Eurorack Low Pass Filter Module

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Doepfer A-122 Low Pass Filter

The Doepfer A-122 is an Analogue Low Pass Filter Module with a 24dB slope built around a Curtis chip.


Curtis chips were used extensively in the 1980's by countless manufacturers. Oberheim, Sequential Circuits, E-MU, Korg and PPG were just some of the name that utilized this unique sounding filter chip.


A122 seeks to emulate the sound of vintage Oberheim  filter circuits, the Curtis chip has been used here for authentic sound and stability when driven into extremes. The overall tone of the Doepfer A122 is smooth and brassy, excellent when used with multiple voices or softer audio signals.


A122 like most of the other A120 range features a decent array of potentiometers and corresponding CV controls. A122 also self oscillates when pushed into extreme resonance, so it can be used as an extra sound source if desired.


The main features of the Doepfer A-122 Low Pass Filter Module include


Curtis chip based 24dB low pass filter


Pure analogue circuit path


8HP wide


Requires 20mA

Short Description

The Doepfer A-122 is an Analogue Low Pass Filter Module with a 24dB slope built around a Curtis chip.

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Manufacturer Doepfer
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