Doepfer A-123-2

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Doepfer A-123-2

Doepfer

A-123-2

4.8 Expert Rating

Product Info

Article Number: 452516
Brand: Doepfer
Model: A-123-2
Price: $126.50

* Prices may vary. Check retailer for current pricing and availability.

The A-123-2 is a solid, no-frills high-pass filter that’s perfect for anyone building a foundational Eurorack system or wanting a classic, clean sound. It’s a workhorse module for subtle subtractive sculpting and creating evolving textures, especially appealing to those who appreciate the vintage Doepfer character.

Product Description

  • Doepfer A-123-2
  • Eurorack Module
  • Voltage-controlled high-pass filter
  • 4 Separate filter outputs with different slopes: -6
  • -24 (dB / oct.)
  • Resonance voltage controllable
  • Level control for input signal
  • Power requirement: 30 mA (+12 V) / 30 mA (-12 V)
  • Width: 8 TE
  • Depth: 45 mm
PROS
  • • Excellent filter slope options for nuanced sound shaping
  • • Classic Doepfer build quality - robust and reliable
  • • Resonance control provides a distinct, usable character
  • • Four outputs offer creative routing and parallel filtering
CONS
  • • Limited input gain range can be restrictive with hot signals
  • • 8 TE width might be a constraint in smaller modular systems
  • • Somewhat basic feature set compared to more modern filter designs

Product Video

Key Features

Filter Type Voltage-controlled High-Pass
Modes Four selectable slopes (-6, -12, -18, -24 dB/oct)
HP Width 8 TE
Depth 45 mm
Power Draw 30 mA (+12V) / 30 mA (-12V)
CV Inputs One CV input for resonance control

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Frequently Asked Questions

The resonance is more subtle and musical than aggressive, lending itself to smoother, evolving sounds rather than extreme self-oscillation.
They are; however, careful gain staging is necessary to avoid signal overload or unwanted interactions when using multiple outputs simultaneously.
Absolutely! It’s a relatively simple and affordable module that demonstrates fundamental filter principles effectively.

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