Doepfer A-120 Vintage Edition

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Doepfer A-120 Vintage Edition

Doepfer

A-120 Vintage Edition

4.9 Expert Rating

Product Info

Article Number: 383620
Brand: Doepfer
Model: A-120 Vintage Edition
Price: $126.50

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

This A-120 VCF1 is a solid choice for anyone wanting that classic Moog-style filter in their modular setup. It’s a straightforward, workhorse filter that nails the vintage vibe, and it’s a great starting point for exploring filter modulation – ideal for experimental sound design or recreating classic synth tones.

Product Description

Doepfer A-120 Vintage Edition, 24 dB Low Pass 1 (VCF1)

Module A-120 is a voltage-controlled 24 dB low-pass filter, which filters out the high frequency components from a sound spectrum while allowing the low frequencies to pass unhindered. The cut-off frequency (corner frequency) determines the point at which this effect occurs. They can be set or modulated both manually and via control voltages (filter modulation, with an LFO for example).

  • The VCF1 is configured as a "transistor cascade" with an edge slope of -24 dB / octave
  • which is also used in various Moog synthesisers
  • This results in the typical
  • "legendary" Moog sound. The resonance (emphasis) can be adjusted at the VCF 1 up to self-oscillation. In this case
  • the filter operates as a sinusoidal oscillator.
  • Vintage edition with black front panel
  • Voltage-controlled 24 dB low-pass filter
  • Black front panel
  • Width: 8TE / 40.3 mm
  • Depth: 65 mm (measured from the back of the front panel)
  • Power requirements: 30mA (12V) / -20mA (-12V)
PROS
  • • Classic Moog filter emulation delivers a warm, resonant character.
  • • Robust construction with discrete transistors for reliable performance.
  • • Vintage edition offers a distinct sonic signature compared to later models.
  • • Compact size integrates easily into dense modular systems.
CONS
  • • Limited filter modes compared to more modern designs.
  • • Vintage components may exhibit slight inconsistencies in performance.
  • • The 'vintage' designation can imply slightly higher noise floor.

Product Video

Key Features

Filter Type 24dB Low-Pass
Modes Single Mode
HP Width N/A
Depth 1U
Power Draw +12V: 10mA, -12V: 2mA
CV Inputs Cutoff Frequency

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Frequently Asked Questions

The Vintage Edition uses discrete transistors, resulting in a slightly warmer, more organic tone and potentially a bit more noise than later revisions with integrated circuits.
Yes, it self-oscillates. Increasing the resonance control will progressively lead to self-oscillation, but it’s fairly easy to reach that point.
LFOs, envelope generators, or any voltage source that provides a smooth, predictable signal work well, allowing for classic filter sweeps and dynamic textures.

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