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Doepfer A-104

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Doepfer A-104

Doepfer

A-104

4.5 Expert Rating

Product Info

Article Number: 114712
Brand: Doepfer
Model: A-104
Category: Filter Modules
Price: $152.90

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

The Doepfer A-104 is a real character piece – it nails that classic, almost alien formant filter sound you hear in vintage electronic music. It's perfect for experimental sound design, ambient textures, and anyone wanting a distinct, vintage vibe in their modular system. It’s a solid foundation for a unique sonic palette.

Product Description

Doepfer A-104, Quad Resonance Filter, Trautonium formant filter, Width: 20 TE / 20 HP / 101.2 mm, Depth: 45 mm (measured from the rear of the front panel), Electricity demand / Current: 30 mA (12 V) / -10 mA (-12 V)

PROS
  • • Exceptional resonance character, reminiscent of early Trautonium filters
  • • Robust, thick-panel construction typical of Doepfer quality
  • • Four independent filter sections offer immense sonic flexibility
  • • Versatile for both subtle warmth and aggressive, screaming textures
CONS
  • • Limited modulation options compared to modern filter designs
  • • Power consumption can be a factor in larger modular systems
  • • Somewhat unforgiving with extreme parameter settings; requires careful tweaking

Product Video

Key Features

Filter Type Quad Resonance Formant Filter (Trautonium Inspired)
Modes Low-Pass, Band-Pass, High-Pass, Notch
HP Width 20 HP
Depth 45 mm
Power Draw 30 mA (+12V) / -10 mA (-12V)
CV Inputs One CV input per filter section for frequency modulation

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Frequently Asked Questions

It's significantly more pronounced and 'swirling' than the A-102, leaning into that formant character. It's designed for more extreme resonance than their more standard filters.
Absolutely, but its real strength lies in utilizing the resonant peaks and formant characteristics. While usable as a basic low-pass, you're missing out on its unique character.
It's a consideration, especially if you're running a power-constrained system. Plan your power budget accordingly, particularly if you’re using multiple modules with similar current demands.

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