Doepfer A-105-4 Quad Poly VCF

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Doepfer A-105-4 Quad Poly VCF

Doepfer

A-105-4 Quad Poly VCF

4.5 Expert Rating

Product Info

Article Number: 463292
Brand: Doepfer
Model: A-105-4 Quad Poly VCF
Price: $246.40

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

The A-105-4 is a solid workhorse for anyone wanting that classic, warm filter sound in a modular format. It's perfect for sound designers and experimental musicians needing multiple filters for lush pads, evolving textures, or gritty soundscapes - it’s a great way to add serious filtering power without breaking the bank.

Product Description

  • Doepfer A-105-4 Quad Poly VCF
  • Eurorack Module
  • Polyphonic filter module with 4 analogue 24dB low-pass filters
  • Common controls for filter frequency; filter modulation; resonance and input level
  • All parameters controllable via CV with own attenuators
  • Per filter: audio input; FM input; audio output
  • Current consumption: 70mA (+12V) / 70mA (-12V)
  • Width: 8 HP
  • Depth: 50 mm
PROS
  • • Excellent resonance character, classic Moog-inspired tone
  • • Four filters offer immense flexibility for complex textures
  • • Common controls simplify complex modulation routing
  • • Robust Doepfer build quality, reliable Eurorack integration
CONS
  • • 8HP footprint can be restrictive in smaller racks
  • • Limited filter modes compared to some modern alternatives
  • • Can be power-hungry, especially in larger systems

Product Video

Key Features

Filter Type 24dB Low-Pass
Modes Single Resonance Peak
HP Width 8
Depth 50 mm
Power Draw 70mA (+12V) / 70mA (-12V)
CV Inputs Common Frequency, Resonance, Filter Modulation, Input Level (per filter)

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Frequently Asked Questions

It shares a similar character, but the A-105-4's resonance is a bit more controlled and less aggressive, offering a smoother sweep.
Yes, but be mindful of the power draw; 140mA total can impact a smaller supply and potentially affect other modules.
While not directly designed for cascading, careful routing of the outputs and FM inputs can achieve interesting, layered effects.

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