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HomeShopStudio & ProductionEurorack ModulesEurorack Filter ModulesDoepfer A-103 18dB Low Pass Filter
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Doepfer A-103 18dB Low Pass Filter

  1. Authentic recreation of classic 303-style filter in modular format for Eurorack synthesizers.
  2. Three CV inputs, including CV1 utilizing 1V/Oct standard, allowing you to patch pitch signals in and use the A-103 as its own dedicated sine wave generator.
  3. Smooth frequency cut-off that subtly rounds out the low-end of your signal to maintain punch even under extreme resonance, making it ideal for live performers.
  4. Reshape your sound with a wide frequency sweep and sweepable resonance dial, allowing you to transform virtually any signal and drive it into self-oscillation to add texture and grit to your tone.
  5. Perfect for recreating the classic sound of mid to late ’80s Acid House, with a touch of added harmonics that help give your sound the definitive cut to be heard above a dense mix of drums, pads, and other instruments.
Category: Eurorack Filter Modules
Doepfer
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The Doepfer A-103 is a compact 8HP module for Eurorack synthesizers that recreates the classic 303-style low pass filter. With its transistor-ladder-style design, it offers the signature sound of Acid House, with its smooth frequency cut-off, subtle crunch, and harmonics.

Ideal for Acid House

The A-103 is the perfect tool for producing the sound of Acid House, with its smooth and seamless frequency cut-off that rounds out the low-end of the signal to maintain the signature punch, even under high resonance. With three CV inputs, including 1V/Oct standard on CV1, you can even use the A-103 as its own dedicated sine wave generator by driving the resonance to its maximum self-oscillation.

Transform your Sound

A low-pass filter is a crucial component of Eurorack synth design, and the A-103 offers a wide frequency sweep and complete control over your filtering. With its sweepable resonance dial, you can drive your signal into self-oscillation to add texture and grit to your tone. Whether you want to beef up kick drums, tame harsh leads, or create euphoric build-ups, the A-103 is a versatile tool for shaping your sound.

Smooth and Seamless

The frequency cut-off of the A-103 is smooth and seamless, with no jumps between values and no dead spots. By boosting the resonance, you’ll add harmonics that give your sound the definitive cut to be heard above a dense mix of instruments.

Specifications

  • Width: 8HP
  • Depth: 55 mm
  • Current: +30mA (+12V), -10mA (-12V)
  • Product code: A-103

In conclusion, the Doepfer A-103 18dB Low Pass Filter is a compact and powerful tool for recreating the classic sound of Acid House, and a versatile tool for transforming your sound in Eurorack synthesizers.

Product Name

Doepfer A-103 18dB Low Pass Filter

Product Code

A-103

Module Width

8HP

Module Depth

55mm

Input Voltage

+/- 12V

Current Draw

+30mA (+12V) / -10mA (-12V)

Filter Type

Transistor-Ladder Style Filter

Filter Slope

18 dB/octave

Control Inputs

Three CV inputs

CV1 Standard

1V/Oct

Resonance Control

Sweepable resonance dial

Resonance Feature

Can drive signal into self-oscillation

Low-Pass Frequency

Smooth and seamless with no jumps between values or spots

Sound Character

Suitable for Acid House with a crunchy and booming sound

Sound Shaping

Offers tonal shaping options from subtle to resonant

Uses

Can be used to beef up kick drums, leads or as a creative tool for build-ups

Brand

Doepfer

Doepfer

Reviews

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