Behringer 904B Voltage Controlled High Pass Filter
An 8 HP Eurorack high-pass VCF module with -24dB/octave slope and three CV inputs
Overview
The Behringer 904B is a voltage controlled high-pass filter module for Eurorack systems. It is described as an authentic reproduction of the circuitry from the Moog Modular system, with a vintage-sounding analog high-pass filter. The slope is 24 dB/octave. A range switch gives two selectable frequency ranges, and the cutoff can be set fully by hand. Three CV inputs let you modulate the cutoff.
Specifications
| Product type | Eurorack module |
| Filter type | analog -24dB/Oct. highpass filter |
| Control | Frequency control and range switch allows full manual control of cutoff frequency |
| Control | Range switch sets the frequency range in two selectable ranges |
| CV Inputs | 3 CV inputs for control of frequency |
| Eurorack specs | 8 HP |
| Power | 55 mA +12 V, 55 mA -12 V |
Design
The Behringer 904B is a point-to-point reproduction of the original Moog Modular circuitry, scaled for Eurorack.
Context
The 904B is part of the Behringer System 55 modular line. It is designed to work with other Behringer Eurorack modules such as the 902 VCA, 911 Envelope Generator, and CP3A-M Mixer.
Market
The module has been available new from 2020 to the present, with a retail price of $29.00. Amazon Germany lists it at €26.20 new, and you can buy up to four units at once there.
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