Comb filter based upon a BBD (bucket brigade device) analogue delay line
https://www.analoguesystems.co.uk/index.php/as-modules/rs120This offer was fetched from reverb.com. You cannot contact the seller via ModularGrid. You have to visit their site.
Look up onWORKING CONDITION: Excellent. This module tests perfectly within an existing Eurorack system.PHYSICAL CONDITION: Excellent. All metalwork, knobs, power pins, and iO jacks are in excellent physical condition. INVENTORY #58462 BRAND: Analogue Systems MODEL: RS-120 Comb Filter FUNCTION: Eurorack Synthesizer Module PRODUCT DESCRIPTION: This listing is for an Analogue Systems RS-120 Comb Filter Eurorack Synthesizer Module. The Analogue Systems RS-120 Comb Filter is a 12HP Eurorack module based on a bucket-brigade device (BBD) analog delay line, specifically designed for creating intense phaser and flanger effects. It offers short delay times (2.5ms to 25ms), variable resonance/feedback, and dual CV inputs for modulation, operating well for audio or control voltage. SPECS: The RS-120 uses very short delay times to alter the phase of the signal, resulting in its characteristic "comb-like" frequency response. Module Size: 12HP width and 64mm depth. Delay Time: Manually adjustable from 2.5ms to 25ms. Frequency Response: Approximately 30Hz to 5kHz at the output. Resonance (Feedback): Variable feedback control that can reach self-oscillation at higher settings. Inputs: Features two audio inputs (SIG 1 and SIG 2) with individual level controls that can overdrive the filter past the "4" position. CV Control: Two CV inputs for delay time; one is fixed at 1V/octave, and the other is variable. ACCESSORIES INCLUDED: 16 Pin Eurorack Power Cable (4) Eurorack Screws & Washers UNPACKAGED WEIGHT: 1 lbs. UNPACKAGED DIMENSIONS: 5" x 3" x 3"

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