MicMix XL-121 Master Room Reverberation System Reverb Rack Module is a used item in good condition, listed on Reverb. The asking price is £314. It is offered by Sonicatomics through Reverb. It is in our Outboard Effects category. Used Gear Hunter first saw this listing on 24 October 2026 and last saw it on 25 October 2026. It has been seen 3 times in our scans. Prices are converted from the seller's currency when we scan the listing, so the amount you pay may differ slightly. The seller sets shipping, and import duty or VAT may apply, so check the final cost and the item's details on Reverb before buying.

From the seller

MicMix Master-Room XL-121, a vintage single-channel rackmount spring reverb made in Dallas, Texas. It’s in good working condition and shows honest cosmetic wear from years of use, including rack rash, scuffs and scratches on the chassis, and some wear to the faceplate. None of it affects the sound or operation. One knob looks like a replacement and the power button appears to be missing. The Master-Room units were studio and broadcast staples in the late ’70s and early ’80s, and they’re known for a smoother, denser sound than the typical spring tank, with less of the boing and flutter on transients. The XL-121 sounds great on vocals, guitars, snare, and synths, and it has a dark, warm character that sits in a mix in a way digital reverbs don’t. Features: Single-channel (mono) spring reverb Front-panel EQ for shaping the reverb tone Dry/reverb mix control for use inline or on a send 1U rackmount chassis It has been tested and passes audio cleanly, with a full, even reverb. As with any spring unit of this age, expect a little noise floor, and expect the springs to react if the chassis gets bumped. Includes the XL-121 only. It will be packed carefully, with the unit well padded to protect the spring tank, and shipped promptly. Feel free to message me with any questions.

MicMix XL-121 Master Room Reverberation System Reverb Rack Module

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