Excellent working condition. Great for many applications including synth mixer.

The Alesis Studio 12R is a 12-channel, 3U rack-mountable analog mixer designed for home studios, live sound, and keyboard sub-mixing. It offers a simple, ultra-quiet signal path and is praised for its quality microphone preamps and physical faders instead of rotary knobs.

Core Features

• Channels: 12 total inputs (8 hybrid XLR/1/4" mic/line channels and 2 stereo line-only channels on 9-12).
• Preamps & Phantom Power: Features 8 high-quality, discrete mic preamps with globally switchable (+48V) phantom power.
• EQ: 2-band shelving EQ (highs at 12 kHz, lows at 80 Hz) on every channel.
• Aux Sends: 2 aux sends per channel (1 pre-fader, 1 post-fader) for monitor mixes and effects processing.
• Channel Inserts: Individual insert points on the first 8 channels, allowing you to use external processors (compressors, EQs) or record up to 8 tracks while simultaneously outputting a stereo mix.
• Faders & Metering: 60mm linear faders on each channel and 10-segment LED stereo meters.
• Connectivity: Tape I/O on RCA connectors, separate \(1/4"\) balanced main and monitor outputs, and a convenient front-panel headphone jack.

The Studio 12R is highly regarded for its compact footprint and exceptionally clean signal path for an analog mixer in its class.