The TC Electronic M-One XL is a 24-bit dual engine effects processor in a 19-inch 1U rackmount format. It is known for its high-quality reverbs and delays, making it a great choice for live sound reinforcement or studio recording. Use it on vocals, keyboards, guitars, or as an auxiliary effect on a mixer.

- Two independent effect engines that can be used simultaneously
- Effects include reverb, delay, chorus, flanger, phaser, compressor, gate, EQ, pitch shift, and tremolo
- Serial and parallel routing options for flexible signal flow
- Tap tempo for delay and modulation effects
- Stereo inputs and outputs
- Full MIDI connectivity: in, out, and thru

The unit is in good working condition and operates as expected.