€65

Rarely used.

The Presonus Firestudio Mobile is a deceptive little beast. At first sight, it appears to be yet another dinky little 24‑bit/96kHz stereo I/O interface with mic/instrument options, but once you look on the rear panel you find another six line inputs.

There's also a separate stereo headphone output alongside the main stereo outs, and when you include the coaxial S/PDIF I/O, this brings the total to 10 inputs and six outputs.