Roland audio interface, the EDIROL UA-25EX. I purchased this over a decade ago and only used it a few times. I tried it out a few months ago and it seemed to function normally, but I cannot guarantee its operation, so I'm selling it as-is, no returns or refunds. As you can see in the photos, the knobs have discolored to white. Overall, there are no noticeable scratches or stains. - Brand: EDIROL - Model: UA-25EX - Connectivity: USB - Sampling Rate: 24bit 96kHz - Input Terminals: XLR/TRS combo jacks (2ch) - Output Terminals: RCA jacks (2ch) - Digital Output: S/PDIF - Headphone Output: 1/4 inch jack - Volume Control: Output volume adjustment knob - Phantom Power: ON/OFF switch Thank you for looking.