12-input, 12-output audio interface with 48V phantom power. The front four audio inputs are not usable. It's 8-in/8-out on the rear and 10-in/10-out via two digital connections. It also has ADAT optical. Those who record with microphones will need a microphone preamp. The sound is excellent, and I used it up to Win10. The dedicated XLR main outputs are a nice touch, and the interface has a professional feel throughout. I switched to MOTU due to FireWire support and the times. It still has usable features like DSP effects directly from System 6000. Driver support has ended. I don't know about Mac, and it's not compatible with Win11. No claims, no returns. - Brand: t.c. electronic - Model: studioconnekt48 - Inputs: 12 - Outputs: 12 - Master Volume Control: Yes - 48V Phantom Power: Yes - Headphone Outputs: 2 - Connectors: XLR/TRS No claims, no returns. Thank you for looking.