I dont think this is widely known but it does work as a two channel mic preamp without a computer. You will still need to power it via a usb mains plug but the analogue outs can be taken live from the monitor outs. The item "SSL 2 Audio USB Interface and Mic Preamps" is in sale since Wednesday, October 13, 2021. This item is in the category "Musical Instruments & DJ Equipment\Pro Audio Equipment\Audio/MIDI Interfaces".The seller is "radiophonstudio" and is located in London. This item can be shipped to United Kingdom.