Aardvark Direct Mix USB3 This is a very old audio interface. It's USB-connected only, and designed to be used immediately without installing drivers. It's probably over 20 years old, but it worked without any problems in my environment (MacOS 10.13). Operation is simple; just connect it to your computer via USB, so you should be able to use it without reading the manual, but there's a link to the manual (in English) on the following page: https://www.zzounds.com/item--AARUSB3 It has microphone and guitar inputs, and you can switch between sampling rates of 44.1 and 48. It also has a headphone output. Thank you for looking.