If the iD4 is a bit too pricey for you though, the absolute best value-for-money interface at the moment is the Behringer U-Phoria UMC22. Costing less than the average family takeout, it’s not perfect ...

There’s still plenty of useful hardware out there that uses an RS-232 interface, like the Behringer Ultradrive ... a cheap DB15 breakout adapter. The USB cable is used to power the board and ...