the us-122l is an afordable usb audio/midi interface without mixer and workstation control features. Self powered via usb, the us-122l features phantom-powered preamps, analog inserts for working with outboard gear, dedicated headphone output, and adjustable zero-latency direct monitoring. Drivers are provided for asio, wdm, gsif and apple core audio.

the us-144 in addition to the features above, offers 4 in, 4 out digital s/pdif or analog operation.