SmartFace is a compact into 2 out of 2 USB audio interface, in front of a XLR/TRS mixed input interface, and connect the two cores of the guitar interface:
Line input and output are RCA lotus:
AudiolinkPLUS 4 x4 is 4 in 4 out, dual XLR/TRS mixed input interface, headphone output in front:
Balance of input and output interface, and a MIDI input and output interface:
Two products price didn't come out, it is 24 bit / 96 KHZ accuracy standard. Article source: midifan.com