ウェブ2007年11月13日 · If you aren´t going to make use of this - and let´s face it, most of us won´t - the 0404 USB 2.0 is therefore, to all intents and purposes, only a 2-in/2-out audio interface. Good points MIDI I/O and a small mini-jack for desktop computer speakers completes the connectivity, but there´s also a socket for a power supply.