Nooo.... FireWire! good latencies to be had.. :-) 4.35 millisec with Hexter synth, played for 15 mins with Seq24, 0 xruns while playing.. (did have 3 while loading though.. needa work on that :-) Check the AudioFire 2<http://www.echoaudio.com/products/firewire/audiofire2/index.php>page for exact details, but it has RCA SPDIF & MIDI, 2 TRS ins & 2 TRS out. Its headphones jack is on seperate connections in JACK, so you can monitor sound on the phones without it being on your main outs. (Ideal for DJing). Any specific q's, just ask! -Harry