THIS UNIT IS IN EXCELLENT CONDITION * WILL SHIP ANYWHERE IN U.S.A. and you can pay with VISA M/C or PAYPAL * The Quattro is a 4-in/4-out audio interface that also works at resolutions up to 24 bits and sampling rates up to 96 kHz. The box can deliver a 4-in/4-out throughput when processing 16-bit audio with 44.1 or 48 kHz sampling rates. It also provides 2-in/4-out or 4-in/2-out processing at 24-bit resolution with the same sampling rates. At the top of the scale, the Quattro offers 2-in or 2-out processing with 24-bit resolution at 88.2 or 96 kHz sampling rates. The Quattro also includes a Direct Monitoring feature that can route inputs 1 and 2 as well as 3 and 4 directly through to their respective outputs, thereby eliminating monitoring latency when recording.In addition to offering front-panel MIDI In and Out ports, the Quattro includes provisions for an optional 15-pin DB connector that can be used to connect an M-Audio Omni I/O interconnect/mixer box directly to the Quattro's four input and output buses.