Check the listing for details. PreSonus Quantum 2 22x24 Thunderbolt 2 Low-Latency Audio Interface -UC. Condition: Open box. Listed at 519.99 USD. What we sell?PreSonus Quantum 2 22x24 Thunderbolt 2 Low-Latency Audio Interface Open Box aking full advantage of the high-speed Thunderbolt bus and ADAT Optical I/O, the PreSonus® Quantum 2 audio interface delivers up to 22 inputs and 24 outputs, with extremely low latency. Boasting superb audio quality; 24-bit, 192 kHz recording and playback; recallable XMAX microphone preamps; and the ability to expand your system as your needs grow, it’s a great choice for a wide variety of professional and semi-pro producers and electronic musicians. Technical Details: PreSonus’ Fastest and best-sounding audio/MIDI interfaceUses high-speed Thunderbolt 2 bus24-Bit resolution and up to 192 kHz sampling rate (120 dB dynamic range)22x24; expandable to 80x80 by stacking up to four Quantum 2s via Thunderbolt2 Combo mic/instrument inputs and 2 combo mic/line inputs, with recallable XMAX preampsDual ADAT Optical, S/PDIF, MIDI, and BNC word clock I/OStudio One Artist and studio Magic plug-in Suite included Package Contents: 1x PreSonus Quantum 2 Audio Interface Thing you should know: // NEED TO PRICE MATCH?See lower price? We will try to give you an even lower price! Just ASK us! // NEED TO TALK TO US?Just email us and we will get back to you within 24 hours // NEED TO RETURN or EXCHANGE?You can return the unit with eBay Easy Return step or just email us and we will tell you the exact instruction on how to return the unit. We will also give you an RA# so the unit won't be lost. // OUR RETURN / EXCHANGE POLICY60 days full refund . We will pays for shipping 2-way for any defective units . Unwanted? Just return it to us for full refund . NO QUESTIONS ASKED!