Apogee Quartet USB Audio Interface – Chicago Music Exchange
Apogee Quartet 12 IN x 8 OUT USB Audio Interface for Mac and PC - The Sound Parcel
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Amazon.com: Apogee 2 Meter USB-C Cable for Apogee One (2013), One for Mac (2016), Duet (2013), and Quartet (2013) : Electronics
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Apogee Quartet USB Audio Interface 12 In 8 Out for Mac and iPhone MINT | Reverb
Amazon.com: Apogee Quartet - USB Audio Interface - 4 Inputs with World-Class Apogee Mic Preamps and Professional Line Level Input, Made In USA : Everything Else
Apogee Quartet 12 IN x 8 OUT USB Audio Interface for Mac and PC - The Sound Parcel