B-Stock, Universal Audio Apollo x8; 18 x 24 Thunderbolt 3 Audiointerface; 24-bit/192 kHz; 6-Core SHARC DSP for internal UAD Realtime Processing; 4 Unison Mic-Preamps; Connections: 4x Mic-Input XLR, 2x Hi-Z Input 6.3 mm Jack, 8x Line-Input 6.3 mm Jack, 2x Monitor-Out 6.3 mm Jack, 8x Line-Out 6.3 mm Jack, S/PDIF I/O coaxial, 2x ADAT I/O, Word Clock I/O BNC, 2x Stereo Headphone Output 6.3 mm Jack, 2x Thunderbolt 3; +48V Phantom Power; Pad; Low-cut; Phase Reverse; Switch for Alt Speakers; assignable Button for Dim or Mono; LED-Meter; build-in Talkback-Mic; incl. external Power Supply; Support for surround formats up to 7.1 with speaker calibration and downmix; Dual Crystal Clocking for low-jitter environment and pure, artifact-free recordings as well as stable stereo imaging; contains Realtime Analog Classics Plus Bundle; for Mac/Windows; compatibel with Thunderbolt 2 via optional Thunderbolt 2 to 3 Adapter (not included); combine up to 4 Apollos with Thunderbolt Connector; Housing: 19" 1U, B-Stock with full warranty, may have slight traces of use