B-Stock, Steinberg AXR4; Thunderbolt 2 audio interface; 28 x 24 Channels; 32-bit integer / 384 kHz recording & playback; 4x AXR Hybrid microphone preamp with Rupert Neve designs SILK circuit emulation; SSPLL technology for extremely low jitter; DSPX chip and dspMixFX technology for latency-free monitoring with DSP-based effects; 28x24 matrix mixer; LCD display; +48V phantom power; connectors: 2x Mic/Line/Instrument Combo input XLR/jack 6.3 mm, 2x Mic/Line Combo input XLR/jack 6.3 mm, 8x Line input 6.3 mm jack, 8x Line output 6.3 mm jack, 2x ADAT / S/PDIF input and output, AES/EBU Sub-D25, 2x Stereo headphone output 6.3 mm jack, MIDI input and output, 2x Thunderbolt 2 connector, BNC word clock input and output, power supply connector; up to three AXR4 cascadable; inkl. Cubase AI version with full 32-bit support; Design: 19" 1 U; Dimensions: 480 x 45 x 378 mm (WxHxD); Weight: 4.6 kg, B-Stock with full warranty, may have slight traces of use