Universal Audio Apollo X4 Heritage Edition, 12x18 Thunderbolt 3 Audio Interface, With UAD-2 Quad-core processor for virtually latency-free recordings via plug-in emulations of classic compressors, EQs, tape recorders, microphone preamplifiers, and guitar amplifiers, 24 bit / 192 kHz AD/DA converter, 4 Unison microphone preamplifiers, +48 V Phantom power, Integrated talkback microphone, Dynamic range: 127 dB, Monitor functions with controls for Mono, Mute, DIM, and ALT, Design: Desktop, Includes software bundles Rackmount Heritage edition & Realtime Analogue Classics Plus, Suitable case: Article Nr. #495524# (not included)@+*Technical Specifications:*@+@+, 4 Microphone/Line combo inputs: XLR / 6.3 mm jack, 2 Hi-Z instrument inputs: 6.3 mm jack, 4 Line outputs: 6.3 mm jack, 2 Monitor outputs: 6.3 mm jack, ADAT/SPDIF optical input and output, 2 Stereo headphone outputs: 6.3 mm jack, Thunderbolt 3 connector (thunderbolt cable is not included), Input for external power supply, Dimensions (W x H x D): 280 x 130 x 200 mm, Weight: 1 kg