Universal Audio Apollo x4

Mono analog FET compressor/limiter with balanced XLR line I/O, original Jones barrier strip connections, and IEC mains power.

Desktop 2 x 4 Thunderbolt 3-powered audio interface with two mic/line preamps, one front-panel Hi-Z instrument input, stereo monitor outputs, and a stereo headphone output.

Desktop Thunderbolt 3 audio interface with two Unison mic/line preamps, Hi-Z instrument input, TOSLINK optical ADAT/S/PDIF input, stereo monitor and line outputs, and headphone output.

16 x 22 Thunderbolt 3 rack audio interface with two Unison mic preamps, dual front-panel Hi-Z inputs, six line inputs and outputs, stereo monitor outputs, dual headphone outputs, ADAT, S/PDIF, word clock, and external DC power.

Rackmount 18 x 24 Thunderbolt 3 audio interface with four Unison mic preamps, two Hi-Z instrument inputs, eight line inputs, eight line outputs, stereo monitor outputs, dual headphone outputs, ADAT optical I/O, coaxial S/PDIF I/O, word clock I/O, and

16 x 22 Thunderbolt 3 rack audio interface with 8 Unison preamps, 2 Hi-Z inputs, DB25 analog I/O, switchable optical ADAT/S/PDIF I/O, word clock I/O, dual headphone outs, and monitor outputs.