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Excellent condition – Still in the original box with USB cable, driver disc and manual The US-144mkII starts with two great-quality XLR microphone preamps with phantom power for condenser microphones. There's also a pair of balanced line inputs and a guitar-level in for direct recording of electric guitar or bass. A pair of S/PDIF digital inputs and outputs is also included, for a total of four inputs and outputs at up to 96kHz/24-bit audio quality. The US-144mkII connects to Mac or Windows computers using USB 2.0, and the unit is powered over the USB cable. Zero-latency monitoring is available for recording without the delay going to a computer and back. MIDI input and output jacks allow connection of synths and drum machines. Connect the US-144mkII to monitors through the line output or use headphones with the front-mounted stereo 1/4" jack. Separate controls for line and headphone out means you don't need to switch off monitors to work in headphones. The US-144mkII makes a perfect portable interface with metal components and solid construction built for the road. • Bus-powered USB 2.0 audio interface • (2) XLR microphone inputs with phantom power • (2) 1/4" balanced line inputs • Switchable guitar level input • 1/4" stereo headphone output • MIDI input and output • S/PDIF stereo coaxial input and output • Individual Line and Headphone out level controls • Up to 96kHz/24-bit audio resolution • Zero-latency hardware monitoring • Mac and Windows drivers included • Aluminum case construction