The face of the unit has two level meters: one for the Mic / Line / Hi-Z inputs on the left, and another for the Headphone / Monitor outputs on the right. It has two combo XLR mic and line inputs, a pair of 1/4″ master outputs for plugging your monitor speakers, an instrument or “Hi-Z” input for plugging a guitar in, and a 1/4″ headphone output.
The Universal Audio Arrow is a Thunderbolt 3 interface for Macs and PCs.
