As one of the only small computer interfaces with analog inserts, you can use the US-122 to place hardware devices (compressors, etc.) into the recording signal chain. Two line-level inputs on balanced 1/4" TRS jacks are included, and are switchable to guitar-level for direct instrument recording into your computer. The US-122 also provides a dedicated control for adjustable zero-latency direct monitoring, providing a sonically pure reference point before entering DAW processing. Its two line-level outputs provide control for levels, and a dedicated headphone output is also included. Replaced by the Tascam US-122L.