It can be used as a 1x4 or 2x4 DA in stereo or mono. Each stereo output pair can be independently switched to mono without affecting the other output. USDA can produce both stereo and mono outputs simultaneously from a stereo source. Inputs and outputs can be operated either balanced or unbalanced. The audio level of each output can be adjusted over a 26db range.
All circuitry is transformerless and direct-coupled for sonic accuracy.
Connections are via barrier strip to assure long-term reliability.