U2B 4 extends the U2B 2 format to two independent stereo pairs. It converts two unbalanced RCA sources into four balanced XLR outputs, with per-output gain setting and operation as four mono channels when required.

• Two stereo RCA inputs with electronic isolation and RF filtering.
• Four balanced XLR outputs with recessed gain presets.
• 100-240 V AC mains input and external +/-12 V DC connection.