Features electrically isolated XLR I/O, a second auxiliary direct throughput with ground lift, and a transformer-isolated output. Has a 30dB pad, supplies 48V DC phantom power for microphones, has a ground lift, and has common mode noise rejection up to -100dB at 60Hz. Features a stand-alone housing with 14-gauge, I-beam steel frame with baked enamel finish and an innovative bookend cover.