2-channel audio ground isolator solves the poor CMRR (ground noise rejection), RFI susceptibility, and shield noise coupling problems common to transformer-less balanced inputs while maintaining audiophile signal quality. To avoid excessive high frequency losses, no more than 3 feet of cable should be used on each output. Integral ground option switches solve other equipment problems. Wide bandwidth -3dB at 0.25Hz and 50kHz. Handles signals up to +19dBu at 20Hz or +23dBu at 30Hz.