Jensen Transformers
Item# JEN-CI2MINI
When used in unbalanced audio consumer interfaces, this isolator not only eliminates hum and buzz but also enhances audio quality by reducing "spectral contamination" due to ultrasonic and RF interference. To avoid excessive high frequency losses, no more than 3 feet of cable should be used on its outputs. Features: Eliminates the inherent ground noise coupling mechanism
Common-mode ground noise rejection of 95 dB at 60 Hz
Wide bandwidth: !3 dB at 0.25 Hz and 50 kHz
Handles signals up to 7 volts...