Rolls HE18 Stereo Passive Transformer-Box

The HE18 is a two-channel audio hum and buzz remover. Everyone knows how annoying it is to have 60 cycle hum in your sound. Now you can eliminate virtually all ground hum and buzz by simply inserting the HE18 into the audio path. Plus, the unit will convert an unbalanced signal into a balanced signal, and vice-versa. This greatly improves overall noise performance.FeaturesEliminates ground loop hum & buzzLeaves signal grounds connectedPassive design requires no powerConverts balanced lines to unbalanced and vice-versaAdjusts signal voltages to match difference in ground potentialSpecificationsFrequency Response: 20Hz to 70kHz, +/-0.5dBDistortion: < 0.005% THD @ 1 kHzCrosstalk: >-97 dBMax Source Impedance: 1 kohmMin Load Impedance: 10 kohm Rolls HE18 2-Channel Hum Eliminator.