Audiophile quality 1:1 line level audio transformer interface. Transforms balanced to unbalanced line signals or unbalanced to balanced line signals. Perfectly balanced proprietary transformer design with ultra-high permeability Ni-Fe core. Frequency Response of 20Hz to 20kHz (-0.5dB) with no more than +/-1.0dB of variation from 14Hz to 80kHz. Total Harmonic Distortion is <0.015% from 70Hz to 80kHz. Total Harmonic Distortion is 0.5% at 20Hz. Electrical isolation of >500V between secondary and primary winding or windings. Insertion loss <1.0dB. Input levels up to +22.2dBu are acceptable. Ground lift with RF rejection circuitry. Excellent for low to mid impedance signal sources.