RDL TX-AFC1M Unbal. to Bal. Audio Transformer - Phono, XLRFeatures: Studio Quality Bifilar Audio Transformer Connectorized Audio Format Conversion Galvanic Isolation with the Convenience of RDL TXs Gold Contacts on Input and Output Unbalanced to Balanced Conversion Unity Gain Frequency Response: 20 Hz to 20 kHz (+ 0. 1 dB) THD: < 0. 06% (50 Hz to 20 kHz, 10 dBV input) 0. 0015% (Typ. 1 kHz, 10 dBV input) Input: 10 dBV (+22 dBu max.), 10 k ohm Phono jack Insertion Loss: 0. 25 dB (20 ohm source 10 k ohm load)