2 channel The Line Level Shifter is designed to increase or decrease signal voltage (-10dBV and +4dBu) without adding noise. The Line Level Shifter also converts back and forth between balanced (+4dBu) and unbalanced (-10dBV) signals automatically. The Line Level Shifter also contains Ebtechs Hum Eliminator technology to break ground loops that cause AC hum. This model, LLS-2 features 1/4" TRS I/Os only.Main Features:Converts back and forth between –10dBV and +4dBuConverts automatically back and forth between balanced and unbalanced lines at either end1/4" TRS “smart” jacks (tip, ring, sleeve) inputs and outputsBuilt-in Hum Eliminator™ technology eliminates AC hum / 60Hz buzz and noiseAutomatically translates signal voltages to match differences in ground potentials, avoiding clippingCompletely passive design with audiophile quality components assures the best possible noise and distortion performanceFrequency response 10Hz to 40kHz plus or minus 1dB into 10kOhm loadDistortion less than 0.002% THD @ 1kHzCrosstalk better than –97dBMaximum source impedance 1kOhm. Minimum load impedance 10kOhm