Ebtech LLS Line Level Shifters The Line Level Shifter's primary function is to increase or decrease signal voltage back and forth between -10dBV and +4dBu (depending on which way you route through it). The Line Level Shifter also breaks loop antenna that causes ground hum and buzz as well as converting back and forth between balanced and unbalanced connections and preventing the cable from acting as an antenna for noise. Simply place a channel of the Line Level Shifter on the cable connections between the two mismatched pieces of equipment. Will not affect the quality of the audio, it will improve it. The Line Level Shifters feature 1/4" smart jacks that accept any combination of unbalanced (TS) or balanced (TRS) plugs. These are passive devices (no power required), in cold rolled steel housings, hand-soldered circuit boards with top quality components and hardware. Features Converts back and forth between -10dBV and +4dBu Converts automatically back and forth between balanced and unbalanced lines at either end 1/4" TRS "smart" jacks (tip, ring, sleeve) inputs and outputs. Built-in Hum Eliminator technology eliminates AC hum / 60Hz buzz and noise Automatically translates signal voltages to match differences in ground potentials, avoiding clipping Completely passive design with audiophile quality components assures the best possible noise and distortion performance Frequency response 10Hz to 40kHz plus or minus 1dB into 10kOhm load Distortion less than 0.002% THD @ 1kHz Crosstalk better than -97dB Maximum source impedance 1kOhm. Minimum load impedance 10kOhm Available in 2 channel box or 8 channel single space rack versions 2 Year warranty. Ebtech quality and reliability Made in the U.S.A.