The CleanBox II from ART is an inexpensive passive, in-line device that basically eliminates the 60Hz hum caused by ground loops. It is designed for use with guitar amps, effects processors and keyboards before reaching the input stage of a mixer. Cost-effective in-line hum eliminator for use with guitar amps, keyboards and signal processors producing 60Hz ground loop noise Removes ground loops without any signal degradation Safe, passive operation 1/4" TRS input and output connectors read both balanced and unbalanced lines SPECIFICATIONS Connectors 2 x 1/4" TRS phone, balanced or unbalanced Controls No Performance Input 0.4dB @ 100kΩ load 5.5dB @ 6kΩ load Frequency Response 10Hz to 50kHz, +/-0.5dB Dimensions (WxDxH) 4.5 x 2.9 x 1.5" (114 x 73 x 38mm) Weight 14.4oz (408g) Package Weight 1.05 lb Box Dimensions (LxWxH) 13.1 x 5.7 x 2.2" www.musicredone.com is an official dealer Art.