Esky Ground Loop Noise Isolator, Works with HIMBOX/iPod/Zune/iRiver and Others Designed for use with all audio players (Including Himbox) with 3.5mm/1/8'' audio outputs: iPods, MP3 players, etc. Close to perfect response of +/- 0.03 dB from 2-20,000 Hz Utilizes proprietary audio transformers for a 1.3 dB gain Female 3.5-mm input, Male 3.5-mm output Reliable and friendly customer service ready to respond within a 24 hour time frame. 30-Day Money Back Guarantee, 12 Month Replacement Warranty and Lifetime Support Guarantee