THIS IS NOT A HEADPHONE AMP. IT IS A PASSIVE EXTENSION WITH VOLUME ATTENUATOR.
Elite Core Wired Body Pack w/Volume Control For Headphone Extension. Designed to be used with EC-PRO-HEX10 or EC-PRO-HEX18 cable
(Requires a powered headphone amp signal)
Elite Core EC-WBP-VC Wired Body Pack w/Volume Control (3.5MM FM - XLRF)