Audio-Technica AT8531 Belt-Pack Type Power Module w/ Phantom or Battery Operation 8-channel is powered by an ESP

is powered by an ESP Designed single-coil SS-120 pickup in the neck position

” The HP2 can be powered with an external DC power supply or a nine-volt battery that lasts more than seven hours and includes an LED battery indicator

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Audio-Technica AT8531 Belt-Pack Type Power Module w/ Phantom or Battery Operation 8-channel is powered by an ESPThe Audio Technica AT8531 is an in line body pack power supply for AT gooseneck and overhead microphones. The unit is designed to supply 9 to 52V phantom power and uses AA batteries. A low frequency roll off switch is provided and minimizes structure and wind noise and a belt clip provides added stability.