The Dcode PS-T is low noise T-Power 12 volt microphone power supply. Runs on one 9 volt battery and has enough power to run high current microphones. Small, rugged, light-weight, and low noise make the PS-T perfect for powering microphones feeding DAT machines, radio mics, tape machines and mixing panels.Features:Low Noise! Equipped with well regulated electronics and precision resistors to satisfy the most demanding Digital requirements. Automatic Power on and off when the mic is plugged and unplugged.LED Blinks at turn on and turn off.Low Battery indicator.Simple Quick Change drop in battery compartment.Reverse battery protection.Internal -15 db pad and normal or red dot powering switches.Specifications:Size: 1.25" x 3.0" x 4.0"Weight: 8 oz.uses a standard 9 volt battery.voltage from 6.4 to 18 volts.Battery life approximately 24 hours (depending on mic load).Voltage is 12 vols + 2 volts.Current: 0.05 mA to 33 mA (direct short)Noise floor under .01 mVACLED lights at regulator drop out.