P2 Portable in Ear Monitor Amplifier,Analog Headphone Amplifier with XLR and TRS Input 3.5mm Output, Stereo Headphone Amp with Stereo/Mono Switch for Keyboardists,Guitar (Single Channel)

[Long Battery Life] Our portable headphone amplifier adopts battery power mode, you can use 2*AAA batteries, which can run continuously for 12 hours, power-saving, long battery life, or you can use rechargeable batteries, meanwhile, we have carried out an innovative tool-less belt buckle design, which can be convenient for you to change the batteries. (Note: Batteries not included)