Headphone Amplifier for In-Ear Monitoring Wired, two-channel in-ear monitor amplifier for singers, keyboardists, drummers, guitarists, bassists and other musicians With metal belt clip 5/8" and 3/8" screw adapter for installation on a microphone stand Two separate input jacks for separate monitor signals or a stereo signal XLR/TRS combo input jack with locking mechanism that prevents accidental disconnection of the XLR cable 3.5 mm Stereo output jack for connecting your preferred in-ear monitor, earphone or headphones MONO/STEREO switch to send an incoming mono signal to both ears Volume and balance controls ON/OFF switch to switch off when not in use LED display for power supply Power supply via 9 V DC power supply with negative pole on the center contact or 9 V battery (both not included) Easily accessible battery compartment Practical belt pouch format for easy access and reliable connection to the source Compact, lightweight design with aluminum housing Dimensions including clip, sockets and buttons (L x W x H): 102 x 85 x 34 mm Weight: 295 g (without battery)