From Rolls:

Introducing the PM55P with Built-In Optical Limiter - the ultimate solution for performers seeking seamless signal monitoring. Designed to meet the needs of vocalists who crave control over their own sound within the main mix, this device is also a go-to choice for drummers looking to effortlessly blend a click track with a monitor signal.

Embraced by seasoned sound technicians, the PM55P doubles as a convenient line tester, ensuring quick and effective troubleshooting of audio systems. Versatility is at its core, as the unit operates on a single 9-volt battery or can be powered through the included PS27s power supply.

Specs:

• Max Input Level: -20 dB XLR, 40 dB monitor
• Input Impedance: 600 Ohm Mic, - 22k Ohm Monitor
• Output Impedance: 10 Ohms
• Gain: 20 dB 1/4", 50 dB XLR
• Bandwidth: 50 - 20 kHz
• S/N Ratio: 90 dB
• Limit Threshold: 0 dB
• Current Draw: 70 Mils Nominal
• Max Output Level: 100 Mil Watts @ 16 Ohm.
• Power: 9 - 15 VDC
• Size: 4.5" x 4" x 1.375"
• Weight: 1 lb (.45 Kg)
• Built in switchable Optical Limiter
• XLR Mic In & Pass Through
• Ground lift on XLR signal
• Stereo/Mono 1/4" Monitor Input
• 3.5mm and 1/4" Headphone outputs
• Powered by one 9 volt battery or the included PS27s power supply
• Lots of output level, it's loud

This personal monitor amp is in excellent condition with minimal signs of wear. This item has been inspected and tested by our expert tech.