Compact Monitor Headphone Amplifier. Ideal for Studio and Stage Applications. Includes DC 12 V Power Supply.Microphone Input Connector: XLR Microphone Impedance: Approx 2kO (Balanced) Microphone Max Input Level: -18 dBu Microphone Gain: 40 dB Microphone Bandwidth: 15Hz – 25kHz Monitor Input Connector: 1/4” Stereo Jack Monitor Gain: 10 dB Monitor Bandwidth: 10Hz – 80kHz Headphone Output: ¬” and 3.5mm Stereo Jack Headphone Impedance: Min. 30O Headphone Max Output Level: Approx +10 dBu (60 mW) @ 100O Load Power Supply: 12v DC 500mA Weight: 0.380 kg Dimensions: 104 x 62 x 47mm. Professional monitor headphone amplifier suitable for connecting a microphone and stereo line-level music source. There are separate microphone level and monitor controls. The stereo input can be switched to mono if required. There is a choice of either a ¬” headphone output or a 3.5mm stereo output- so connecting in any type of headphone shouldn’t be a problem. The microphone input is via a XLR- with a through socket to link to other equipment. The line input is via a stereo 1/4″ jack. A good choice for studio and live applications where the user needs to monitor a audio and microphone source.. Professional monitor headphone amplifier suitable for connecting a microphone and stereo line-level music source from Terralec ltd. headphone amplifier