QTX MM41 4 Channel Mini Microphone Mixer - 170.202UK

Compact mono microphone mixers with 4 or 8 low impedance jack inputs, mixing to a single master jack output. Onboard separate volume controls for each microphone and the master output. Powered by 1 x 9V battery or optional 12Vdc adaptor
Supplied with 9V battery
Available in 4 or 8 channel versions
Optional 12Vdc power input
Battery 9V battery (PP3 supplied)
Input impedance 3.3k Ohms
Output impedance 600 Ohms
Output : master 1 x 6.3mm jack
Dimensions 150 x 108 x 64
Power adaptor 12Vdc, 200mA (optional)