A company called AV Lifesavers has launched what it’s referring to as a pocket-sized XLR Mixer — and it doesn’t require a battery or AC power.

The Mini XLR Mixer from AV Lifesavers is designed to provide FOH engineers an extra one to two XLR inputs to cope with unexpected audio emergencies. Its passive design allows it to put into operation quickly when time is critical.

The Mini XLR Mixer works with any balanced mic or line level sources, with a volume control for each channel. Phantom power for condensor mics is passed through at a reduced level of 37-42 volts (with standard 48 volt phantom power). Audio Insertion loss is approximately 7 db. And a phase switch option is available for flipping phase on channel #3 to accommodate snare top and bottom mics, etc.

All the product details are here.