This versatile box is built with our premium TRSP-2 transformer for optimum durability. Features a phase reverse switch which flips the polarity of Input #2. Features Use fewer input channels by combining two mic lines into one. Use the polarity reverse switch to combine two mics - one with polarity reversed - to combine and correct polarity when using a pair of mics above and below a drum or in front and rear of an open backed guitar amp. Specifications Connections are female XLRs in, male XLR out. Input Impedance: 150 Ohms x 2 Output Impedance: 150 Ohms Operating Level: -50dBu to -10dBu Frequency Response: 20Hz-20kHz ±1dB
