Built-in 250W+250W/4Ω amplifier Which can be selected as Main+Main, Main+Monitor or Main, only(bridged operation,500W/4Ω) 16 types of digital effector allow the user to add reverb or ambiance to the mix. 7 input channels compatible with MIC/LINE level (channels1-5 accept stereo line inputs,channels6-7 accept USB player or stereo line inputs) 3-band EQ on each input channel Dual 7-band graphic equalizers are available for both main and monitor mixer Switchable global phantom power for all MIC input connectors Effect output for external signal processing Turn on delay, protection of over-thermal, short circuit and zero offset Tape in and out (via RCA/PHONO connectors) allows for connection of aTAPE/CD Player without taking up a main input channel Power supply: 115V/230V