What is it?A pair of high-powered, portable PA systems.DetailsSuccessors to Yamaha’s STAGEPAS 300 and 500, the 400i and 600i systems combine slim, lightweight speaker enclosures, built-in amplification, detachable powered mixers plus all the cables required for a complete portable sound solution. Said to be quick and easy to set up in a variety of configurations and environments, the newly-designed systems feature high-performance DSP and offer increased power output - 400W for the 400i and 680W for the 600i - as well as substantial improvements in sound quality. To complement the boost in performance, both new Stagepas systems now offer iPod/ iPhone connectivity, onboard feedback suppression and greater EQ versatility in addition to improved functionality and ease of use. The 400i combines 8” LF and 1” HF drivers and features a detachable 8-channel mixer (4 mono/line + 4 mono/2 stereo line), 2-band channel EQ, one-knob master EQ with virtual bass boost, phantom power, monitor and subwoofer outputs, plus high-resolution SPX digital reverb. The 600i system additionally incorporates 10” LF and 1.4” HF drivers with a 10-channel mixer (4 mono/line + 6 mono/3 stereo line) offering 3-band channel EQ.And another thing…An optional reverb footswitch is available for connection to 400i and 600i systems, both of which include four reverb programs with parameter control.