Well don't get your hopes up on the EP4000
Looks like its a rebadge.... same output as the 2500, 4000w is peak
http://www.behringerdownload.de/EP2000_EP4000/EP2000_P0A38_M_Web_EN.pdf
Pg 12
EP4000
RMS, 1% THD, both channels driven, bridge mode. 2400 watts - Peak 4000 watts
http://www.behringerdownload.de/EP1500_EP2500/IMPL Tech GLOB_P0183_M Web EN_2008-01-25_Rev.6.pdf
Pg 11
RMS, 1% THD, 1Khz, both channels driven, bridge mode 2400 watts.
Peak not listed.
both amps are 36.6lbs
Thanks thylantyr for catching it and revealing before people bought into it..