I can't even imagine the power of the 2500!
The last time I gigged my Tardis 700, I got to hear another player through the Tardis into two Genzler BA12-3 Bass Array Cabs. He was obviously too loud in the mix, and I asked my sound guy if he could turn him down in the FOH. To which he replied: "He is already OUT of the FOH!
I had the 700 set up with the Line Level pushed IN (not out), and turned only a bout half way up! The Equalizer was set flat. I had to get him to turn his bass down twice, and finally snuck up and lowered the Line Level! This was against two guitars with stage amps, a loud drummer and three singers, all of whom were in the FOH as well.
I can't imagine ever needing more power than that.