Are you aware that the 12 o'clock position on most amplifiers is their maximum output? Many amps at this point are giving their all, and so will have very little in reserve for any sudden transients.
In this case, I'd recommend the Audiolab 8000s pre amplifier, and two 8000m monoblock amplifiers, which can be had for around £1,000. This may sound a little excessive, but with 125wpc on tap, you're less likely to run out of power when you need it. Most other amplifiers around this price point won't touch them for power output, although one or two might be a little better musically. Add to that a pair of Monitor Audio RX6's, Wharfedale Diamond 10.7's, or Mordaunt Short Aviano 8's, and you'll have a pretty powerful set up. Like I said, the system may not be the very best sounding you'll get, as my original system recommendation will sound better, but you need to make sacrifices in order to make sure you don't damage anything when you want a bit of a blast.
Then spend your remaining budget on a CD player - a Rega Apollo is quite a smooth player that won't get too harsh when turned up, and maybe a good quality Marantz or Yamaha CD will fit the bill for you.