Hi can some one reccomend me an amp please budget around £400 cd player modified marantz cd5001 ose speakers modified b&w 603 old amp was marantz pm7200 i was considering a new marantz pm7001 ki on special for £399 but s/h is fine as long as it's good with vocals and not treble harsh, could run to maybe £450 or poss £500 for the right amp thanks