as title really, have audiolab monoblocks and 8000q at mo with marantz cd63ki sig and pmc ib1 speakers. one of the audiolab monoblocks has started to distort at higher levels so i'm looking in to new amplification to suit my speakers. bass heavy house and drum n bass is my music of choice so solid powerful amps are a necessity. currently thinking krell kav400xi or musical fidelity kw500 amps if available secondhand, does anyone have any other recommendations? cheers neil