Are you looking for a straight amp or an integrated amp?
Straight amp. Actually, this is sort of a curiousity question. I already have an older Moscode 150 modded coming at about that price, and currently am using a Knight vintage KB-85 that would be a bit over that price, but is a little under powered at 35 wpc for the LS9 kit that I am building.
you may wanna wait - unless the current loads of the ls-9 are extreme, 35wpc should be plenty for 'em, at 91db-efficient. it should only take 32w to hit 106db peaks; in-room w/a pair of speakers. especially w/line source speakers - you may actually get louder...
all that being said...

i yust received as partial trade, a nice hypex ucd-180 based digital amp, rated at 180wpc into 4 ohms. (less into 8 ohms, if i understand how these amps work.) i yust got it literally yesterday, & i have no use for it, so it's going up f/s. i understand that these amps, when all dolled up, will sell for a
lot - diycable's iteration, for example, (somewhat of a bargain, imo), is pushing $1400:
http://www.diycable.com/main/product_info.php?products_id=616&Cid=7a3fc53af258484026429d9087f6414fif you want no-frills, but the same performance, check out my amp - as i yust now got it, & as it's a trade, i might be able to get close to, or meet your budget. aa i understand that these amps work well w/the gr-research ls's... forgive the pics, they were from the p.o.; i can get more detailed ones later. but, these will give you an idea...




doug s.