Amp for Harbeth p3esr

Hello,

I have been considering making the switch from my current speakers to pair of Harbeth p3esr's for a small room setup. Current speakers are becoming overkill/fatiguing after a few hours of listening and was wondering if anyone had any thoughts on these speakers as far as amps are concerned. I see they are a fairly easy load to drive and my current amp is a Sony TA-A1ES. I really like the amp but am worried that if the Harbeths do not have enough bass, I do not have the option for a sub out on my current amp. Does anyone have any feedback as to how the bass will respond in a small well damped room roughly 10'x11'? Also, if a sub is needed, what amp in the $1k-$1,500 range with a sub out would be sufficient? Thanks!