If your loudspeakers are the original Legacy Classics...they are rated at 4 ohm and 92 db....which pretty much means that with 64 watts, you can easily produce 92 db 10' from the loudspeakers with plenty of headroom for peaks above 92 db.
I owned the Crown XLS 2000...plenty of power, decent low end...somewhat harsh on the top end.
I owned the Nuprime STA9....good low end....nice midrange....somewhat sibilant.
I owned the Parasound Halo A23...now replaced by the 23A...really good sounding amp...no real weaknesses
I now own the Digital Amplifier 2Cherry...dual mono, single chassis...think Halo A23 but with enhanced clarity that results in more realism, huge soundstage, and great detail. The basic model is $2400 and probably closer to $2k during their summer sale...and 30 day home trial. With 400W @ 4ohms and 800@ @ 2ohms....you will have more power than you will ever need...and the company is outstanding to deal with.
I owned the Crown XLS 2000...plenty of power, decent low end...somewhat harsh on the top end.
I owned the Nuprime STA9....good low end....nice midrange....somewhat sibilant.
I owned the Parasound Halo A23...now replaced by the 23A...really good sounding amp...no real weaknesses
I now own the Digital Amplifier 2Cherry...dual mono, single chassis...think Halo A23 but with enhanced clarity that results in more realism, huge soundstage, and great detail. The basic model is $2400 and probably closer to $2k during their summer sale...and 30 day home trial. With 400W @ 4ohms and 800@ @ 2ohms....you will have more power than you will ever need...and the company is outstanding to deal with.