Well, you have a really refined speaker, (I love Rockport Speakers!), so you really should spend more money on a fairly high powered, but really, really good amp.
But, since you are willing to give up some power, you might want to try a Class "A" SET amp from Pass Labs. There is a 60 wpc one for sale on Audiogon for $1,200.
(And no, I have no affiliation with the seller.)
Note, the seller says that the bass response is a bit soft, but given that you're only using monitors, that might not affect your sound, as your monitors are rolled off anyway.
Aleph 5 Amp for Sale
If you're really broke, you could try one of Pass's first designs, A Threshold S/200, which has 100 wpc, (which power wise is a better match, but it is not as good as the Aelph. There is one for sale here on Audiogon too.
http://www.audiogon.com/cgi-bin/cls.pl?ampstran&1269058747&/Threshold-S/200-Nelson-Pass-St
My two cents worth.
But, since you are willing to give up some power, you might want to try a Class "A" SET amp from Pass Labs. There is a 60 wpc one for sale on Audiogon for $1,200.
(And no, I have no affiliation with the seller.)
Note, the seller says that the bass response is a bit soft, but given that you're only using monitors, that might not affect your sound, as your monitors are rolled off anyway.
Aleph 5 Amp for Sale
If you're really broke, you could try one of Pass's first designs, A Threshold S/200, which has 100 wpc, (which power wise is a better match, but it is not as good as the Aelph. There is one for sale here on Audiogon too.
http://www.audiogon.com/cgi-bin/cls.pl?ampstran&1269058747&/Threshold-S/200-Nelson-Pass-St
My two cents worth.