PS Audio BHK 300 mono VS Modwright KWA 150SE mono VS D'agostino Classic stereo

Hi Dave,
Opamp in the circuit kills the sound, good warning/advice Dave. I'll acknowledge that there may be some good sounding opamps available.  I think generally speaking most audio components are better off without them. Interesting that two amplifiers (DR10 and DR25) from the same company can vary so greatly in their respective sound quality. 
Charles 

Hi Charles,

My DR-10 sample (NIB) could have been defective. I had heard the Stages at the dealer with the DR-25 (that I ended up with) and the sonic differences were profound with the Stages in my room at the time.

Never regretted trading up to the DR-25 as it is a benchmark of amplifier performance with difficult-to-drive loads IME.

Best to you Charles,
Dave

Dave,
Your impressions regarding the Classe' models got me curious and I did a discussion search. Nearly unanimous agreement with you of the DR10  being definitely inferior to the DR25 model. Your response to Thieliste is àccurate and apparently widely held. 
Charles 

Even a blind squirrel finds an acorn now and then. ;>)

Thanks Dave for your advice, i will check if i can find a Fifteen or even a DR-25 who knows.
I have another question, do you think i could use my CAP-151 as a preamp with one of these stereo amps or should i sale it and buy a real preamp ?
I know that the CAP-151 can be used as a preamp only but how good is it's preamp section ?