I second the advice to spring for the old series designed by the talented Mr. Reich, especially the DR-6 and DR-9. These may be just a little dark sounding but they are unfailingly musical even (or should I say, especially) compared to amplifiers of recent provenance.
A little bird tells me there is a set for sale for Sing$4500 at the second-hand dealer at Roxy's along East Coast Road.
A little bird tells me there is a set for sale for Sing$4500 at the second-hand dealer at Roxy's along East Coast Road.