Adcom 535, damnable auto correct!
Old Amps that can still Kick Butt
Not being a believer that time necessarily = progress, I would like to offer the following example of a sonic gem that has transcended time and can totally kick butt in a modern milieu:
The Robertson 4010. I got one of these about two years ago because it was in immaculate condition, the price was so low and I was inquisitive. I hooked it up and let it warm up for a couple of days. OMG this thing was in the super amp league: Transparency to die for, slam that you couldn‘t‘ believe for for a 50W amp.. Peter Moncrieffe wasn‘t wrong in his review of this amp: this thing is in the Sterreophile Class A component category hands down. Even after all these years.
What amps have you encountered that have defied time and can still kick butt today?
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@bpoletti / @nitrobob - The later DH-500/DH-220 driver boards had polypropylene caps, from C1, throughout (same board in both, btw). Hafler offered upgrade kits that contained all those caps (Sprague Orange Drops), of which I still have one. They went through three different power switches, over the years, before they found one that would handle the inrush current. I have three of the last Carling switches, with the updated wiring diagrams. The earliest 500/220 amps had 10uF electrolytics, at the board input, later replaced with 2uF polypropylene. Hafler offered a DH-203 (Bailey Mod for C1) upgrade kit, of which I have two (4 caps). I mention all that because I’d happily donate (gratis) those parts, to any party/parties interested in resurrecting their older Hafler(s). This company offers MOSFETs, with which to replace those used in Haflers, but- to my knowledge, NOT as matched NPN/PNP pairs/sets, which is critical: http://www.exicon.info/
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