Tried some new power supply bypass caps, but removed them PDQ, as they just didn’t work. This time however upon removing them I have cleaned up the busbars where the bypasses were rather than simply cutting off the leads. Tidiness doncha know.
Maybe it’s a characteristic of Richard’s circuit, but adding anything other than what is essential to make the things function seems to result in a retrograde step in terms of sound quality. Maybe also, the 10,000uF, 80V, SuperTech slit-foil power supply capacitors I bought from Hi-Fi Collective, simply don’t need bypasses on them.
I know Richard had been of that opinion, as he told me last year, that he’d tried Denis Morecroft’s (DNM) original slit-foil electrolytics back in the late ‘80s and had found them excellent sounding without needing to be bypassed. He had however declined to use them as they were too expensive at the time. He’d therefore decided to continue to use “normal” PSU caps with film bypasses as the then new slit-foil types would have pushed up his prices too far.
Anyway, the OTL has been put away for the Summer as it was making the room too hot and the missus was complaining. Mind you I can see her point, it was sweltering in the front room the other night. It’ll reappear in the Autumn/Winter season.
It’s nice to have more than one amp.
Sgt. Baker started talkin’ with a Bullhorn in his hand.