Well, that amp is still sitting behind my workbench. Someday, I’ll find an identical amp on eBay, buy it for parts, and cobble together something that works. In the meantime, I decided to rebuild a McIntosh 240: a hot, bulky, but virtually indestructible tube amplifier. I spent a weekend replacing the electrolytic capacitors and swapping out the dozen vacuum tubes, one at a time.
The McIntosh 240 — like many other amps from the ‘60s and ‘70s — is unimpressive on paper. A mere 40 watts per channel, total harmonic distortion a whopping 0.5%, and a stripped down weight of 56 lbs. Plus, no remote.
Output is via massive potted output transformers through old-fashioned terminal strips. For less than the price of the vacuum tubes, I could have bought an NAD 3020D or similar solid-state stereo amplifier with superior specifications, the form factor of a paperback, and the all-important remote.
Although I’ll concede on the specifications front, I’ll counter that I prefer the warm coloration that vacuum tubes provide. Most of all, I know that I can repair the amp — regardless of what happens. The transformers are a bit scarce, but can be found on eBay and other online sources.
Otherwise, everything is ordinary electronics stock — capacitors, resistors, diodes, and vacuum tubes. Schematics and manuals are freely available on the Web, and there are numerous third parties that cater to vacuum tube amp owners.
Do I miss a remote? I can live without one. Am I concerned that vacuum tubes are about as far from “green” as an electric toaster? Not really, because I use the amp maybe 30 to 40 minutes a day.
Besides, I’m saving one more device from the landfills. And lightning strikes? Bring them on!
In this era of disposable unrepairable electronics, I suspect that there’s a growing demand for the simpler but workable electronics of the past.
If you’ve recently turned to vintage repairable electronics, I’d like to hear about it. NV