diytube.com

Like the topic reads, I accidently ran my Dynaco ST 35 (with the EFB board) with only one speaker attached. I was initially worried that I wrecked it, but it works fine. Even though it is rebuilt, it still has its original transformers. Perhaps this is a testament to that vintage iron?

That happened with me as well when I had some friends over for an audio gathering and we were comparing my Stereo 35 with EFB against a Conrad Johnson MV75A1 amp. My initial reaction was one of panic and I immediately powered off the Dynakit Stereo 35. Once I connected the other speaker and turned it back on, the amp was fine. In fact, my friends all preferred the Dynakit amp over the higher-powered CJ amp.

Anyone that's interested in this subject with some observations and explanation of the subject, may wish to view the following:
http://www.tronola.com/html/unloaded_vt_amps.html

Very good. Thanks for posting that link.