Shocked and very saddened to hear of his passing. We were only chatting a few weeks ago but he didn’t mention anything amiss. I’ve known Roger since about 1991 and he has been an inspiration to me ever since. We were always chatting about things like EL84 loadlines, coupling capacitor charge pumping, a good current to run a 6dj8, EI vs toroidal (‘Ugh!’) output transformers, biasing, even automatic biasing, jfet and bipolar linearity, tube noise, etc etc! Having stayed at his in Santa Barbara way back then it was fun to have been driven around in the Jensen Healey and come back to be educated about the tempered tuning of pianos. We had a very close friendship, almost a relationship. He was always keeping an eye on the stock market on a tiny B&W TV. One day we were chatting and he had just received boards for the then new RM200. I sat and looked at it. LM394s for the input stage?, I said, dismayed. He was shocked and a little awed I had worked out the circuit from looking at the unmade circuit board. From then on he didn’t hold back from the engineering aspect of our discussions. Why use heated jfets? he said. One of many discussions about MC headamps. Another... ‘But that’s too much power for the screen grid!’ he retorted, disappointed that I’d neglected to work it out, unfolding a well worn chart of curves for the EL34 he’d made on his computerized valve tester, all written in Basic language. Another year, we went to Borders in SB where he gleefully pulled out a Class A review from Stereophile for the RM200. ‘Yessss!!’, he jolted excitedly. It really meant a lot to him, to be validated for all the hard work that went into it. We had a great time touring the countryside in southern Australia together, and he really considered moving there as he ‘didn’t like the way the US was going’. ‘Those mad Australians!’, a reference from his talk at the Burning Amp 2018 possibly referring to me..? A sad week this week. RIP my friend Roger. I am missing you already.
P.S. I live in the UK now and if you have one of Roger’s amps here I might be able to help service it. I used to service them down under.