I spoke to the gentlemen at Tenor some years back at CES. Very nice people and very respectful. The designer knew who I was and told me precisely what was in the amp.
Its no secret that the amplifier uses a Circlotron in the same manner that we pioneered. There's only so many ways you can do that. We explored them all years ago. We even published the circuit topology in Positive Feedback magazine about 1992, complete with 6C33s (FWIW we were the first manufacturer in the US to use the tube). It is very definately a circuit that we used.
Its no secret that the amplifier uses a Circlotron in the same manner that we pioneered. There's only so many ways you can do that. We explored them all years ago. We even published the circuit topology in Positive Feedback magazine about 1992, complete with 6C33s (FWIW we were the first manufacturer in the US to use the tube). It is very definately a circuit that we used.