Since I once owned the Golden Tube SE40 as well as Golden Tube's 300B model (both of which I liked a lot), I thought I'd chime in because yesterday I received delivery of the Coincident Dynamo 34SE previously discussed in this thread above. This is a used unit that I purchased for $800. The Coincident currently sells for $1,299 new; and, I will say right now, without equivocation, that this amp is indeed, one of the best audio bargains of all time.
The model I received is configured differently than the factory standard. Instead of EL34s this unit has Gold Lion KT77s with about 250 hours on them. Also, the rectifier tube is a NOS Phillips 5R4GYS bought from Upscale Audio, instead of the normal rectifier 5UG or 5AR4 as recommended by the manufacturer. It also sports a pair of 6SL7GT from Shuguang that comes standard with the Coincident Dynamo34SE. In addition to the amps mentioned above I have owned Forte 4, RM10, McCormack DNA, Dynaco ST70, Rotel, various Cary among others and currently own Cary V12, Cary SEI300B and Primaluna Dialogue One.
The Coincident is special and it is an absolute bargain. Congratulations to Israel Blume, the designer, manufacturer and distributor.
I will write a review soon. But first I'm going to purchase SED Winged C EL 34s as well as Shuguang 6CA7 Black Treasure tubes. I will also seek out some NOS RCA Red Base 6SL7 to try. I already have Sylvania NOS 6SL7s. Costly NOS tubes, but this baby deserves them.
Brownsfan, how is it going with your unit? Will pm you.