Originally Posted by gibosi
Actually, I found these Sylvania JAN 6186 6AG5WAs pretty cheaply. And I just assumed that as these are military tubes, they might be more rugged and durable, as is typical of mil spec tubes, but of course, I do not know. Also I took your advice and ordered the Reflector 6J3P-E tubes. As I have a an LD1+, with an op amp (opa2107), I was unaware that Reflector made power tubes that sound like "heaven in a glass bottle". Thanks for the tip!
And just for grins, I am buying a couple pairs of 6BC5/6CE5s (GE and Sylvania), and a pair of Raytheon 6EW6s. (The 6EW6s require the EF92 setting? Someday I will sit down with the data sheets and your explanation above and figure this all out, but for now, it is much easier to ask the "Expert" :). Gosh, this thread is killing my wallet! ahaha... :)
I forgot you most likely live in the US, where you can US tubes shipped to you for peanuts, that explains how you got tubes shipped to you so fast lol, and why I'd been buying UK/Russian tubes so far.
Yup, EF92 jumpers for all these tubes except the 6BC5/6AG5/6J3P (and 6J38P).
About rolling power tubes, I'm actually not sure we'd get better performance with another family of tubes (on the LD MK II / III / IV, not 1). The amp is pretty flexible for driver tubes but calibrated for a pretty specific type of power tube, which, I have to say, offers tremendous sound qualities. The 6N6P/6N30P family has some pretty high upper limits which are essentially the 6N30P-DR, the so-called (and not without reason) supertube, which is expensive but not by that much more of a margin than the recent 6h30Pi once you factor in its lifetime ($60 for 5000 hours, $200-250 for 10000-20000 hours), extra quality control and sound quality. It's not that bad when you look at the prices of good driver tubes in the Schiit Lyr thread...
So, instead of spending another $100 rolling mystery power tubes (which I'm quite sure is possible if we investigate thoroughly) to get better performance, I would just get the DRs straight away and keep rolling cheap driver tubes.
Speaking of which (shameless plug), I *might* be selling some extra power tubes I bought a few months ago as spares in a week or two, as I realized I will obviously not be using them in the next 15 years, as my current power tubes will most likely outlast the amplifier they're in. I'm still not sure where I should try to sell them, and I hate selling on fleebay with commissions at every step, so I might make a classified here. A matched quad, or two matched pairs of NOS NIB 6N30P-DR from 1980, so extra rare and disappearing fast, which was why I bought them in the first place. Give me a nudge if you're *hypothetically* interested.
Apart from the 6N1P, no other different power tubes have been tried right?
Edited by Audiofanboy - 3/1/13 at 1:23am