Mozartaudio
Member of the Trade: My Audio Shop
Does anyone know, if T8000 will be presented at the Munich High End Show on May this year?
Tube is Electro Harmonix 6922 Gold pin me thinks
Looks like non gold at this website. lol.
http://av.watch.impress.co.jp/docs/news/1057193.html
Anyway it is super cheap at less than $50 for 2 tubes.
It uses the same tube as the vali 2? isn't that a $169 amp... lol you think for almost 6 grand they would have better tubes...
I like the tubes on the input. I wonder if you can tube roll the 6922? Or is it a Stax warranty / service fitting only. As tube rolling would be useful to fine tune the amp to mate with a particular DAC or just personal taste for example.
Based on this video: youtu.be/vKXg_7vVPtM?t=954
Tube is Electro Harmonix 6922 Gold pin me thinks
Does anyone know, if T8000 will be presented at the Munich High End Show on May this year?
In terms of tube rolling, in general the only tubes that can be recommended are the identical tube type but different manufacturers. In other words, rolling in a 6DJ8/ECC88/6922 from Telefunken, Siemens, Amperex, etc. should be fine. In fact there are actually books published which list acceptable tube substitutes, i.e. tubes with identical or similar electrical parameters. Tube circuits are generally designed specifically with the electrical parameters of the specified tube in mind, and should be optimum with that tube type only, so substituting a tube with different electrical parameters, e.g.. 6N1P, is not generally a good idea unless the circuit designer specifically approves the substitution.
the t8000 is fully dc coupled and the difference in transconductance between 6922 and 6n1p will likely seriously exceed the range of the servo and result in a fair bit of dc on the outputs. At least 100v, probably causing the output stage to overheat.
I asked. The answer was no. There is no auto-bias and I have no idea how they would treat the warranty if you tried.
I verified with them that it is an EH tube.