Audio Asylum Thread Printer
Get a view of an entire thread on one page
|For Sale Ads|
In Reply to: RE: Question about matching tubes between phono pre-amp & headphone amp posted by peresmeshnik on February 17, 2017 at 19:40:58
I don't know the architecture of the Schiit, but if they are the main source of amplification, which is not unusual in a headphone amp, then they should be matched.
I forgot to mention that this site had some really good private sellers of used tubes. I think you should take a look, I have been pleasantly surprised. However let me reiterate that the 6922 was not made in the kind of quantities that the 12A_7s were, or so I am told. Sadly not a lot of current manufacturers use 6DJ8s which are more abundant.
Thanks, Mechans, for your further thoughts. According to Schiit, the Mjolnir II accepts both 6992 *and* 6DJ8s. They also indicate that the stock tubes can be swapped out "for anything in the 6DJ8, 6922, ECC88, and 2492 families," so hopefully that will broaden my choices. Right now I have installed Schiit's (stock) 6BZ7 tubes, which sound decent enough. But I have not yet compared them to anything else. But I'm still wondering, are the differences between the 6BZ7, 6DJ8, 6922, ECC88, and 2492 tube families merely formal/superficial, i.e. simply a difference of name/description? Or are there important structural differences between them which, while potentially significant sonically, nonetheless allow them to be completely interchangeable in an amp like the Mjolnir II?
I don't have any experience with the 6BZ7. It's name congers up an octal but obviously isn't one. Will you hear a difference if you roll the tubes? I certainly do in many cases, but not all circuits really permit that. Have you tried rolling some other tubes in other gear? what's been your experience with that? None of that tube family is warm IMHO, but try to get some used Mullard/Philips 6DJ8s, you might them.
No, I have not yet tried any different tube types in either my Bellari (phono stage) or the Schiit Mjolnir II, so I really can't be certain that my ears will hear whatever differences do exist, esp. if there is some other part of my audio gear that is weaker than needed to take full advantage of tube differences. But I am anxious to try out a Mullard -- such as the Philips 6DJ8 you mentioned -- as soon as the opportunity presents itself, and will report on the results (for whomever that might be of interest). Thanks again, Mechans, for your suggestions in that regard!
Post a Followup:
Post a Message!
This post is made possible by the generous support of people like you and our sponsors: