OK. I see what your saying now. That with these cheapy tubes, there's no guarantee what they are going to do. That the tubes in the prototype I have may probably not be a representative sample in terms of tube microphonics, or at least the manageability of such? Well, all I can say is that it's Schiit's ass on the the line and that I personally would give them the benefit of the doubt. For all we know, Schiit may do some sorting of the tubes themselves. Maybe Schiit is working on methods to damp microphonics before the production amps are being made? I don't know. I'm not privy to Schiit's engineering and production decisions.
What I don't understand is why you continue to sow seeds of fear and doubt when you haven't heard the amp, haven't handled the amp, etc. What is it? Are you are afraid this amp is going to hurt your business as an MOT or something?
I also don't understand why you continued to be so obsessed with this issue. As I've said already, the ringing / microphonics is not an issue after about a minute. Less so for insensitive cans. What are you trying to do is to create an argument against an issue which either does not exist or has already been acknowledged. (I think people can decide for themselves if they feel comfortable with the behavior of the tubes in the Vali; and I'm sure Schiit being Schiit will fully disclose the microphonics issue in a FAQ on their website.)
And you keep hammering on $5000 headphones $5000 headphones $5000 headphones. So what? First you say it's ludicrous, then you say you shouldn't have said ludicrous, and now you say it's incautious? Why is this incautious? Are you saying $5000 headphones must be used with $5000 amps? (I've lived with $5000 / $10000 amps, been there, done that.) What kind of nonsense is that? Or are you saying that Schiit should do a billet aluminum version with viscoelastic tube dampers and price the Vali at $2000? Would that make you feel better? Would that make it more acceptable for the praise I've put upon it?
BTW, I plan on using the Vali with my Abyss AB-1266 until I have something more suitable. (Unless Jason tells me it's dangerous.) The Mjolnir is currently tied up running speakers until I get my semi-custom EC amp in, which will be probably middle of next year, and Vahalla's output Z is too high. Yeah - you're probably gonna say I'm incautious too for running speakers from the Mjolnir.
The whole point of this is you're trying to excuse tube microphonics. Heck, you even suggest the microphonic ringing can add to the listening experience. Why don't you let the amp be announced on its own? Feel some obligation because you were given a privilege to listen to it before anyone else? Then show your testing plots, give your cautionary statements about the ringing and high output impedance (actually a false focus, IMHO) and leave it at that. But no, among other things, you have to claim that microphonics can somehow add to the listening experience (sympathetic microphonics?). Yeah, that's entirely possible ... but it's also entirely random.
I don't care whether the amp is good - it very well may be. I've stated before that Schiit is one of the best things to happen to Head-Fi and the headphone culture: affordable, quality amps and DACs. I don't doubt that the Vali is any different in its proper context. Instead, it's your gushing for a $119 microphonic amp and recommendation to pair it with $5000 headphones that has me troubled.
Just because I'm a MOT, it doesn't mean you can take cheap shots, either - even though you seem to fall back on that in every post. From my perspective (a formerly trusting one) you seem to enjoy a reputation of testing and measurement. Well, a responsibility goes along with that. For instance, why are you going to wait until "Jason tells me it's dangerous?" Does not the database of measurements that you produce tell you enough? Are you now stating that all of this thread is suspect unless "Jason tells me it's dangerous?"
EDIT: Sorry. That's more negative than just about anything I've ever said on Head-Fi. Mods, please delete if you think appropriate. I'm just a little crazy at the idea of tube microphonics becoming the norm for $5000 headphones.
Edited by tomb - 10/18/13 at 6:55pm