spritzer

That is the usual Cavalli BS. No way that the distortion+N is that low. I could test it but I kinda broke the tube when inserting it into the amp. I did order some new ones...

2SA1831 or 2SA1967?

Class A or death!!!!

White PCB's are an utter pain. I switched over for a while and...quickly went back to green. High gain and no NFB is a really, really bad idea, you need to stabilize the circuit. Whether this has enough gain, I'm not sure.

I hope they aren't sourcing resistors from the Shengzen market for a 50K$ setup. Well knowing Hifiman that would probably be the case... Seriously, how much would the upgrade cost be to teflon tube sockets?

In reality this is never needed if the resistors are the right type for the job. PRP crappy engineering non-withstanding...

You terrible tempter you!!! That just can't be with their stellar report of excellent build quality!!!

That cable just makes me cringe... was there nothing else available except cheap techflex?

Somebody in China tries to make a clone and fails...

Not nearly enough voltage to do something like that. 600V isn't fun but compared to a taser it is almost nothing...

Ahhh indiegogo...home of all the really, really legitimate shit.

Sunlight and thin plastic membranes don't mix but they are pretty resilient otherwise

It's finally ready...only after two years... https://www.head-fi.org/threads/stax-sr-002-srm-002-and-srm-003-mk2-srm-003-impression-and-appreciation-thread.631894/page-32#post-12238152

There are only 300 of the amps and 800 headphones so this seems like a dealer BS to me.

So PEEK...

Stax have never said what the diaphragm is but they might have moved away from mylar. Plenty of new materials to play with these days...

I'd just go with Mouser.... https://www2.mouser.com/ProductDetail/Metcal/PS-900?qs=sGAEpiMZZMtV0HPngiEil%2frl7NJWznw4

You need to compare the results as a voltage divider so one end to wiper and then the other end to the wiper.

So the electrons don't fall out?

Nothing wrong with a magical potato... Do check out the updated schematic Kevin posted above and see if this makes any sense to people. This amp is such a pile of shit that it isn't even funny but how much do you want to bet the Liquid Crimson at nearly 3K$ was exactly the same? Fully single ended with a single 6922...

Metcal is always the way.

Those are my pics so who knows what the fuck they are really selling...

What's up with those V-caps? The circuit is fully DC coupled so special insanity? I do like the cloned chassis though... As it turns out I have my fans as well... https://item.taobao.com/item.htm?spm=2013.1.20141002.7.7fbc42fdH73z3A&scm=1007.10009.70205.100200300000001&id=543961961161&pvid=4b6da6a3-603d-4eba-962f-6f36272bacf7 https://item.taobao.com/item.htm?spm=2013.1.20141002.5.7fbc42fdH73z3A&scm=1007.10009.70205.100200300000001&id=563080882986&pvid=4b6da6a3-603d-4eba-962f-6f36272bacf7 Even fake circuit boards as I never released the mini boards. Those are completely wrong but since when has that stopped anybody...

I haven't spent any time comparing them but this R2R seems to be a very different animal. It also goes through the main amp all the time as the gain switch is active even in fixed output mode.

It's about 15W continuous. Yeah, that might work. This is an R-core though so I could have cut a hole and fitted the bracket underneath the chassis but in the end two washers did the trick. It's really hard to get HV transformers which don't suck and are less than 40mm tall...