spritzer

Now that I've looked over the files I'd recommend highly against using this. Works just fine but it has all the problems of the first run of KGSSHV psu's so the odds of it going arcy sparcy are huge. I'm not going to spend one second fixing them either. I'd just use the current HV psu and add a separate delay line.

No problem supplying you with the Gerber files but this has never been tested.

It's the same thing as the KGSSHV but with two things added, a C- supply for amps such as the BATE and ESX and it has a delay circuit as well. That PCB is huge though...

Happy Birthday!!!

It was a joke given the crap LFF puts out...

Given how heavily censored I am at a certain other site there can be a counter argument to that...

Hifi News also has great measurements for DAC's so that's not really needed. They also measure headphone amps but only the UK stuff. Meridian Prime in the next issue but we all know it is shit...

I'm sure we can rustle up some crappy amps to measure against the good stuff.

Happy Birthday Ken!!

It can handle the short circuit for brief moment just fine. The Krell amps all shipped with TRS sockets...

The mafia obviously... I do think Tyll won't have it easy measuring amps as the worst offenders would never send their stuff in. Then we have the idiots who think there are some gray areas in amp design who will dismiss the good performers as missing "the magic". Now if Tyll can shame those that won't have their gear measured to do so then we would have real progress. I do think that the shills on HF will not take kindly to this though...

There has to be a better word than fragile but basically if the B22 shorts at any time then it roasts half the output stage. This makes TRS plugs almost impossible to use. KGSSHV, yeah the first ones were not user friendly but then again, nobody has ever made a mass DIY project at +/-500V so there were bound to be some issues. Still the final version (v1.0) of the PSU is promising.

Merry what ever suits you!!!

Now if we could only bring people to take amp measurements seriously too then we'd be golden. Perhaps it is time to put together something like this for amps based on the data we have at hand. I know the shills on HF wouldn't like it one bit.

I don't have allergy to RSA amps, I just happen to not like 20% THD from a headphone amp. Kinda defeats the purpose of one when all it does is limit volume and add distortion. The HD800 is picky but being used to the SR-007Mk1 I can't say that it's a bad thing. They simply need a good, stable amp to drive them which can handle the quirky impedance behavior. Now this excludes 95% of the amps out there so people swing the other way and use badly designed garbage such as the Alo Studio Six and Leben to mask what they find offensive in the transducers character. One could argue that this is defeating the point of buying them in the first place though... It's the same crap as with the 009, so many think that simply adding distortion will fix what they find wrong with the transducers.

So here are the facts, that SRM-T2 will die just like all the other ones and there are no spare parts and no way to fix it. There are quite a few dead T2's out there... It's performance is in no way comparable to the DIY version, I'd take a Blue Hawaii over a stock T2 in a heartbeat. That hum drove me mad, it gets silly hot and the input switching is very annoying. So for roughly 17K$ (this was through Kubo so there are fees on top of the sale price) it's a pretty crap deal.

So who else besides Tyll has measured the ESP950?

I'd gradually build up to something like the Dynahi, not jump in. The B22 is fragile so be prepared to to some error checking which is arguably the hardest part of DIY.

Bypass the e24 and try it with a switched extension cord instead. This is the main reason why I use latching switches instead, I despise relays... Most likely the PSU. A spec of dust can always cause a brief short to ground which could account for the pop. The amp should under no circumstance cause damage to the phones. We made sure of that but there is always that one time...

Indeed... There is though that I stumbled across earlier: http://www.aliexpress.com/item/Teflon-Chassis-Jack-for-Stax-Headphones/1386475435.html

Nope, some CGI firm did it.

Aside from the CCS stuff then it would be easy to simply wire up. I also have a less insane version of the Megatron on the back burner with SS CSS and a simplified input stage. Pretty much a ESX maxed out...

Yup, do not use the uninsulated diodes.

Those are probably bias related issues. If they aren't charging properly then you can get audible distortion. Other cause for this is not good... the diaphragms are burnt up quite badly.

Look up the Firstwatt F5 amp design to see how it should be used. It's role is to limit the inrush current as the amp is switched on. You need one for 230V and two for 117V.