spritzer

Happy Birthday!!!!

Happy Birthday!!!

Yup, HEV70 utter crap and it also breaks down far too often (at least the early units). Give them ample power and the headphones are transformed.

Not a bad idea but no, it's a new amp/preamp design to celebrate the SRA-6S, the first high end Stax amp. I'm working on a prototype with tubes you've never seen before and are very cheap in a circuit similar to a mini WES or a balanced HEV90. Nothing is set in stone yet but the plan is to have the PCB's available and if I can get somebody locally to make me a chassis, build a few amps including one that I'd send as a gift to Stax. The main problem I have is the tubes are very hard to work with (i.e. I need to compile some of the data myself) and I really need a clone to get all these projects done.

The direction of the power plug is crucial as the power systems aren't star wired anymore. With it pointing in the right direction you shouldn't get any hum so I'd test the bias supply with the transformers in the circuit and see what happens. As for measuring the bias, you need a VTVM to accurately measure it since the impedance is so high.

I mean one would have to search mouser, digikey, Allied etc. and that takes a lot of effort...

Well that and the 50th anniversary of the earspeaker. Plans are already in motion to celebrate it...

Naturally, 2010 is the year of Stax.

By using transformers to perform phase splitting then it should work.

I find that no cable gives me the best sound with some headphones...

I just looked at all my pics of SRA-14S amps and sorry, no detailed internal pics. It did how ever confirm my believe that your particular amp is a prototype as it lacks all the ususal markings found on all Stax amps such as the full company name, input voltage and Made in Japan.

Bugs me too, don't know why...

I do hope they release it soon as I wouldn't mind a set too.

Great news but are they going to make this any time soon? The small sub-sat speaker still hasn't reached production status...

Happy new year everybody!! About 30 minutes left to go here and the sky is already lit up and will stay so until well past 1am.

I think he sold his set.

Way too cool!!!

Happy Birthday!!!

Agreed, brilliant series.

Even I have that SACD and I'm nothing more then a casual fan.

Shhhh Marc, it's all magic!!!

Happy birthday!!! I made you some honorary baguettes but then I sold them all...

I have about 1200 CD's, 300 LP's and had a bunch of DVD's but I gave them all away just before Christmas. There is also a lot of music on my home server.

Happy Birthday!!!

Hell yeah!!!