[electrathecat]

This is admittedly a silly question and I'm pretty sure the answer is obviously no, but has there ever been a portable (i.e., battery-powered) electrostatic amp?

Seems unlikely, but you never know the ingenuity of headfiers!

 

[MaloS]

Stax SR-001mkII is the only portable electrostatic system. If you want that sound on the go, its your game, quite cheap too, and rather small.

 

[dcfis]

I thought the 005 and Koss could be battery powered too, though not as portable

 

[MaloS]

You could always carry a battery-pack in your backpack

 

[kevin gilmore]

If someone in Colorado (hint hint) would actually send me
the transformer they have promised me for 5 months now, there
would be a DIY electrostatic portable.

 

[Hirsch]

Stax SRM-X Pro actually used to have a battery pack as an option, so there was actually a commercial battery-powered electrostatic amp at one time. Play time was only about 2.5 hours, apparently. However, I've got the amp, which does have a 12v input, so a DIY battery pack should do the trick, and probably play longer to boot.

Incidentally, this amp is a bit smaller than HEV70, but makes a much better combination with HE60 than its own HEV70 amp. I suspect that the higher bias voltage of the Stax amps may help what I hear as a synergy between Stax amps (007t and SRM-X Pro both) with HE60. I'm listening to the combo as I type.

 

[krmathis]

Quote:

Originally Posted by kevin gilmore /img/forum/go_quote.gif If someone in Colorado (hint hint) would actually send me the transformer they have promised me for 5 months now, there would be a DIY electrostatic portable.

Damn! That some lousy customer support.
Sure hope you receive the transformer soon, so you can finish the construction part.

 

[urs]

This SRD-X Professional energizer is "sort-of portable" - it's not really a pocket modell, however.
It can be operated with a power pack or normal batteries...and it has a Pro outlet of course

http://www.simplystax.co.uk/heritage...tml?prod_id=70

Regards

Urs

 

[Hirsch]

Quote:

Originally Posted by urs /img/forum/go_quote.gif This SRD-X Professional energizer is "sort-of portable" - it's not really a pocket modell, however. It can be operated with a power pack or normal batteries...and it has a Pro outlet of course http://www.simplystax.co.uk/heritage...tml?prod_id=70

Wrong product. It's this one:

http://www.simplystax.co.uk/heritage...tml?prod_id=76

Although the site expresses doubt, this unit does in fact have a pro bias output.

 

[spritzer]

You are both right. The SRD-P had an internal battery compartment, a TRS plug for input and a normal plug. Later came a version with both outputs and there was even a version made specially for the Church of Scientology. A few of them were on ebay a year or so ago. The SRM-X was designed for remote monitoring and thus the separate battery back.

Please not that the Simply Stax site is far from a great resource and is more often wrong then right.

 

[justhavingfun]

KOSS ESP950/E90 has option of battery powered headphone system. I bought this system somewhere around mid 90's and still enjoys occasionally. Great sounding to my ears.

 

[Carl]

Quote:

Originally Posted by kevin gilmore /img/forum/go_quote.gif If someone in Colorado (hint hint) would actually send me the transformer they have promised me for 5 months now, there would be a DIY electrostatic portable.

If you ask Alex (AK[Zip]) he might build you a transformer in exchange for your design schematics.

 

[electrathecat]

Why do you use the Stax SRM-X Pro over another
ES amp like the Stax SRM-007t? Is it just easier to lug around to the office, etc.? I just got an HE60, and I gotta say the HEV70 is pretty disappointing -- I'll likely be looking for some kind of upgrade soon.


By the way, I'm from Rockville too. I grew up there, and attended the same high school (Woodward HS) as the diaper-wearing, "Houston we have a problem", astro-nut stalker chick. Don't remember her, but her sister was cute.

 

[Carl]

Quote:

Originally Posted by electrathecat /img/forum/go_quote.gif I just got an HE60, and I gotta say the HEV70 is pretty disappointing -- I'll likely be looking for some kind of upgrade soon.

Wise words indeed.

For a bit of fun, try running an Omega II off that sucker. The result is laughable.

 

[Hirsch]

Quote:

Originally Posted by electrathecat /img/forum/go_quote.gif Why do you use the Stax SRM-X Pro over another ES amp like the Stax SRM-007t? Is it just easier to lug around to the office, etc.? I just got an HE60, and I gotta say the HEV70 is pretty disappointing -- I'll likely be looking for some kind of upgrade soon. By the way, I'm from Rockville too. I grew up there, and attended the same high school (Woodward HS) as the diaper-wearing, "Houston we have a problem", astro-nut stalker chick. Don't remember her, but her sister was cute.

I don't like to leave gear in my office. At home, I use a Singlepower ES1 and a Stax 007t. They're a lot less portable, though

The SRM-X Pro really benefits from having a bigger, stiffer power supply on it than the standard wallwart.

I went to Walter Johnson HS a few years earlier. Woodward is just a little ways up Old Georgetown Rd.