Topping estats amp EHA5 (details updated)

[rickler]

posted elsewhere direct from the manufacturer.

a90d circuit driving transformers.

Thank you for the reply @kevin gilmore! Senor Stax himself! Forgive my ignorance; what does that mean in general versus designs like the KGSS which, as far as I can surmise are designed without output transformers, and simply generate the appropriate voltages natively through their designs?

One thing that has been on my mind is the "Class D-ization" of electrostatic design, where a small, light amplifier can cleanly drive with very low distortion. It seems that the EHA5 is not this at all, but is there a reason why this concept does not happening in the TOTL electrostatic world?

 

[Soria Moria]

Halo Acoustics EH-1&EHA-1 Electrostatic HP&Amp Kit - L7Audiolab

台式设备 这个虹曙静电套装（ Halo Acoustics EH-1 ）是国内两个小鬼做的，记得差不多两年前他们就开始搞这个项目了，当时说的就是要做一个平民化的静电耳机。我其实听着是觉得搞笑的，静电还能平民呐？一个放都得多少钱了？想屁吃？结果果然他们以2999发售了这个套装：

www.l7audiolab.com

https://item.taobao.com/item.htm?spm=a1z10.3-c.w4002-24167365957.9.36951d3for1vOC&id=680685989700

That’s a beautiful headphone! If it performs well I’d love to own one.

 

[kevin gilmore]

class D making 2000 vppss. not any time soon. or ever.
full frequency range electrostatic output transformers are VERY hard. and quite large and stupidly expensive.
the lundhall's are $5k each. you need 2.
when square wave pictures of the topping are published we will know whether they know something that i do not know.
birgir will have his unit in a week or so.

 

[Svperstar]

I wonder if its possible to run the Koss estats with this. I thought about getting a Stax amp for my Koss 95X but someone talked me out of it. I use a little tube pre-amp I got off Amazon for $40 as the volume knob for my Koss cuz the knob on the 95X is so annoying.

 

[okok]

via tw

 

[okok]

some cracked down to do some teardown already, no need to do extra work
@kevin gilmore

 

[Hatto]

via tw

View attachment 279578
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I'm relieved to see there are no tubes in there. The main thing keeping me away from trying some expensive electrostats was poor technical specs of available energizers (wrt to price).

I wonder if those transparent "sails" are there just for show...

 

[kevin gilmore]

very nicely done for $400.

led's under the sails to make it look like there are tubes inside.

 

[AML]

Really want to get this, but want to make sure all Estat headphones will work, like Jade II's for example.

 

[ObjectiveSubjectivist]

I love how they added "tube" like glow

 

[kevin gilmore]

100 volts peak to peak 10khz square wave

 

[capetownwatches]

100 volts peak to peak 10khz square wave