[jdkJake]

IMHO, I still believe that is too much transformer. The 50VA Avel puts out 830mA. Less than half of that is more than plenty. 
 
If you are going to buy an Avel, why not use the 30VA Y236107 that Alex recommends on the EHHA Rev. A BOM? As Sachu points out, you can probably get by with the 25-0-25 part as well (6106).
 
Unless you are building a four board solution, 30VA is plenty, especially for the Avel product.
 
 
EDIT: Just to be clear, since you have referenced the sigma22 web site, this amp has it's own built in power supplies. Unlike the original EHHA, there is no sigma22 required for the Rev A version.

 

[BoilermakerFan]

Or bump the PS caps up a bit and just have more power on tap, run bigger 2-1/2" heat sinks and bias up to 200mA. 

 
A couple of resistors may have to go from 1/8W to 1/4W or 1/4W to 1/2W, but not a big deal to have more reserves if you're driving orthos. 

 

[Lil' Knight]

Quote:

 
EDIT: Just to be clear, since you have referenced the sigma22 web site, this amp has it's own built in power supplies. Unlike the original EHHA, there is no sigma22 required for the Rev A version.

Of course I know this.
 
Just mentioned about the 50VA because GlassJar has it and if it works, I'll take it along with the boards.
 

 

[sachu]

I do have 6800uF caps on mine, that helps to bring down the pre-reg voltage down by a volt or two. But still with 30-0-30 transformer with a 115V primary winding will show close to 46V pre-reg unloaded. With the hammonds that are rated at 28-0-28, a 115V primary winding and 6800uF rail caps i see 42V pre-reg unloaded. I need to take some measurements with the PSU under load. Will do that shortly and post them.

 

[jdkJake]

No slight intended Lil Knight, just wanted to be sure we were on the same page. 
 
For reference, recall in much earlier posts (~#854) that stringgz is using the 30VA Avel:
 
   Stringgz is using a 30-0-30 .5A Avel Lindberg and is sitting at 38.2V (120.8VAC line in)
 
I guess it all depends on how close to the standard build you want to go with and what your line VAC is expected to be.

 

[egotrip]

Little bit OffTopic.
Has anyone speaked to Jeff? (mail etc.)
trying to contact him regarding an order.
 
back OnTopic.
This amp looks promesing. Maybe i'll order a kit when I am done with my oncoming amp.

 

[arteom]

Any chance we can get a comparison in sound quality of the Rev A and original version of the EHHA? 

 

[johnwmclean]

 
Quote:

Little bit OffTopic.
Has anyone speaked to Jeff? (mail etc.)
trying to contact him regarding an order.

I contacted him a couple of days ago, he may take a while to get back to you when he’s busy. 

 

[Lil' Knight]

Quote:

Little bit OffTopic.
Has anyone speaked to Jeff? (mail etc.)
trying to contact him regarding an order.

I ordered the boards from him like 4 or 5 days ago but haven't got shipping notice from him yet. Busy as usual.
 

 

[Lil' Knight]

Quote:

 
I guess it all depends on how close to the standard build you want to go with and what your line VAC is expected to be.

Oh I forgot to mention, my AC mains is 230V.
 

 

[jdkJake]

Is your line voltage closer to 230 or 240VAC?

 

[Lil' Knight]

Much closer to 230vac.

 

[stixx]

 
Quote:

I ordered the boards from him like 4 or 5 days ago but haven't got shipping notice from him yet. Busy as usual.

Ordered mine about a week ago and got a shipping notice yesterday (to Germany).
So he's busy fulfilling all the wishes of them impatient buyers...

 
 
 
.

 

[egotrip]

I order Saturday 2 weeks ago.
I guess he is waiting for all the parts for my kit, but a simple answer to my mails would be great.

 

[stixx]

It is quite usual that small business's like Glassjaraudio (probably just Jeff himself) do have to do
everything by themselves... like ordering, sorting, packing, shipping and so on. Then they simply
have no time left to also answer ALL the emails...