Great news! I don't think there is anyone here, who hasn't made the same mistake at least once if they have built more than a few amps. Glad it all works now. Maybe you can tell me how that FH9HVX sounds with this pre driving it.


I was in the presence of a very experienced and technically savvy person when he made that same mistake. He was really embarrassed but had to laugh...
It just happens
It just happens
The ACP+ and ground plane are both now available for purchase in the store.
This is great news, awaiting pics. 🙂
HI, do you have a proven version ?
maybe a balanced version ?
thanks
i need a balanced gain stage for this output stage :
https://circlotron.audio/sites/default/files/2020-09/RADIUS_2020.png
I would like replace the opamp gain stage
best regards
Sébastien
maybe a balanced version ?
thanks
i need a balanced gain stage for this output stage :
https://circlotron.audio/sites/default/files/2020-09/RADIUS_2020.png
I would like replace the opamp gain stage
best regards
Sébastien
Last edited:
The ACP+ and ground plane are both now available for purchase in the store.
Do you have any pictures of the ground plane?
Uh oh, computer says no.
This order can’t be shipped to your location. Contact the store for more information.
This order can’t be shipped to your location. Contact the store for more information.
Sorry guys, the shipping calculation had a problem which was not detected by the usual checks when setting up the product. Please try again in 30 minutes time (allows some time for Shopify caches to clear).
Do you have any pictures of the ground plane?
Pictures will be up in a few days.
I ordered the boards from the DIY Audio Store.
Should I have ordered the LSJ74 matched quad as well? What about J113 and IRFP610 - any matching requirements for them?
-Tom-
Should I have ordered the LSJ74 matched quad as well? What about J113 and IRFP610 - any matching requirements for them?
-Tom-
I believe I read that the store boards were the same format as the BAF boards. If that’s the case, will there be a corresponding chassis available? They appeared to be made with a certain configuration in mind.
I believe I read that the store boards were the same format as the BAF boards. If that’s the case, will there be a corresponding chassis available? They appeared to be made with a certain configuration in mind.
The original BAF boards with the ground plane were designed to be chassis free. I did place one in a chassis I found online.
Ah, that makes sense. It looked like someone (maybe you?) put it in a 1U modushop chassis with really good outcome.
I’m looking primarily for a headphone amp with 2 single ended inputs and a fixed line out. Is there an easy way to fix the output of the ACP+?
- Home
- Amplifiers
- Pass Labs
- Amp Camp Pre+Headphone Amp - ACP+