finally finished...., all recycled, handmade boards
very good sound
Can you post front side picture?
my custom Honey 🙂 I just add the RCA 😛
Looks good, except you have them pointing the wrong direction.😀
Here's now I did my NS-OPS boards. The RCA connector mounts to the rear panel, so there's no input wiring inside the chassis.
Attachments
Hi,
Here's some images of my USSA2 amplifier. It is a fantastic amplifier and the design is from Fab (on this forum), a highly respected amp designer on the French Canadian forums.
You can find the schematics here for version 1 but version 2 is easy to change to:
Amplificateur USSA 15W - Conception
You can find the schematics here for version 4 which I'm currently working on :
Amplificateur USSA-4 : hybride entre version 1 et 3 - conception
The build manuel is in English and can be requested to Fab
Ciao!
Do
Here's some images of my USSA2 amplifier. It is a fantastic amplifier and the design is from Fab (on this forum), a highly respected amp designer on the French Canadian forums.




You can find the schematics here for version 1 but version 2 is easy to change to:
Amplificateur USSA 15W - Conception
You can find the schematics here for version 4 which I'm currently working on :
Amplificateur USSA-4 : hybride entre version 1 et 3 - conception
The build manuel is in English and can be requested to Fab
Ciao!
Do
I see you are using toroidal transformes from SumR - Richard Sumner Technology.
What are their prices?
What are their prices?
Beautiful!





Hi,
Here's some images of my USSA2 amplifier. It is a fantastic amplifier and the design is from Fab (on this forum), a highly respected amp designer on the French Canadian forums.
![]()
![]()
![]()
![]()
You can find the schematics here for version 1 but version 2 is easy to change to:
Amplificateur USSA 15W - Conception
You can find the schematics here for version 4 which I'm currently working on :
Amplificateur USSA-4 : hybride entre version 1 et 3 - conception
The build manuel is in English and can be requested to Fab
Ciao!
Do
I see you are using toroidal transformes from SumR - Richard Sumner Technology.
What are their prices?
I believe they were around 115$ CAD each
They're 300VA each with shield and core band, four secondary (2x 20.4Vac 280VA and 2x 12.9Vac 20VA)
Beautiful!![]()
![]()
![]()
![]()
Thanks! I'm really pleased with this amplifier, sounds really good!
Looks good, except you have them pointing the wrong direction.😀
Here's now I did my NS-OPS boards. The RCA connector mounts to the rear panel, so there's no input wiring inside the chassis.
yes I know, I just figure that out 😛 lol
I have plans to order my own power supply design is just a simple one, what you guys think ? 🙂
Nice PCB but I discovered that they can be made point to point in 3D and they save a lot of space that way and work great.
This one is about 1/3 the real estate it would have taken on a PCB. These are all 4700uF caps and the whole thing is tiny.

Attachments
I have plans to order my own power supply design is just a simple one, what you guys think ? 🙂
Nice work Juan...as always.🙂
I built a whole preamp on itself, including PS.
BoZoaC - Bride of Zen on a Cap - DIY Audio Projects Photo Gallery
BoZoaC - Bride of Zen on a Cap - DIY Audio Projects Photo Gallery
Nice PCB but I discovered that they can be made point to point in 3D and they save a lot of space that way and work great.
This one is about 1/3 the real estate it would have taken on a PCB. These are all 4700uF caps and the whole thing is tiny.
Awesome design! Point to point is a good choice sometimes.

I have plans to order my own power supply design is just a simple one, what you guys think ? 🙂
I would be interested in a few of these boards... 😀
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