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AAK 20th May 2012 04:50 PM

SymAsym boards and amps for sale
2 Attachment(s)
I have four of my original SymAsym boards, two Rev_1.3 boards, and four Rev_1.4 bare boards for sale.

The original boards have a single pair of outputs transistors, Rev_1.3 and Rev_1.4 have two pairs.

I'm asking $12.50 for the original boards, and $13.50 for the Rev_1.3 and Rev_1.4 boards.

I also have two pairs of assembled and tested SymAsym prototype boards for sale. One pair has Buzz lateral mosfets outputs, and the other Toshiba Bjt outputs. The amps have some slight modifications but operate and measure as well as the professionally made boards.

I'm selling each amplifier pair for $70.00 not including shipping.

Here some links with more information.

Original boards.

Rev_1.3 and Rev_1.4.

Here's some pics. Thanks!


jmillerdoc 20th May 2012 06:31 PM

Email sent....

AAK 24th May 2012 02:00 PM

The mosfet amp has sold.

I still have a the bjt amplifier and boards available. I also have two more fully assembled stereo SymAsym amps with a single pair of bjt outputs, and two bjt outputs pairs on the way. The two output pair amp is a Rev_1.4 prototype board without the on-board PS.


AAK 26th May 2012 07:16 PM

The bjt amp has sold.

jmillerdoc 30th May 2012 03:46 AM

Modules recieved...these are well constructed with exceptional part selections...a bargain at the asking price....not sure why the others havent sold yet...these are a steal for anyone following here....

Dale, Muse, silver micas, etc, etc...very well done indeed, cant wait to hear them.....

I am going to need a little assistance with the outputs...which is which...ground and out?

Also, you mentioned possibly putting a tube buffer in you have a design schematic for that? I would be very interested in seeing it...
Thanks again for the great deal and excellent packing!

gaborbela 30th May 2012 05:25 AM

PM sent...
Greetings Gabor

AAK 1st June 2012 01:58 PM

Hi Jeff,

The speaker ground is the terminal near the PS caps. The speaker out is the terminal near the center of the board. If you need more assistance let me know.

Best Regards,


AAK 1st June 2012 01:59 PM

Two Rev_1.4 have sold, still have two left.

AAK 8th June 2012 02:08 PM

I have another SymAsym stereo amplifier pair available.

The first one has a single pair of output transistors. The amplifier circuit is basically the same as MikeB's original 5.3 design except I used a cascoded bjt jfet input front end. I'm asking $70.00 dollars for the pair.

The second amp is a Rev_1.4 with two output transistor pairs but without the power supply section. I'm asking $75.00 for the pair.


gaborbela 15th June 2012 01:43 AM

Hello Al
I got the boards today, thank you!
For PS 4700uF caps which would be better Elna for Audio or Nichicon KG.
Thank you.
Bump for your sale..
Greetings Gabor

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