NJW Symasym - potential GB Interest

[Fabian85]

This will probably the last chance to get Rudi_ratlos latest iteration of Symasym boards as it will also be one of my last group buys for this. It's a great sounding amp, check on Forums for more information about it.

It's the latest version with 2 pairs of NJW output transistors. houses a speaker protect circuit (that does not have to be populated, but why wouldn't you). Board size is about 215x95mm. The board shares the option to power the front end of the circuit with a dedicated PSU by setting jumpers.

Price will depend highly on several factors as:

• Number of interested builders
• 1,6 / 2mm PCB
• Min. is HASL-lead free
• PCB color ;-)

I ran it through several well known PCB manufacturers and I came to about 14-15$ for a single board, not including taxes.

Please share your thoughts and interest that way. If enough people are interested, I will quote for the most requested.

#1 DIYAudio Name / Country / Qty of PCBs / Color (Green / Black / Red / something else) / Thickness (1.6 or 2mm) / HASL-Lead free or ENIG

 

[platon.rado]

Hi

 

[Fabian85]

Hi Platon,

it perfectly suits these critters or other variants, eg. 30 degree and so on. Spacing is 5.08mm, so choose whatever you like. I never had problems with DC in connectors ;-)

 

[platon.rado]

Ok

 

[pinnocchio]

@Fabian85
You stated a cap multiplier but I’m not seeing any pass transistors for it, looks like a simple linear psu to me. Maybe I’ve not looked properly?

Thanks
Do

 

[Fabian85]

You are right. The cap multiplier was on the black boards only. Not last revision. But this isnt going to happen anyway .

 

[pinnocchio]

Yeah, too bad, it is a very nice amplifier

Do

 

[Fabian85]

It is indeed. I built around 20-25 Symasyms in various variants for lots of friends. They are all happy. My poor ones are sitting without enclosure because I needed it for another amp 😂