amplifier with 2sk170 input stage

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Dear Sirs

Again I need some advice from you about an amplifier with 2sk107 input stage that I’m thinking to start. This kit called M7 in eBay. Please see the attachment of the schematic.

Is there any way to get a rough idea about quality and performance (THD) in this amplifier, if any body built this please share your experience about it’s quality.


Thank you for your precious time.
 

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It has the right bits in roughly the right places. There are a few very minor parts I would do slightly differently.

But you MUST:
Add MF and HF decoupling.
Allow for compensation components.

I would suggest you build it using a lowish voltage transformer fed from a bulb tester.
Try 22+22Vac or 25+25Vac or 28+28Vac.
Try as a single output pair until you fully understand how the compensation works.
 
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