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Old 6th August 2015, 05:57 AM   #11
jlithen is offline jlithen  Finland
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Join Date: Nov 2009
Location: Vaasa
I must say I am quite impressed with this amp.
After setting BIAS at 56-200mA per power FET I get this result.
(very unmatched BUZ23 pairs!)
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Old 7th August 2015, 06:31 AM   #12
jlithen is offline jlithen  Finland
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Join Date: Nov 2009
Location: Vaasa
Yesterday I got to actually listen to the amp

I would say stereo image was quite good and also had good depth after it warmed up.

I did not notice that power would be groundshaking but then again it was very pleasant to listen to.

I would say that hitachis J50/K135 application note amp is better and so are e.g. all designs from Pass.
But then again this is much better than, say, the 399 chepo amps from your local TV dealer. (at least the ones in Finland)

First impression was slightly worsened by the fact that amp was humming a little even with like 88dB/W speakers. Might be due to the terrible wiring

I need to remove all junk from the box and redo the wiring.
I will also add DC protection, this one only has delay on the speaker relay.
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