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Simple transistor mic pre-amp, 9VDC, 5-15mV rms to 300mW into 8 ohms

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Hi,

looks like good work and I guess rather good sound quality.

But you write "simple". Using a dedicated audio amplifier chip seems - to me - much simpler.

So I guess you have your reasons why you built it this way. Tell us about it.
Is it more because of sound quality ... or more because of the "discrete" design.


Thanks.

Klaus
 

Good old LM386 has considerably lower THD, 0.4 versus 5.7 %.

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