Describe the sound of F3

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The one and only
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Every one of these amplifiers has different characteristics,
and I would categorize the F3 as having very fine midrange
and a sweet, slightly soft top end. It is not known for
having much punch and control on the bottom end, and has
a relatively low damping factor of about 8.

If you want more and better bottom end, you are probably
looking at an F5. Myself, I would consider bi-amping
the speakers.

:cool:
 
I have tested several modifications of F3 schematics and achieved more impressive bass by increasing an idle current and decreasing voltage amplification factor (increasing NFB) from 5 to 2.
As for improving highs, one may disconnect the chain for current source modulation, but this makes less bass at the same time.
If for Bi-Amping, I would definitely use F3 with disconnected modulation.
 
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