Tweaks of the high fidelity tuner Sony ST-S555ES
All electrolytic capacitors within the signal path will be either replaced
by MKT foil capacitors (where possible) or smaller MKT foil capacitors
will be connected in parallel to improve the high frequency behaviour.
The operational amplifiers within the AF signal path will be replaced
by better ones. The voltage/current converter in the output stage will
be removed as it makes the sound worse compared to a direct output.
An additional advantage in doing this is that the power supply branches
of the removed amplifier can be added to the remaining amplifier stages
leading to decreased influences of the AF signal on the power supply lines.
After these modifications have been done no further readjustments are
necessary. All component names refer to the
schematics and are also printed on the pcb.
All modifications are done on your own risk and lead to the cancellation
of any warranty.
See also the comments from people who did some of
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