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Technics ST 9038 Opamp experiences

Howdy everybody..,

I've owned this tuner for a year and a half now and like it a lot. I've owned
quit a few
tuners over the years and this Technics is, although not as good as my formerly
owned
Tandberg 3001, a very satisfying tuner.
However, I wondered how to improve it and found the comments made on TIC:

"Well, I had to know. Was there something special inside the ST-9038? First, it
was a pain
to get into - pretty tricky, and the ribbon cable is soldered in so you have to
be very
careful in there. The something special I found was a very short signal path
from the audio
op-amp to the output jacks, followed by bipolar 3.3 uf caps, followed by muting
transistors. These were not directly in the signal path. The not-so-special was
the 4558
op-amp and steel leads in the coupling caps. I think the short and sweet signal
path was
part of the magic at the lows and highs, but the 4558 op-amp caused the not-so-
wonderful midrange when the ST-9038 was thrown up against the L-02T or the
Luxman
T-117".

I've taken off the lid and found only one 4558 op amp.., can anybody confirm
there is only
one 4558?
Does anyone have any experience with changing the 4558?.., and what type did you
use?
What were the results?
Other suggestions to improve this tuner are welcome too.


Thanks a lot..,


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Topic - Technics ST 9038 Opamp experiences - Snake64 11:47:51 10/02/06 (1)


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