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i installed many different op-amp types with additional changes for resistors and capacitors.
for now: if you want an audio path upgrade like the original 2600 (blue meanie) has installed, I can modify it in my labor.
i do not share this infos, because I don't want won´t see this solution in other big companies 2600 clones, I spend too much time in money in this analyzing and parts.
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