I am currently using a vintage Adcom 555 pre-amp in a simple stereo set-up. On the rear of the pre there is a switch with three settings : Capacitance 55 pf 175 pf 235 pf What are these settings for? Yesterday I set the switch to 235 pf from 55 pf where it had been set for almost a year unnoticed. And, it may be my imagination...as it sometimes is with the 'audio' senses , but it really seemed as if the sound opened up a bit when I moved that switch to the 235 pf position. Somebody please help me understand.
That switch probably has to do with phono cartridge loading. As such, it should not affect the line section or any other input in the least. That is, if it is properly designed. Sean >
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