Quote:
Originally Posted by Craig Sawyers
And sure the noise was higher, but still OK as compared with noise from the vinyl itself.
Craig
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That is the key.
You can never make anything completely noise-free. All you have to do is make the noise low enough that it isn't significant compared to the noise implicit in the incoming signal.
The problem with RIAA input stages is that the record surface noise isn't there when the stylus is raised and people notice noise from the electronics without the surface noise to compare it against.
The P40 input stage was rather elegant in how it handled overload margin, but it had a couple of inconveniences that could have been fixed if needed. The Japanese designers took an alternate approach and used remarkably high supply voltages for their preamp stages.
David