A question about the internal sonic effects in Al's theoretical 'some' preamps. Now if the actual electronics were creating the change. Then it would 'always' be one position which gave the apparent sort of signal. And the other position also would have a specific signal sound.
So if the differences do not follow the switch, but rather follow the source polarity.. Then the suggested problem almarg discussed does not exist in the preamp in question.
If on the other hand it did follow the switch, then yeah your preamp polarity switch is messed up.
I have several preamps into the main one. And one of them inverts. (Conrad Johnson ACT2) so with care adjusting the controls with the same signal to several, I can switch the main preamp fro the Threshold FET TEN to the ACT 2. inverting with the selector switch, let alone the Bryston polarity switch. No matter how it is done. the results match.
So if the differences do not follow the switch, but rather follow the source polarity.. Then the suggested problem almarg discussed does not exist in the preamp in question.
If on the other hand it did follow the switch, then yeah your preamp polarity switch is messed up.
I have several preamps into the main one. And one of them inverts. (Conrad Johnson ACT2) so with care adjusting the controls with the same signal to several, I can switch the main preamp fro the Threshold FET TEN to the ACT 2. inverting with the selector switch, let alone the Bryston polarity switch. No matter how it is done. the results match.