@audiotroy
1. Mondial magic isolator already installed.
2. Will have to check dimmers but usually lights off.
3. Floated ground at wall and at power conditioner.
4. Hum is present regardless of whether other components are on or off.
5. Will try, thx.
6. I/Cs have no impact.
@almarg- @almarg- forgot about that; will swap out 6SN7s one at a time. Thx.
Have not tried lifting ground on preamp but the passive is a 2 prong plug so methinks that may not be it.
1. Mondial magic isolator already installed.
2. Will have to check dimmers but usually lights off.
3. Floated ground at wall and at power conditioner.
4. Hum is present regardless of whether other components are on or off.
5. Will try, thx.
6. I/Cs have no impact.
@almarg- @almarg- forgot about that; will swap out 6SN7s one at a time. Thx.
Have not tried lifting ground on preamp but the passive is a 2 prong plug so methinks that may not be it.