Maybe the current design of the Saga+ gives extra problems when switching the tube power, but all tube power amps switch on and off by switching the primary transformer power.I admit I am still working on building up my electrical engineering understanding, but I look at this comment from Jason about turning off the tubes:
You may have a better understanding of this than me, but it seems they tried simple, found issues with it, and their work around was a bit more involved.
I thought switching to passive mode meant to interrupt all leads going to the tube/ input and output...
Maybe this is not done in the Saga+?
However i can understand the need to avoid a switching click and to mute the output first.
The remark about the grid DC anomaliesI do not understand because if you switch the DC power of filament and anode the tube has not power and therefore can not generate DC voltage on the grid.
Switching the transformer might however.
Last edited: