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Comments
A correctly sited standby is useful and can extend power valve life a bit, depending on how hot the amp runs at idle - better than a thermistor.
The standby needs to be after the first filter cap, not before it or in the centre tap connection of the PT.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Just because I don't care, doesn't mean I don't understand." - Homer Simpson
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Absolutely agree. Yes I know "they" fitted them to the A series but I wish they hadn't. Still, it would I think be hard to sell a "classic" handwired all valve amp without one!
FYI the HT-5 opens the AC feed to the sstate bridge and the rest of the HT and S1 series just slam -100 volts or so on the power valve grids.
Dave.
Bandcamp
Spotify, Apple et al
I still think that turning the HT off is the best method because it can help with troubleshooting and makes it safer to work on the amp. It's not just a mute switch.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Just because I don't care, doesn't mean I don't understand." - Homer Simpson