I found a great on/off switch for preamp

[djn]

I came across this beauty on the net. Perfect look for my next preamp.

https://www.concordaerospace.com/pr..._id=23858254056730623&ad_id=23858257315860623

 

[wg_ski]

I want to use one of those “do not press this button unless you really really really mean it“ buttons. You know, the big red ones under a little plastic flip guard with a key switch next to it.

 

[djn]

Yes, the doomsday switch.

 

[djn]

 

[lakeside]

The illuminated push-button:
https://www.digikey.com/en/products/detail/nkk-switches/UB226KKW015C-1JC/1027511
The flip-up guard:
https://www.digikey.com/en/products/detail/nkk-switches/AT4142/1049347

 

[wg_ski]

Perfect for a preamp with about 40 tubes in it.

 

[Lampie519]

Only 18 in mine...

 

[wg_ski]

You need to add a graphic equalizer section.

 

[djn]

16 tubes on my Bruce Rozenblit OTL.

 

[mdpaudio]

I use those colored switch covers that are used as safety shields on stuff like nuclear missiles launchers! I got a bunch cheap but they were surplus and are long gone now. You can still find them retail. Look for spring loaded switch guards. They bring a mad scientist look to things.

 

[wg_ski]

And one of those switches needs to activate the Jacob’s Ladder…..

Bzzzzzt….. Bzzzzzt…… Bzzzzt…

Mr. Spock, I think you might have a connection burning….