#1
Hey I noticed these amps don't have a standby switch.. this means the power goes directly to the tubes once it's turned on... does this mean they will die faster?

thanks!
#3
If the tubes die early, it's more likely from the amp being particularly hard while running the tubes. Standby switches aren't entirely necessary, especially on EL84 amps.
#4
There are about 50 different ways tubes wear out and die. One of them is called "cathode stripping", which is what happens when you turn the main power on w/o letting them heatup first (using a standby switch to accomplish this).

Lacking a standby, will it speed up the failure by cathode stripping? Yes. Does it matter? No, because the tube will die because of something else a long time before cathode stripping ever does it in.

Personally, I don't like standby switches because noone uses a switch rated at 500 volts or whatever the B+ is, so the switch is something of a weak-point in the power supply.
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