The amp should be just fine idling for 4 hours won't hurt it. Not sure why the red light came on but if it's performing fine and continues to I wouldn't worry about it.
Willsenton R35i Integrated Amp with EL34 tubes
When I turn my Amp on there is a 30 second delay from red to green light....Ready to Play.
Today, I left my Amp on... IDLE for 4 hours. Green light was on....but after 4 hours the light became red ,.... as if it went into protection / relay mode.
When I turned it back on, it went back into green and played fine.
My question: Is this NORMAL?
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