https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/ Guitar Noise Discussion Board en-US Thu, 04 Jun 2026 19:57:32 +0000 wpForo 60 https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/#post-136829 Sat, 05 Nov 2005 06:22:48 +0000 Live Sound Ricochet https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/#post-136829 https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/#post-136770 Sat, 05 Nov 2005 01:48:34 +0000 Live Sound Ignar Hillström https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/#post-136770 https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/#post-136571 Fri, 04 Nov 2005 01:37:43 +0000
I don't usually put my amp in standby during breaks at gigs, I just turn my guitar down.

I have never really noticed the tone changing over time. After maybe 2 minutes of warmup, the amp seems the same to me.]]> Live Sound Wes Inman https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/#post-136571 https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/#post-136287 Wed, 02 Nov 2005 17:36:27 +0000 Live Sound kingpatzer https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/#post-136287 https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/#post-136192 Wed, 02 Nov 2005 05:18:50 +0000 Live Sound quarterfront https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/#post-136192 https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/#post-135939 Mon, 31 Oct 2005 19:58:55 +0000 Live Sound Ricochet https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/#post-135939 https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/#post-135876 Mon, 31 Oct 2005 11:31:36 +0000 Live Sound sarton https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/#post-135876 https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/#post-135842 Mon, 31 Oct 2005 04:38:14 +0000
joe Wow! What a poetic tagline! Stolen for my sig, Joe!]]> Live Sound Moonrider https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/#post-135842 https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/#post-135824 Mon, 31 Oct 2005 01:19:04 +0000
joe]]> Live Sound forrok_star https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/#post-135824 https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/#post-135724 Sun, 30 Oct 2005 05:29:16 +0000
It's also a modern guitar amp myth that it's harmful to tubes to handle them. You'll never find that mentioned in any tube manufacturer's books on tubes or in electronics books from the tube era. It's a misapplication of a truth about halogen lamp tubes. They operate at higher temperatures than normal light bulbs, and use fused quartz envelopes.
The salts in perspiration, not oils from the fingers, react with the quartz at high temperatures producing soft spots with different expansion characteristics from the pure quartz and the envelope can break due to thermal stresses. Electron tubes are made of glass and don't operate at such high temperatures. Normal practice with tube electronics has always been to handle the tubes with bare fingers, except where hot tubes must be pulled out of operating equipment to change them on the fly, in which case they're pulled with tongs.]]> Live Sound Ricochet https://guitarnoise.forum/live-sound/tube-amp-warm-up-time/#post-135724