Unloaded output

butchbass · 2162

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Offline butchbass

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on: June 08, 2017, 07:56:48 AM
I read on Audio Asylum that operating a tube amp with no load connected to the output can mess up the tubes. Why is this?
This would mean that an A/B switch would need to be make before break?

Butch Gross
Stereomour II/  Blumenstein Orcas, Dungenes/Schiit Bifrost Multibit/Amarra

Offline Doc B.

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Reply #1 on: June 08, 2017, 08:28:10 AM
Don't believe everything you read on AA. If an amp has lots of global negative feedback it might go into oscillation with the output load removed. If an amp does not use negative global feedback this is not an issue.
« Last Edit: June 09, 2017, 09:13:09 AM by Doc B. »

Dan "Doc B." Schmalle
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Offline butchbass

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Reply #2 on: June 09, 2017, 08:39:18 AM
Thanks Doc.

Butch Gross
Stereomour II/  Blumenstein Orcas, Dungenes/Schiit Bifrost Multibit/Amarra

Offline xcortes

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Reply #3 on: June 09, 2017, 10:56:20 AM
I only have blind faith on PJ's posts.

Xavier Cortes

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