Low hum from amp

Hello

I have a low hum coming from my integrated amp.
When I turn up the volume, the hum does not get louder but stays at the same pitch.
Any ideas please as to what's causing this?
Thanks!

greh03-12-2020 10:15am

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dweller Details Discussions Posts This discussion Message User 3,735 posts 03-12-2020 at 11:12pm Copy Comment URL Report Comment Edit Delete "the hum does not get louder but stays at the same pitch." It stays at the same "amplitude" or level (or volume or loudness) not "pitch". Pitch is different than loudness.
rms456 Details Discussions Posts This discussion Message User 37 posts 03-13-2020 at 02:51am Copy Comment URL Report Comment Edit Delete When did this start?
helomech Details Discussions Posts This discussion Message User 1,495 posts 03-13-2020 at 06:23am Copy Comment URL Report Comment Edit Delete Rogue?
roberjerman Details Discussions Posts This discussion Message User 4,319 posts 03-13-2020 at 10:16am Copy Comment URL Report Comment Edit Delete 60 hz hum from a deteriorating power supply cap.
greh OP Details Discussions Posts This discussion Message User 134 posts 03-13-2020 at 10:42am Copy Comment URL Report Comment Edit Delete My amp is a Manley Stingray. When I first power it up, the hum isn't audible until I'm about 30 minutes into listening. Thank you dweller for the correction.

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