What about the EL84 tubes? Have you replaced them?
Sudden Loud Buzz on my Tube Amp
I have a Luxman SQ-N100 integrated amplifier (12 watt EL84 based) that has just begun to intermittently buzz at a high volume.
The tubes all look good -- I added two NOS Raytheon 12au7 tubes a month ago, but doubt that's the cause.
I can't predict when it will buzz, but it's very loud and the volume control has no effect on it. If I turn off the amp it continues for a moment. Switching the inputs makes no difference.
Nothing has been altered in my setup and the amp is fed power through a conditioner.
Thoughts?
The tubes all look good -- I added two NOS Raytheon 12au7 tubes a month ago, but doubt that's the cause.
I can't predict when it will buzz, but it's very loud and the volume control has no effect on it. If I turn off the amp it continues for a moment. Switching the inputs makes no difference.
Nothing has been altered in my setup and the amp is fed power through a conditioner.
Thoughts?