I have a low level high frequency noise on the left 1 output, which appears to be coming from my Fryette D60 More amp block 1, which is panned hard left. I moved the block to the right output side of my preset and it did the same thing on the right side, when I bypass it, either mute or through, the sound goes away.
Also, on powering up and using Axe edit, when bypassing or turning on amp block 1, it makes an audible pop and causes the pitch of the noise to waver. As the unit warms up and I bypass/turn on amp block 1, the pop and pitch waver of the noise goes away and the noise stays steady and continuous...