Hey there

So I got a Vox AC30C2X a few months back and love it to bits. Really nice tone and very versatile, loves my effects, loves my tele.

EXCEPT it doesn't seem to like the notes E, F and F# in the middle octave of the guitar! Not just my tele tested it with other guitars too.

When i play these notes this strange muffled sound swells in underneath. I thought it may have been my pedals or something, but no had a real intense try of it without pedals plugged in, tested switching the effects loop on and off, and with a couple of guitars.

Definately doesn't make me hate the amp, but definately doesn't sound right at all. Can anyone help?

I considering posting a video on youtube in regards to it as well as a few other sonic issues i've been having.