Hey guys,

Recently I have noticed an odd rattle with my month old Marshall JVM215C amp. Some notes cause a slightly annoying vibrating/rattle sound which can be quite annoying.

My question is, Is this a fault with the amp or is it just a harmonic resonance which is common with valve amps?

Cheers in advance.
Ibanez RG321MHRB
2005 Epiphone Vintage SG G400
MXR EVH Phase 90
Digitech Bad Monkey
Korg Pitchblack
Marshall JVM215C
Marshall 1936 2x12 Cabinet
Some amps rattle...my old Peavey Classic 30 was terrible about it. I bought a tube tamer thing for it, and it helped a bit. If it's got the tube retainers with the screws, make sure they're tight.
It is not uncommon; particularly with tube amplifiers. Little things get loose and rattle. If it is too annoying, open up the amp and tighten any slightly loose screws and bolts and see if that fixes it.
"Maybe this world is another planet's hell?" - Aldous Huxley