I realise that it's probably a problem for you to do, but if it were me, I'd tell him to
bin it and buy a decent amp. The MG series is just nasty sounding IMHO. I had a small one
as a 'general knock about at low levels at home' amp and it was _awful_ - and that was
with real guitars and guitarists as well as my mad fumblings. Someone has since borrowed
it and tbh, I can't be bothered to remember who!
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Veni, Vidi, Aesculi
(I came, I saw, I conkered)