[PStamler]

On May 17, 5:35*pm, wrote:
Hi, I use a Roland AC33 for small gigs with a Godin Kingpin archtop
guitar and i plug a mic into it for vocals, it's not bad but in some
situations it's not loud enough,

By "not loud enough", do you mean that even if you turn the volume
knob 100% clockwise you're not getting enough volume? Or do you mean
that it's going into overload before it has enough volume?

The latter is a sign of insufficient power; the former has nothing to
do with power but everything to do with voltage gain. Very different
issues.

Peace,
Paul