You want a very small amp, ten or twenty watts at the most. Playing loud guitar in a campground is not going to be appreciated. Also you want an amp that will work well on battery power and a huge amp won't cut it on battery power. I have a keyboard, a bass, an electric guitar, an acoustic guitar, three ukuleles and a bass ukulele in my RV all of which are electric. My amp is a 20 watt bass amp that I never turn up higher than four.