I use a single keyboard amplifier and am very happy with the way it sounds in my small studio(one side of my small living room). I'm not going to need anything with a large wattage to fill my rather small space. I'm also not planning to do any gigs at bars or anything like that so I don't really haul any of my equipment outside of my home. When I perform at my church, I use their Yamaha digital piano which is hooked up to their sound system thus eliminating any need to bring my equipment. Other than my three ring notebook with my sheet music, I travel light!! In April, I will be upgrading my current amplifier to a Fishman loudbox micro.