My gigging amp for the past 15 years has been a Roland BC-60 Blues Cube. This is a small, punchy solid state combo amp that sounds as good as most tube amps. My Bluesbird sounds fabulous thru it. Unfortunately, Roland stopped making them years ago, however you can still find them on Ebay, etc. Most Roland amps are very good, and would make your 'bird sing!
If you want a simple, great sounding tube amp, the Fender Blues jr. is a great little amp.