The Micro Cube Bass RX is exactly what I use with my little 23" scale Gold Tone Microbass:



It adds just enough bottom-end thump to make it sound like a stand-up bull fiddle. Sometimes I play with 3 acoustic guitars and maybe a banjo or mandolin and it gives me enough volume to be heard without drowning out the treble players.

Big box? Haven't used one since I got my first B-15. We were our own roadies back then and the Portaflex made life a lot easier. Not only that, it sounded much better than the big box monstrosities from Traynor, Fender, Marshall, Vox, etc.

My little GK is all I need now. Any larger venues and I simply DI.