The Rumble 25 fills the gap between a tiny practice amp and a full rehearsal rig. At 25 watts through an 8-inch speaker, it has enough volume to hold its own during practice with a drummer if you dial it up, while still being manageable for bedroom practice at lower volumes.

The overdrive circuit is a genuine highlight -- it produces warm, smooth bass distortion rather than the harsh clipping you get from cheaper amps. Vintage, Contour, and Bright voicing switches let you shape your fundamental tone before you touch the EQ knobs. This is a seriously capable little bass combo at a price that doesn't hurt.