I found that it admirably powered both a Carvin 4x12 and a Dean Markley 1x10. No one in the store could believe that the sounds coming from those speakers were created by that cigarette pack. I got a kick from reading user comments at the Smokey website. There seems to be plenty of creative ways to use this amp. I used it as a distortion box plugged up in front of another guitar amplifier.
Many people seem to be using it with a harmonica.
Others create a wah-wah effect by placing the amp on the floor while playing and moving their foot up and down over the speaker. One person claims to use it for distorted vocals. Another gets a reverb effect by placing the amp at the bottom of an empty five gallon bucket. Lie the box down flat and place a BB on the speaker while you play. Have someone hold the thing by the cord and twirl it overhead while you play.