Small Cheap Amp vrs Large Cheap Amp?

Generally speaking... a new cheap amp that's small with a small speaker (~2" to 8") will sound better for harmonica than a new cheap amp that's large (~10" to 15"). A small speaker will distort easily and sound reasonable, even if the speaker is not considered a good one. The large speakers will not distort easily and will sound thin and anemic (lack warmth, high-end crunch and bass response). Try this theory the next time you go to a local music store.