Lepai LP-2020A+ Stereo Integrated Amplifier ($22.80)

There's cheap, and then there's dirt cheap -- I'd put the Lepai LP-2020A+ into the latter category. For this kind of money you might expect a flimsy plastic thing, but no, the LP-2020A+ has an all-metal chassis and faceplate. It's tiny, just 1.5 inches tall by 5.5 inches wide by 4.5 inches deep. The 20-watt-per-channel design sounds decent, and I wouldn't rule it out for audiophiles looking for a budget amp for a bedroom or office system.