Conclusion: The M-Audio AV 40 remains a solid performer after some running manufacturing changes, and still straddles the line between higher-end home audio speakers and low-end studio monitors.
Pros: Clean, powerful sound. Reasonable low-end extension for a 2.0 system. Relatively flat response means you can use these as studio monitors in a pinch. Solid build quality. Plenty of connection choices.
Cons: Large for powered PC speakers. Slightly recessed high end. Still lack low-end punch compared with similarly priced 2.1 systems. Rear-mounted power switch is a pain.