Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Excellent with Apple PowerBook G4

I plugged my pair of AW870's into my PowerBook G4 and have had outstanding results. The sound breaks up near 150-175', more so if there are a lot of walls & obstructions. Apple's iTunes v 2.n contains its own graphics equalizer which is much more resolved than any hardware alternatives, and the sound is extremely lively. The speakers are heavy but small enough to be unobtrusive once placed.