Apple Speakers 20W active f PowerMac G4 loudspeaker

Apple Pro Speaker kit Apple Pro Speakers feature powerful Harman Kardon audio technology. They connect to your computer using a single cable which provides 20 watts of sound (10 watts/channel) to the speakers with a frequency range of 70 hertz to 20 kilohertz. The Apple Pro Speakers can be used in conjunction with the Harmon Kardon iSub system to enrich your audio experience even more.

The analog-based speakers require systems with an Apple speaker minijack. They are not USB-based speakers. Currently, Apple Pro Speakers should only be used with the new G4-based iMac or the Power Mac G4 with minijack