Does not come with the power adapter.

The three speakers and the speaker wires are in excellent condition and they do power on but I don't know how the sound quality is there anything like that.

The Boston Acoustics BA745 2.1-Channel Powered Computer Speaker Sound System in black is a high-quality audio solution for your computer setup. With a sleek design and powerful subwoofer, this system delivers impressive sound performance for music, movies, and more. The wired connectivity and microphone jack feature make it easy to set up and use for all your computing needs. Experience crystal-clear audio and enhance your overall computing experience with the Boston Acoustics BA745 speaker system.