A:AnswerYes, since it has line level outputs.
You have two options:
1. Player => Power Amp => Passive Speakers
2. Player => Mixer => Power amp = Passive Speakers
or use Active Speakers (which have build-in power amp) instead of Power Amp and passive speakers
PS There are power mixers which also have built-in amplifier.
A:AnswerIf the Kenwood has typical line level RCA inputs you are good to go. But I think you are wondering if a modern CD player is compatible with a older receiver. I use the Onkyo with a 1990 Yamaha receiver and there are no issues with incompatibility.
A:AnswerBecause it is defective. My guess is an issue with the laser. Mine did the same thing straight out of the box. When it did play, the cds skipped really bad. It was unlistenable. Return it.