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.