Serviced!!! All functions work perfectly. The unit is a quad or stereo receiver. The receiver does not have much hype like the 730 or 930 because the quad receiver is not great! However when you flip the switch on the back to combine all 4 power supplies into 2 channel stereo its a beast better than the 930!!!! Killer power and a super high current! It sounds more powerful than my pioneer sx1280. It sounds better. Harman Kardon made units that just sounded better than anything in my opinion. The beast rocks !!!!
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