Paul, possibly Pioneer phone reps have been instructed to be that dogmatic about things, but the statement isn't necessarily true. No receiver has to shut down automatically on 4 ohm speakers; it depends on how loudly the speakers are being played and how wide the dynamic range of the program material is. Reports from users indicate that Pioneer receivers have worked well with 4 ohm speakers, including M80s, in the past, so presumably this will continue in the future.


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Enjoy the music, not the equipment.