Just got a N810. Speakers extremely distorted and 1/3 the volume of the 770. Distortion persists even at 1/2 volume. Max volume is about so low to make it difficult or impossible to carry-on a 'speakerphone' conversation on a bus/train. Headphone quality is good.

Now i'm guessing that I have a defective unit, but I'd like to hear from others (with decent hearing) who could compare sound between N810 and 770. Is it clear-sounding, or does it sound like guitar-fuzz?