I just received the C352 today and this unit is smaller and lighter than the HK3480, it looks plain and not as fancy, though it sound much bigger than it looks!! It's plenty loud even when I had the volume up to 9 o'clock so around 8 is where I prefer, right out of the box it sounded kinda stiff and harsh, so I just left it running and went to dinner, 30min later I came back to the room and it's much better....looks like this thing need to warm up or something, I swapped both amps back and forth and it made the HK3480 sound kinda....weird, I don't know how to describe the difference but I guess now the HK3480 is kinda like throwing lasagna to the wall while the C352 is like a bowl of salads. The C352 also has much better image and very profound detail, instruments have better sense of distance so I guess this is what people refer to as airy? the high is very smooth and midbass is punchier, vocal is very solid, so far I'm pretty happy with it so I think it's a worthwhile 'upgrade'
