I'll have to read the Audioholics article. I ask because I opened up my EP600 and was surprised to find a very thin sheet of stuffing up against one wall. I guess this is normal because I reported it to Brent and he's never gotten back to me to tell me that it's not right. I wonder though if I could get the 600 to produce even tighter bass if it was stuffed more. I had done this with my Sony and it made a world of difference.