My most frequent use is with my ipod, but I also use them when watching a blueray disc. I had a Sony MDR V600 headphones, but somehow they seemed to disappear. So back to B&H and the Sony phones and their specs and found the ZX700's. 50mm drivers instead of the 40mm on the V600 and 10khz higher frequency range on the upper end. And WOW! what a difference these phones make. I did add an inline volume control, due to the variances in volume of music on my ipod, but overall these phones are the bomb. Even though the low end response is still 5hz like the V600's, the bigger drivers really make that bass stand out. I highly recommend these phones.