What is wrong with that? I also have the Sony MDR 1 A. Why use hf, if I got good speakers? On the go, I need other kind of quality, like listening to it for awhile without fatigue. And not bother my fellow traveller’s with open cans. So both HF, do very well. The only reason to buy better and expensive, would be to not suffer from acoustic imperfecties. But at home, I not like headphones, and music playing mostly in my head.