Replaced Superlux HD 681 EVO, as the cable connection was damaged due to its type error. The 9800 is much more solid, it fits very well on the head. I'll probably just get a suede cushion instead of the faux leather one. I also really liked the 681, but I think the 9800 has a much nicer, more powerful sound. The bass sounds very nice, his voice is really great. I use it with Creative Sound Blaster Play 4, it cannot be driven sensibly with an MSI motherboard sound card. You can hardly hear outside noises and it closes very well to the outside, even at high volume, hardly anything filters out.