very harsh sounding. mid scooped. i dont enjoy listening to music on it, i've tried to like it but its just too harsh. why did i buy it? it seemed cheap at the time.
its good for drum practice though so all is well
update: went to edge at festival mall today. they have a couple of superlux cans hd572, hd661, hd651. demn, i hate my hd681 and these other cans ive tried are worse - worst sound and quality award goes to hd651 - it looks like the 80-peso construction headphone by eagle hehehe with speakers that has no bass, no highs, tunog latang mids lang.
heck, i love my first superlux in-ears which is the hd381 for its clarity and detail (its still not as good as the senn cx300II which i was using before) that's why i dont want to give up with superlux yet. after today, hmmm philips cans sound better for the same price.