There is a Bass Booster headset for The Nokia N800 and I think it will wor on the N810 as well. This headset is Made for the nokia 5800 xpressmusic and other Nseries phones but On the Nokia N800 it gives you rich Hi quality sound and bass. Its more like a amplifier. Heres a link of a picture of the headset. The main thing is the remote control thats the amp. You can use any headphone on the remote control.

http://www.allaboutsymbian.com/image...adphoneset.jpg

I don't get it. It's a passive pair of earbuds. No amplifier there. If it had any form of active amplification, that remote part of the unit should have a battery inside. Does it? (I don't know of any from Nokia but never know )

To me, it just looks like a cheap pair of earbuds with most likely not so good sound quality. (which means it has over the top bass or just bad in other areas) I recommend a good pair of in-ear monitors (IEMs) if you actually want good sound quality and good passive isolation. It'll save your ear drums and you'll hear more of the music you never knew existed even while listening from noisy areas.

If you want a place to start for more info, start from one of the best reviewers:
http://www.head-fi.org/forums/f103/m...-v-3-a-450407/