I've been asked by a couple of people to directly compare the Altone 200 with the Dunu-1000, so I spent about an hour and a half tonight comparing the two.
- I level matched as closely as I could but even with an SPL meter it's really hard, mainly because they have slightly different mid-range presentations, and using test tones to balance them doesn't actually end up with a volume balance the way I would listen.
- I am not treble sensitive (at all). I genuinely liked (have owned) headphones like the SR325i, K701, RS1, DT880 and T1.
- Although I've owned a lot of brighter cans - my preferred signature is one with a lot of balance - but natural sounding
- This is my very subjective opinion, and I rushed it - and it's blinkin' hard to A/B two IEMs when they are quite a bit different.
Tracks I listened to can be found here : http://www.head-fi.org/a/brookos-test-tracks
Comparisons all made with FLAC files on a Fiio X5 - no EQ.
- Vocals are slightly more forward - esp female vocals
- Need slightly more power to volume match the Altone 200
- Can be a slight stridency in some tracks (female vocals) where song is naturally 'forward' - more upper mid emphasis?
- Male vocals tend to be a little further back
- Vocals generally a little 'richer' than the Altone200
- Slightly more bass impact - or at least it appears that way
- Slight sibilance but only with one or two tracks, and did not make me cringe (YMMV)
- Slightly hotter treble
- No stridency - mids seem quite nicely balanced between upper and lower
- Holographic feel to some tracks - not sure if this is reverb / decay / ? - but doesn't sound wrong (I quite like it)
- Slightly brighter than the Dunus
- I think it has a little better lower bass - cello especially rendered beautifully
Both sound great - and I think it comes down to preference. If you don't mind a slightly hotter treble (and to my ears it's more treble than upper mids), but prefer a slightly more balanced mid-range - then the Altone200 are just incredible for the current price.
If you like a richer vocal experience - but at the expense of a little stridency from time to time - then the Dunus are hard to beat.
Both are very clear, with great separation, really good bass impact - and fantastic tone.
My preference at the moment (and remember that I haven't had these long) is actually the Altones. I listen to a lot of female vocals, and I'm finding these just render female vocals slightly better than the Dunus. I was listening to some Pearl Jam earlier though - and thought the Dunus covered that music slightly better.
Hope this helps someone.