Would you say they have a neutral sound?

@punit  ok, will be adding more during the next few days
@Fidelity King  no, I would;t call them neutral. @warrenpchi and I agree though that they are the most neutral RHAs we have heard....they still have elevated bass and a great fun signature.

Fine review, thanks.
 
I'd like to see more comparison of the sound with the 750.

Hello Friend,
Congratulations for information about T10, was clear and objective,
Compared to the Shure SE535 it would have to compete with the Shure SE535 or se846?
Was thinking of buying the T10 more ended up buying the SE535
Now with the release of T20 I was thinking of selling the Shure SE535 and buy the t20 or se846 or JH13 or JH5.
Thanks for the info.

@juliojlo  Hi!! Sorry, I only heard the SE535 and the 846 briefly on meets. So can't really comment on them, I hope others with experience on them can chime in, more and more demo units reach the reviewers so there will be more opinions to pour in.
 
@Hatmann Yes, me too. my 750 is currently with a friend, but I shall get it back today or tomorrow. I didn't want to make the comparison from "memory" as auditory memory can be tricky (at least for me). I should have some comparisons added over the weekend.

Thanks for this in depth review! In the pictures however, the nozzles of t20 seem fairly wide which can be a comfort issue for folks like me with narrow ear canals. I had to give away my DUNU DN1K because of that. 

Hey,
 
we can move the discussion about the T20 to the official impression and discussion thread here:
Makes it easier also to post additional pictures on request etc. 
@cyph3r I have posted a pic there for you too comparing the nozzle with a Sonic VSD 2 (the only in-ear I had at hand)...

Excellent review! The pictures are very nicely taken! Thanks!
I'm looking forward to try T20 myself from the Asia T20 tour.

Would love to read a comparison to the Dunu Titan (which stunned me for the $70 I paid on Ebay).
Anyhow, Thank you for the review. I believe I will buy these at some point.

Thanks for the 750 comparison......How do the two compare in comfort?

@Hatmann the 750 is a bit smaller and lighter, so generally easier to wear. However, personally I had no issues in any regards with both of them. But of course, YMMV. I found them to be one of the most comfortable IEMs for me. 

I've been keeping my eye on them, RHA earphones that is, thus far it seems a more promising buy than Sennheiser or even high-end Shure/AKG. It would be great if they could break into designing full-size headphones.

@interpolate they did in 2012 .... google RHA S950i but they were far from high end and I think something RHA rather wants to forget.

I think I've just found the IEM for me.

p.s.
 
I am feeling less and less like investing in customs, when uni's are become as nice as these.
More cash to spend on big expensive cans....

I am actually trying to choose between the RHA T20 and UE900S, which do you think i should go with????

Hi Yan, for me it would be no question T20. The UE900S are good, I have them as well, but they lack fun. The bass is very recessed compared to the T20 and overall the UE900S seem to be just not that exciting. They get zero head time for the last year or so and I am going to sell them soon I guess.

Its weird how UE screwed this over, first with all the scandal and now turns out the quality and sound doesn't even beat IEM's almost $200 cheaper. What amazes me is that the UE900S has 4 BA drivers, usually when a frequency range is split into 4 drivers, the earphone should become more efficient at reproducing all the frequencies. Thats why I thought there should be plenty of bass when called upon in the UE900S, or maybe the RHA T20's have an intentional jacked up EQ V curve to compensate for one diaphragm. But yeah most people i see are routing for T20's i guess its better to go with them.

@Yan Ovtchinikov  well, it's 2 low and 2 high BAs in the UE900s and as mentioned they sound good. But I like the T20 more (by quite a margin). It's more engaging and entertaining. There is definitively not "plenty" of bass on the UE900s - if you compare it with another 4 BA driver in ear like the Shure SE846 - it's a different ballgame. Plus with the T20 you have the tuning filters to change so there is a 3 stage level of refinement for your personal taste. 

What so far has convinced me, is what people say about the sound, the filters and 3 year warranty, plus British/Scottish Design, dunno if thats a good thing, but so far has been.