Thanks anakchan.

neutral-flat with good fr balance w maybe slight dip in lower mids and upper bass and still wind noise problems you say?

looking forward to hearing it.

so the wind noise ... better than 1+2?

Interesting! If they could sound like a HD600 in-ear version, or even a HE500 / HE6 ...

To me the wind noise was the same as the 1+2 (based on my dodgy ageing memory!!). I don't think it made much of a difference with the bass port placed in front or on the side.
I've not really heard the HD600 or HE-series. I should give those a shot some time. My gut says I should actually compare it to my SR-009 however I've loaned my Stax gear to a friend since I'm gonna be in Oz for 3 weeks.

Ive tried some dynamic balanced armature IEMs before. To my surprise I can actually feel the ambiance that only headphones can give. 8mms might loose performance in certain frequencies but it is a disadvantage that BAs can solve and together they create a greater dimention i love to call bubble around ears

Thanks for the review AnakChan, I believe my pair of RDB+ here have a slight absence in the lower mids, though it doesn't effect the presentation, actually a fe things you described about the mid range and treble I can relate to with my RDB+ V1 pair, such as the timbre with violins and piano, airiness, Just the bass section rather sounds different. I'm not saying it's the same BA just I can relate to what you're describing.

An excellent review, I am also looking forward to hearing this. How would they compared against the 1Plus2?

H20, that is rather surprising. I would have expected the v2 to have more mids than the v1 that you have. It makes me particularly curious what the v1 sounds like now. Maybe I've misinterpreted the reviews you chaps have written. I'll have to re-read.

A1B, the 1Plus2 does win in most areas. The 1Plus2 in terms of individual factors and audiophile searches for wins in each of those areas technically. I know more recent reviews from others have disagreed with my thoughts but for me with my former 1Plus2, aside from the infamous sibilance, I had coherent issues too. The only logical explanation I can think of now is that the 1Plus2 tour had a much more burnt-in/bedded-in IEM whereas my 300 hr burnt-in pair wasn't enough.

Nice review now i cant wait for you comparison on the V1 ( since i ordered that one ) and now i know their sound signature is different im wandering what kind of cable will have a perfect synergy for them without losing too much of the mids

thanks AnakChan, nice review. i am curious how different sonically 2v1 is from v1? you mentioned 8mm driver instead of 10mm driver, i am not sure how much this can impact sonics?
however for the price it looks like RDB+ is great value when compared to more pricey IEMs like Tralucent. not to forget 1plus2 cost 1200$ which is more than twice RDB+ price... while i am not sure IF this price difference translates into performance difference one to one... hence paying less might be getting more.
i am still waiting for my RDB+ v1, will report my findings when getting them.
what i am curious is how RDB+ compares to HeirAudio similarly priced IEMs.

When I get the RDB+ v1 and after I've spent some time with it, I'd be happy to write something up. Having said that, I'm sure many who have heard the v1 will probably be part of the v2 tour so I'm sure they'll write something too.

Very interesting

have just visited their website and very interested in this tiny IEM ) the customize option for color and faceplate is great <3

yep..and i am part of the tour of the v1 and v2.. =)

Forgive a newbie question, what is the DAP in the first 2 pics?

@AmberOzL: That would be the AK100. He actually had his modified to what is called the RWAK100 named after redwine the folks who did the modification. Please search for AK100 for more info.
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Speaking of AK100 can you please let us know how the two paired together? thanks

@audionewbi, thanks man, I was looking for an audiophile level player but I didn't hear many good things about AK100. Unfortunately, removed from the list. The capacity and the black background is awesome though.

I've not had any issues pairing the RDB+ 2v1 with the RWAK100. Actually most of the review I wrote above was with the RWAK100 as the source. Occasionally I did try the other VentureCraft DD Socket 1 & Ortofon MHdQ-7. More particularly I found the MHd-Q7 has a nice 3D imaging which added to the RDB+ 2v1. I may consider coupling the RWAK100+MHd-Q7 for the RDB+ 2v1 after my holiday trip.

And that could be the reason, ehy you found the IEM lacking in bass.
The AK100 has too high impedance for a good bass response with IEMs.
Here paired with a Triple Fi 10 Pro:
http://www.markuskraus.com/RMAA/ak100tf10.htm

@Kornasteniker, Yes that is true, except (and thanks for highlighting this as I've clearly left out the DAP used in the review), but I'm using the RWAK100, not AK100.

Oh, ok then! So you don't have something similar to compare the RDB+ 2v1 with?