Coming from the Vibe to the RE0, I preferred the Vibe.
The RE0 is a
significant change from the Vibe. I may like it. You may be put off by it. I don't know.
From an unbiased standpoint, the RE0 is significantly better then the Vibe, but I will say the Vibe while not great in several areas is a darn fun earphone to listen to.
Suggestions on the RE0. There will be some burn in time being a dynamic. There will be some importance on tip choice in order to get a good seal and decent bass. The RE0 needs an amp, a robust amp. A weak amp will be limited. It's 64ohm and only 100dB sensitivity. It will take some wattage to really pelt out the sound with more effortless dynamics. I think it still comes with the E3 which is ok as something, but you might want to invest it something more substantial. I tried out the RE0 a year ago and had the E3 and E5. I question if they are adequate for the earphone and have noticed limitations with a couple other earphones I've used too.
Some quotes about amping with the RE0:
Quote:
Originally Posted by ljokerl 
Regardless, the RE0 actually work fine without an amp, and require some serious power for a noticeable difference. I did not feel that low-level amps such as the E5, PA2V2, or a CMOY did them justice. The T4 makes a difference only because it is warm and has bass boost, both things that the RE0 benefits from. The Icon Mobile, as far as I know, doesn't do either of those as well as a T4, so I personally wouldn't bother. I think mark (mark2410) owns both an Icon and the RE0s, so you could ask him. For me, the mini3 was the cheapest amp that actually made a difference, but that thing can crank out a good amount of power compared to the ultraportable amps.
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Quote:
Originally Posted by Aerosupra 
I own RE0 and the FiiO E5 and the results -
Cowon D2+ > RE0 - I agree, lacks the lows, but the FiiO E5 is a miracle worker for these IEMs, when it comes to bass. Cowon D2+ > FiiO E5 > RE0 gives you rich highs, mids and also lows. The E5 gives it the necessary punch and if you are the earthquake type, then the BASS BOOST adds a great amount
To put it in another way. (Please keep in mind, I am sort of a audiophile noob)
The RE0 aren't particularly easy to drive, even more difficult is to make them sound "dynamically". The MP3 player alone isn't up to this job, and this is were the (for example) the FiiO comes in (I have it set to BASS BOOST off, and even so it gives them the low. For me personally, they don't lack bass if you give them the juice. Their treble is just to irresistible for me to give up.
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Quote:
Originally Posted by archigius 
Here is a new RE0 owner.
Owned various iems, including Shure se530 and i really LOVE RE0, especially the hights and details.
It could be a little warmer, but with a slight equalization (+2/3 db on the low end) i can fully enjoy every kind of music!
To my ears it seems that RE0 is much better when amped, expecially soundstage is wider and the mids are more natural sounding.
Actually my portable amp is a Meier Audio Corda 2Move and i like how it sounds coupled with the RE0.
I'm using Shure black foams, mounted on the plastic inner part of a comply foam; isolation and comfort are much better than silicon, and sound becomes a little bit smoother, sweeter; the bass is also improved :
Imho at the actual discounted price, this iem is a steal.
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Quote:
Originally Posted by archigius 
I also tried RE0 with a Fiio E5, but with the 2Move is much better. It's more dynamic, clear and has much more soundstage, it think almost double.
It really sounds very very good, i can compare their sound quality with my old SE530.
Another thing i have to say is that i use them with Shure black foams mounted on the inner plastic of Comply foam; this improves isolation and bass response.
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