Summary: Prior to the review, I would like to thank VSonic for the review sample.
VSonic is a Chinese IEM company. For years, they've been one of the leading OEM manufacturers in the world, manufacturing for some of the leading audio companies in the world. A few years ago, VSonic had started to develop IEMs to be sold under their own brand name. The flagship, the then called "R07" was developed for more than three years.
Pros: Great bang for the buck value, balanced sound-signature, very wide sound-stage, good building quality, a lot of included accessories.
Summary: For the price somewhere between $150.00 and $180.00 USD, there really isn't many other competition for the price. They really get the job done well. Can get a little stale in sound sometimes but that's really a rare case. These really are great!
Great sense if air in the treble (one of the best I've heard) with great detail and extension (sibilance was not a problem for me personally).
Fairly flat mid range that is true to the recording.
Pros: Great overall sound, HUGE bang for the buck, nice looking IEM, works well with most set ups
Cons: can be difficult to get an proper insertion (isolation)
Summary: these are nicely made and sound nice. They definitely put their sound signature stamp all over my record collection which is odd because they are fairly neutral in many respects. I feel it's somewhere in the dynamics and/or presentation that they add their unwanted stamp. For their designed purpose, on stage, I say these are spectacular and well made, but for casual and relaxed listening, they did not excite me enough to warrant further listening.
Summary: These are amazing IEMs for the price. It is a balanced IEM and isnt lacking across the spectrum. They can handle pretty much every genre you put through these.
The bass on these is excellent, it rumbles down deep, while being very quick and tight. But the main thing which I love about the bass on these is the 'weight'. When the track calls for it these really do move a whole lot of air and slam it against your ear drums.
Pros: Highly detailed, neutral, goes well with whatever you throw at it
Cons: Can be sibilant (requires 100+ hours of burn in), springy cable, unhelpful strain reliefs.
Summary: VSonic GR07 is a great example of IEM strong because it has few flaws and almost all of these are possible to correct with a good equalizer.
Bass is perfectly controlled, excellent texture, very well extended (-6 dB at 30 Hz with perfect seal), perhaps a bit warm due to high-bass boost (~250 Hz). No bass bleed is present.
Mids can be slightly forward to slightly laid back depending on tips and depth of fit.
Highs... here's the issue.
Pros: Very well balanced and very precise sound, no major flaws, adjustable nozzle angle
Cons: Slightly springy cable, over-the-ear only, sibilant/presence boosted with certain tips, slightly warm, could have more highest end
Summary: just wonderful little iems. wish the isolation was a little better, not bad though, just nitpicking. The microphonics are unacceptable, just a light tap on the cable and i can hear it, annoying as crap, but definitely not a deal breaker.
Pros: not fatiguing at all, sounds great with just about anything, very very relaxing iems
Cons: dont like how you are supposed to wear the wire up and around the ear, and if you wear it straight down its kind of a weird fit.
Summary: These are my first pair of upper-mid tier IEMs, so I can't really compare these to anything else in their price range. I can say however, that they sound very good to my ears, with much better bass extension than my A151s, and a nice midrange and overall more balanced sound than my M50s.