CHANGSTAR: Audiophile Headphone Reviews and Early 90s Style BBS

Lobby => IEM Measurements => Topic started by: Marvey on December 09, 2013, 04:42:22 AM

Title: Vsonic GR07 Measurements
Post by: Marvey on December 09, 2013, 04:42:22 AM
Vsonic GR07. I don't know if these are the mk1 or mk2. They were sent to me as part of the ASG2s. I'm way late in getting these out and I apologize for that.

My short subjective impressions are as follows

almost... (that is almost great)

I really like the presentation, the timbre, (it looks like a dynamic driver with low higher order distortions). The only issue was that the GR07 were bright up top. Again, these measurements are not accurate past 8-9k, so I don't think that 10kHz spike is totally accurate, but I did feel there was increased volume from 6k+ up.

The brightness wasn't of a spiky peaky nature, and I found that EQ did wonders.
Title: Re: Vsonic GR07 Measurements
Post by: Anaxilus on December 09, 2013, 05:05:45 AM
The treble was what killed these for me, not bad, not great either.  I got something of a mechanical timbre in the upper registers as a result.  That was a mk1 I had.  Still my favorite ergonomics for a dynamic driver IEM.
Title: Re: Vsonic GR07 Measurements
Post by: Hands on December 09, 2013, 06:36:08 AM
This makes a lot of sense when I owned the MK2. Lots of great qualities, but slightly bright and not particularly smooth up top. I could live with the sound, TBH, but I just could not get a good seal with any of the included tips and gave up.
Title: Re: Vsonic GR07 Measurements
Post by: thegunner100 on December 09, 2013, 02:11:39 PM
The gr07 mkii was my first pair of "real" iems. Pretty great for the price back when I first got them. They are a bit bright but EQing 6-8khz helps to tone down the treble a lot. The ergonomics on them is pretty good too, when worn over the ears.
Title: Re: Vsonic GR07 Measurements
Post by: Armaegis on December 09, 2013, 04:32:08 PM
Interesting. I am very sensitive to treble but I don't find the GR07 bright at all.

Are there any other iems with adjustable nozzles? Thus far, the GR07 is the only iem that has ever fit me "properly", as I have small ear canals and kinda weird angles.
Title: Re: Vsonic GR07 Measurements
Post by: Sweded on December 10, 2013, 07:57:18 PM
Interesting. I am very sensitive to treble but I don't find the GR07 bright at all.

Are there any other iems with adjustable nozzles? Thus far, the GR07 is the only iem that has ever fit me "properly", as I have small ear canals and kinda weird angles.

GR06 and VSD1 have adjustable nozzles as well.
It's a great idea I wish more manufacturers adopted.
Hopefully VSonic haven't patented this stuff...

 
Title: Re: Vsonic GR07 Measurements
Post by: shotgunshane on December 10, 2013, 08:26:46 PM
I really liked the mk1 and mk2 a lot but over time the peaky treble would irritate me.  They really are a fantastic value and very capable iem. I hope the next generation that Vsonic is planning are smoother in treble with very little changes anywhere else.
Title: Re: Vsonic GR07 Measurements
Post by: mechgamer123 on December 11, 2013, 12:28:19 AM
I believe these are actually the GR07 Bass Edition as per Unity's PMs, do you remember if the cable had a red stripe on it or not?
Title: Re: Vsonic GR07 Measurements
Post by: MattTCG on January 17, 2014, 08:05:29 PM
^^ yep, the gr07 bass edition is excellent as well. The cable does have the red strip which is kind of a weird aesthetic for me. I think that they could have just made the cable dark red to differentiate between the two version. But the candie cane strip is a bit strange looking.

The gr07 be is outstanding. It doesn't quite have the super extended treble of the regular edition, but carries a bit more texture and punch on the sub bass. Both are very good iem's IMO.
Title: Re: Vsonic GR07 Measurements
Post by: AstralStorm on January 19, 2014, 08:21:29 AM
If you feel like modding, remove the back of the shell and stuff it full of damping material (in this case, mineral wool is best, as it attenuates most >5kHz) or preferably replace it with 1.5 cc of mineral wool covered by anything, e.g. lacquer.
This will fix the treble and slightly linearize the bass. Do not cover the front vent, this causes the bass to explode.

What will remain is the barely audible distortion and a hint of grain, which I think comes from the driver grille.

Pity they do not have better air, end at 17.5k. Darn, your new measurements are accurate even there.

GR07 mkII sounds identical. It just looks silver and the cable is silver-coated copper instead of pure copper, so it doesn't green anymore. Slightly higher impedance.

Also this: http://rinchoi.blogspot.com/2012/10/vsonic-gr07-mkii.html
http://rinchoi.blogspot.com/2012/10/the-effect-of-ear-sleeves-vsonic-gr07.html

I found that the large VSonic single flanges (conical shape; not #1) work best. Duh. (Esp. if you mod it.)
Comply foams unfortunately rob the IEM of some air it desperately needs.
Long RE-272 biflange with an adapter (to reduce diameter to 3mm) works almost as well, boosts air while slightly attenuating 8k, but isn't as comfortable.
Adding an extra 1.5 cm of 4mm silicone tubing to simulate a longer ear canal reduces the 8k blip even more, but it breaks ergonomics.
Title: Re: Vsonic GR07 Measurements
Post by: AstralStorm on January 19, 2014, 01:56:07 PM
My old own ear measurement, I think it was shallower than yours since resonances are higher up.
From my experience, deep insertion moves resonances down, often quite a lot.

(http://www.changstar.com/index.php?action=dlattach;topic=1028.0;attach=3480)
Title: Re: Vsonic GR07 Measurements
Post by: mechgamer123 on January 19, 2014, 10:14:05 PM
@Matt I'm saying I believe the ones measured were the GR07 Bass Editions. I'm part of the same tour group as Purrin and I'm fairly certain the guy said these are the Bass Editions.
Title: Re: Vsonic GR07 Measurements
Post by: UnityIsPower on March 07, 2014, 01:58:59 AM
These are indeed the bass edition GR07 as mech says :)
Title: Re: Vsonic GR07 Measurements
Post by: mechgamer123 on March 07, 2014, 05:23:32 AM
I have to say that out of all the IEMs I've tried (Shure SE846 w/ bass filter, ASG-2, UE900, DUNU DN-1000, etc) the GR07 BE has my favorite tonal balance, except for the 10k spike.
Title: Re: Vsonic GR07 Measurements
Post by: Alondite on April 17, 2014, 07:09:55 PM
I'd like to add that you can pick up the GR07 for $100 now in the form of the GR07 "Classic." It sounds pretty much like I remember my old Mk. I sounding, though the cabling is vastly improved. It's internally braided and is much softer and more pliable will less of a memory character. Plus the housings come in a cool silver color and the finish seems a bit cleaner and more professional.

Despite the hard and sometimes sibilant treble, these are pretty much a steal at $100.
Title: Re: Vsonic GR07 Measurements
Post by: thegunner100 on April 17, 2014, 07:25:18 PM
I'd like to add that you can pick up the GR07 for $100 now in the form of the GR07 "Classic." It sounds pretty much like I remember my old Mk. I sounding, though the cabling is vastly improved. It's internally braided and is much softer and more pliable will less of a memory character. Plus the housings come in a cool silver colour and the finish seems a bit cleaner and more professional.

Despite the hard and sometimes sibilant treble, these are pretty much a steal at $100.

Thanks for the heads up, that's an insane price! Better than the re-400 @$100, by just a little bit imo. I wonder if the change in cable did anything to help with the sibilance?
Title: Re: Vsonic GR07 Measurements
Post by: MuZo2 on April 18, 2014, 07:08:08 AM
GR07 classic is without those old bio cellulose drivers, so its completely new iem with same name.Thats why you have price reduction.
Title: Re: Vsonic GR07 Measurements
Post by: mechgamer123 on April 18, 2014, 03:18:24 PM
Actually that was just a rumor and was confirmed to be false by Lendmeurears:

2) There has been rumours on head-fi forum that the GR07 classic no longer uses the same kind of drivers as the previous generations of GR07. We would like clarify that this is WRONG. The GR07 classic continues to use the same kind of bio cellulose driver as the previous iterations.

The Vsonic CEO had clarified that on his weibo (China's version of twitter)

You can see the actual post here: http://www.weibo.com/p/1005051758406167/weibo?profile_ftype=1&is_ori=1#1395572749936
Title: Re: Vsonic GR07 Measurements
Post by: Alondite on April 28, 2014, 07:56:40 PM
I own the Mk. I, Mk. II, and the CE. The CE is a repacking of the Mk. II with different colors. It has the internally braided, softer and more silver-colored cable of the Mk. II, and is sonically identical.