Hello whitefroded. I will have to do some more deliberate listening and comparing of the two, but this is what I tell you right off the back:
- ASG-1 is more 3-D in its sound signature than the GR07 (please don't think I'm not loving the Vsonic anymore when I type these comments). The music is taller and I think has a bit more of a soundstage in the ASG-1 compared to the GR07. Although it didn't help to mean anything, but we are talking about high quality massive 15mm dynamic driver as compared to the 11.5mm dynamic driver.
- I don't really hear a mid-bass hump although I'm sure there has to be one in the ASG-1. What I hear is massive glorious deep bass in quantity and quality. I always say I'm more of a basshead than not (although not a full-blown member of that segment). I know one of our members stated earlier in this thread that the FS has more bass. I can't imagine that in my head, nor would I think one needs more bass than what I'm hearing out of these universals. These go low when call for in the music. I've been listening diligently but have detected no muddiness. The Aurisonics surpasses the GR07 in sub-bass.
- Fit: The GR07, although purported to be a monitor, is built like any typical universal IMO. It's a pretty decent build. The ASG-1 is basically a custom IEM put in a body (or shell if you will) to be as universal as possible. But the shell of the ASG-1 is basically shaped in the same way that you would get it if you were to buy a custom. I'm saying this - I could be wrong - because I don't believe Aurisonics is meant to be a universal in-ear monitoring unit. I think it was made into one because of demand by some audiophiles and regular music lovers who are cautious about stepping into the customs world. But this is clearly meant to be a custom in-ear monitor in my opinion. So what I'm getting at is the GR07 was designed to fit all ears, and it fits mine most comfortably. The ASG-1 is really designed to fit all ears who get a custom IEM made, but the universal probably won't fit all ears. I think it will fit most. It fits mine quite comfortably, but I wouldn't surprise if a few didn't have the same results. You have to be able to wear these like a custom, however, to get the optimum sound from them. The build quality of the ASG-1 simply surpasses the GR07 - from the beautiful detachable cable, well-crafted shells and design, all the way down to the wonderful hard shell case. I don't know how long Dale and crew can keep this up, but I really feel what you get in the tangible parts of this product way surpasses its price point. All of this has nothing to do with sound (well, the way the drivers are placed in the shell may have something to do with the sound, but that's another topic).
- Vocals are just as forward in the ASG-1 as the GR07 - perhaps more so. Now, sometimes it sounds like the singer is too close to the mic in the ASG-1 (very detailed), but I don't want to be too critical of this just yet as ASG-1 has little burn-in whereas the GR07 has probably about 400 hours or better now. I need to give the ASG-1 more time to settle in.
- Mids simply have more details in the ASG-1 than the GR07. But drums are still my favorite in the GR07. The ASG-1 are very damn close and are more 3-D, but again, it needs burn-in. I can see the potential of the drums being so close. The drums in both are very natural and realistic. The GR07 may have little bit of a warmer sound than the ASG-1.
- Highs are harsher in the GR07. The highs in the ASG-1 blend in more naturally with the mids. I'll add more thoughts and comparisons as A/B them further, but overall (as you can see) I think the ASG-1 is the much better value - especially at its price point. Again, you're basically getting a custom IEM pushed into a universal's body.