I actually did a direct shootout, between these two units, when I decided on one. Tried a few different mics, and my friend played bass through both. Pretty much, the GR destroyed the Solo 610 ... not that the Solo 610 is bad, but, its a lot more 'gooey' and 'middy', while the top end is almost dull. The GR sounded pristine and high-def next to the Solo 610, which is why I picked it (Got the 2 channel...I even preferred it on bass, just sounded so much cleaner).
Like some other people said, I wouldn't (probably ever) want to use the Solo 610 on rap vocals (or vocals in general)...though like some people said, it could be great for getting a 'warmer, thicker, older' sound from bass/synths/instruments/etc.
Originally Posted by teamalkos
I used the great river and it sounds great, a little too fat for me but it was a GREAT pre amp
I really wouldn't call the GR 'fat'...it does have a very nice sound to it, but I wouldn't really describe it as 'fat'.
If push it, you can make the low end slightly bigger sounding, but I find it to be, generally, pretty clean sounding (other than the slight character it adds).
I actually want to buy a 1 channel BAE because I find the GR really isn't as colored as I'd like it to be sometimes....which is by no means bad. But if I seriously want to color a signal, GR *will not* do the trick, no matter how much you push it. IMO it almost goes from super clean to a little warmth and character but nothing excessive. Always sounds great though