I couldn't find any feedback on the sound of these either, so I thought I'd post my experience. Good quality kit, good components - a LOT more going on than modern SSL 500 series EQs. Comparing to an SSL 611 EQ, the frequency points and ranges differ and the knobs are slightly bigger (which is an advantage).
Comparing the sonics between the two - they're in the same ballpark. The Link definitely has the SSL sound. The 611/E series is more aggressive and has more gain on tap. Diming the top end on the link is equivalent to about 70% on the SSL for example. The midrange is probably the most comparable, but the low end is where I hear the most difference. They have similar characteristics, but the bottom end of the SSL isn't as big. This might be a good thing or bad thing depending on your taste. On kick drum and bass for example I prefer the tightness of the SSL when boosting. The Link gets a little loose/bloomy/wooly for my tastes on these sources - but it's a winner on toms!
So in typical RGO fashion - both have their place!