Well, if you chat with Avid or look at their website they'll say its desigend in such a way as to work best with an arm with 'rigid gimbals bearing designed pick-up arms' (whatever they are!)
I did have a Graham Series 2 on my Acutus and thought it sounded fine. I have since changed for an SME IV. Due to the length of time it took me to swap them across I couldn't really do an A - B comparison. However, I did feel the Acutus sounded better with the SME, it certainly did not sound worse, of that I am sure! And if I'd bought the SME in the firts place I'd have saved a lot of money as at the time of purchase the Graham was about £1000 more expensive!
I did have a Graham Series 2 on my Acutus and thought it sounded fine. I have since changed for an SME IV. Due to the length of time it took me to swap them across I couldn't really do an A - B comparison. However, I did feel the Acutus sounded better with the SME, it certainly did not sound worse, of that I am sure! And if I'd bought the SME in the firts place I'd have saved a lot of money as at the time of purchase the Graham was about £1000 more expensive!