mixing Phantom Reactor 900 + Phantom II for stereo sound?

[controlclaudio]

Hi all,

I wanted to purchase another Phantom Reactor 900 for stereo sound, but I've noticed that it's obsolete and now it is called "Phantom II"... do you know if is it possible for a mix of phantom reactor + phantom II? 

And if it is possible... could you please help me out with what phantom II version should I purchase for stereo mode with my old phantom reactor 900?

Thanks a lot in advance for your help!