YS 90 DX strobe compatibility for dual strobe DSLR rig

I am setting up a DSLR and have a single YS90DX strobe from my first camera rig. I would like to incorporate this strobe that I already own into the new rig with a second strobe. My question is, do I need a second YS90DX proper or will a YS90 DUO TTL or YS90 Auto work in concert with the older YS90DX? I am running a Fuji S2 so I have some interest in preserving the TTL function that is available with this camera choice.

Thanks for the insight.

Best regards,

Mike

If you are using an S2pro, then any TTL strobe will work. YOu can get the YS90DUO, but I'm not sure about the Auto - does it have a TTL function?

Cheers

James Wiseman

Yes it does.

Why don't you want to get a second 90DX?