CLS IIa's and Pass x150.5 - adequate headroom??

My Cls I -->IIa's have been in mothballs for 15 years or so but I am ready now to crank them up again.They have never had super electronics, but I am ready to drop some change on a new amp and preamp. I am looking at a Pass X150.5, but wonder if it has enough power for these speakers.

I have a 13 x 17 foot living room, and will be listening at moderate listening levels.

I plan on adding a small sub - ?? Rel 305??

I have not decided on tube vs SS for the preamp.

Actually I haven't decided on anything.

Does the X150.5 have enough punch?

Thanks,
David - Dallas

The Pass amps have pretty good headroom. Since you are going to use a subwoofer you have taken a good bit of the power requirements off the CLSllA.