HD's are the same amp.. the question should be... do I want 2sp or 4 spaces in the amp rack.
I am not sure how the XTi2 are in comparison with the Itech-HDs... but the Itech4000 vs XTI6000, its a night and day difference with the IT4k outshining the XTI in anyway shape or form.
Matt, the decision would mostly be based on what I can afford, or not.
In the meantime, I wrote to the RCF distributor and got back these answers :
For the V218 :
Xmax is 11.5mm
Measurement was free field.
Recommended amp is theQPS9600Intereseting. I need to hear them at a good gig.
Regards,
Sidhu