Rapogee,
Ditto to Jfrech response. However I will add this additional experience. For W/P 7 & 8 and Sasha I did not find the V5xe to have enough gusto to effectively drive these speakers, particularly with R&R. I think you need a more substantial SS or nice tube gear. CJ and Nagra would work well as well as many others. You can search Audiogon for others experiences with these speakers and tube gear. I have listened to the V5xe and Sophia I combination and this was quite nice.
I have K5xe MP and MX-R combination with W/P Sasha with excellent results. My hope is to upgrade pre to Kx-R or Nagral in the not too distant future.