Consider the amp's sound, not just it's ability to "drive" the Hales. The Hales are terrific speakers, but they are lean sounding. You should consider an amp that will give the sound a little meat-on-the-bones. FWIW, the WhatHifi review describes the Yamaha as "taut/slightly bright". Not a good pairing IMO.
A Good Match?
I've been trying to match an integrated amp with my Hales Rev. One speakers. Here's what I came up with: Yamaha A-S500.... very well reviewed. 85wpc. The Hales have sensitivity of 87db. Any opinions as to whether the Yamaha will efficiently drive the Hales? If you are familiar with my other threads on this subject, you'll know I'm on a budget regarding the amp. Thanks for any and all advice. Mike