Trevor:
Sadly, you are over a year late.  I had a loaner WOPL for a few weeks, summer of last year.  I am using a Yamaha A/V amp in two-channel power amp mode, and it has good low-end power.  It makes me happy, powering Vandersteen 2C speakers.  I am trying to integrate a subwoofer, and that will take time.  Twangfest may yet happen this fall - would you like me to keep you updated?  It's an AK thing, lots of fun.
Laz/Dennis