I have heard the anthem. It sounded so good I bought one today actually.
I have been auditioning amps to pair with the kef ls50. I wanted something on the warm/analog sounding side. I auditioned the arcam a19, peachtree nova125se, rega brio-r with/without rega dac and a line magnetic 216 tube amp. The anthem sounded the best in my home. The bass was so real and it warmed over the sometimes harsh kef.