Heard them briefly and the Pass Labs amplifiers made them sound instantly better than the rest of the MoFi series. Running those class D amps with lthe sourcepoints the past two years at AXPONA was not doing the speakers justice. They had a dry, brash overtone.
With the Pass Labs they came alive and had a true audiophile sound.
Get a nice robust Class A or AB amp and any of them will sound awesome and are recommended in their range.