I find it absolutely amazing that people who were considering very expensive amplifiers are flocking to see what the buzz is about this little company called Virtue. But make no mistake, every one of the Virtue amps make music.
If I remember correctly, that Sony ES line of speakers were power sponges- they really liked power to make them come alive. I would consider a One.2 and a 130w smps, then upgrade to a 10 amp power supply or batteries if you want even more. The sensitivity of your speakers is around average at 87dB, but the high current supplies will give you added bass punch, control, and dynamics, and more.