Expert 140 PRO with Boenicke W5, need help!

[ogs]

I am quite certain Devialet will have to measure the regular 5W version. SAM is not easy to tweak even for those with full access to data, I believe.
5W is around 84dB/W/m so the low sensitivity is the only limiting factor if you like to play loud. Otherwise a 140 should have no problems driving the speakers. Others would need to comment on the synergy between amp and speakers ( I guess that is what you are actually asking about...)