Jadis JA30 Mk2, how great???

I would believe the JA80 MKII should be able to cover a wider range of speakers choice. 

Hi samhvcc,
I haven't heard the Jadis JA 80 but given the description of them on the Jadis web  site leads me to believe that their sonic signature would be very similar to the smaller JA 30 mono blocks. The JA 80 doubles the number of  power output tubes.  Each mono block is heavier by nearly 30 pounds.

That's a quite substantial weight gain and suggests larger power and output transformers and a lager more robust power supply. One would expect the JA 80 to be a better match for the Sony speakers as compared with the smaller Jadis JA 30. So in essence you gain power  (And presumably more current capability) with an identical or very similar circuit design.
Charles 

@samhvcc   The JA80 Mk2 is going to give you more power and therefore headroom than the JA30Mk2. It is going to be a much better match to your Sony's. As to whether it will sound better, on your speakers ..yes. However, if one can utilize the lower powered JA30Mk2, then IME the lower powered amp typically sounds better than the higher powered brethren. On my speakers, the JA30Mk2 are preferred over the JA80mk2's. Horses for courses.

Understand, let me think of it seriously, thanks! 

I have finally ordered the JA80MKII, try to evaluate the differences between 30 ,other than the power itself! Since i was told the 80 is another legend comparing with the 30. It may takes some more months to have my 80 arrived. Anyway, the JA30MKII absolutely has enough power for my Sony's after my Sony has been running in for a few more while! Of course  i believe larger power will be better for my main speaker.