Jadis JA30 Mk2, how great???

@samhvcc Like Charles1dad just stated, the Sony SS AR1 is not that efficient a speaker, if you are even considering that the JA30Mk2 won’t be enough power for them, then the SE 300B will only lead to one thing...Major disappointment!
Matching the amp to the speaker is a major factor when acquiring both pieces...how many folk have bought a very inefficient speaker ( or one with a horrible impedance drop) and then acquired an amp that cannot drive the load and been disappointed. Conversely, how many folk have bought/owned a low powered amp and then acquired a speaker that cannot be driven by said amp..very easy to do! ( Usually a costly mistake in both instances!).

As an standard audiophile I owned numerous equipment, Sony & Jadis are just bought recently! My Sony was intended to be driven by my now owned Esoteric Grandioso M1 mono actually. And I paired them with great success! But now I just want to try the JA30, trying how it would go with my Sony.The result, is obviously not a good matching couple, for sure. My newly bought JA30 was supposed to drive a pair of smaller bookshelf, targeting at Franco Serblin Accordo or ATD admonitor premiere, which I am still looking for the right one...

It makes perfect sense that the Big Esoteric mono blocks would be a very successful pairing driving the Sony SS AR1 speakers. High current capable transistor amplifiers are what the Sonys were meant for. The Grandioso's output power doubles as the load impedance is halved all the down to 2 ohms. The Sony dips to below 3 ohms at certain lower frequencies.

Jadis JA 30 paired with the Sonys will not exploit the potential excellence of either product IMHO. The Jadis can display sonic/musical brilliance with properly chosen speakers.
Charles

The JA30Mk2's with the Franco Serblin Accordo's would probably be a great match up. 
Agree 100% with the post above by charles1dad. 

So if wonder if the SE300B will sound as great if power/speaker sensitivity wasn't be a concern in this regard. Very interest to try the 300B as well for full range high sensitivity speaker.