Shahinian Obelisk vs VandersteenTreo


HI fellow ’goners.
I own the Shahinians, thinking of upgrading to the Treos. The Obelisks sound a little smallish for the room... And the room is not square, it's a big living area of a house, with access to the second floor's roof. 
Will this be an upgrade or just a sideward move?
Room approx 60m2, driven by Musical Fidelity A5.5, 250wpc at 8Ohm (thinking of replacing this one too).
Mostly jazz and acoustic music, less frequently - classical and pop.
Thanks!

ja_zz
Jazz
apples to apples
not oranges
had you both RCA  and XLR external types
you would of seen what I mean
the Atlas run in XLR will sound best because it's a true Balanced amp.
enjoy
JohnnyR
@audioconnection ,
Well, I don’t have the XLR HPFs. Just the RCA.
The sound changed once I had the amp replaced,  sounds a bit mellow now. Need to re-tune the bass section, too, like you @tomic601 and @audioconnection suggested.
Great to have your wisdom and help,  gents.