I've found two great solutions from Oyadie and Acoustic Revive,
and got great result with Quartz damping!
I didn't need to buy anything new as i already had the stuff.
Once in a while i get bored and do trail and error with the "Junk" I've accumulated over the years.
Acoustic Revive SIP-8Q (with QR-8 Quartz Resonators),
they have been plugged to the Overture for a couple of months now and when i unplug them, there is a sort of "Fuzziness" to the sound.
odd, but now i can't listen to the amp without them being plugged in as they add some sort of "Cleanliness" to the SQ.
I think the QR-8 Quartz Resonators have more do to with it then the SIP-8 termination.
Oyaide INS-BS + Oyaide INS-SQ,
I've tried just the INS-BS under the amp, 5 of them, as the Overture have five feet.
Didn't notice or felt anything special so back to the "junk" box they went.
A few months have passed and i got bored again and thought maybe i try a INS-BS + INS-SQ (smoky quartz) combo and for my amazement the effect was immediate, something definitely has change now!
SQ has gotten a bit more refined, tighten, better bass control..
Simply put the Overture got a bit more engaging and musical