H-evolve
Member
I just downloaded their free IRs, then bought the Vintage 30 pack.
In comparison to the 3SA Mesa 4x12 the Celestion Plus 4x12 somehow sounds "throatier", has a lot more low mids growl that cuts through the mix really well, while the 3SA impulses sound smoother.
From all the Impulses I have tried (Rosen Digital, OwnHammer, Two Notes, 3 Sigma Audio and Kazrogg), I think the 3 Sigma were my least favorite. They sound relatively scooped, a bit too much bottom and a bit edgy for me.
The fact that you mention the Celestion Plus have more "low mids" is definitely a potentially selling point for me, since as I said, the 3 Sig are too scooped for my taste.