This is my finding also.  Made the entire amp way more versatile and usable, still recto DNA but leaned toward its SLO origins.  I think it sits well right between an SLO and stock Recto IMO.
I don't really understand the "sounds neutered" or "its not pissed off" comments when you compare a stock Recto (without a boost to fix the stock tone) to this, its like the sound of a lard blimpo crunching down on fried chicken compared to the sound of a well tuned Lambo/Ferrari/Porsche 

  At 19:12 in the video, I used a boost also.  Sounded great too.  Not bad for having all the controls at noon for the most part of the video.