Cool! You took the plunge on the new model. It's a great 'pro bassist working amp'. I've had many amps that sound better in the family room playing alone... but none that sound better with a horn section and a full rhythm section on a gig.
Some say the switch is very subtle, by the way. It has a huge effect for me at volume on a gig with a good quality bass. I really like the sound of the amp with the switch in the 'off' position most of the time. However, in ugly, boomy rooms, the switch up adds just enough grind, grit and mid presence to really make a difference.
We will look forward to your 'as usual' excellent review