Anyone seen the new Fender Rumble Stage 800 combo bass amp introduced at NAMM recently? There's not much info available to the public yet, and some of what is brings questions, like this. The switch, shown below, on this new model is new to the Fender Rumble line and is perplexing to me. I'm familiar with internal auto-switching from 8 to 4 ohm operation without any manual, or external, switch. In combos the amp operates the internal 8 ohm speaker load alone at some fraction of the nameplate