Thank you. ... ... I wanted to get the brand new Rumble 800 combo but I think I want the digital doohickeys of the stage model so I just canceled my order for the analog model. I see a used $700 Stage 800 for sale that I will likely spring for. It seems like it can do everything I’d ever want. I think I want to get a Rumble 115 to eventually go with it. How much more cabinetry can the Stage 800 handle? I was thinking ideal might be Stage 800 on top of a 210 on top of a 115
Whoa! vo! That is a 180 degree Bat-turn, for sure!!

The Stage and the new 800 COMBO are use the same power amps, just different pre-amps.
Beware of using the 300 continuous watt rated 115 cab alone with either 800 continuous watts rated amp, which could send 400 continuous watts to it when turned up!!! The 210 cab, however, was originally rated 350 continuous watts when introduced for use with the Rumble 500 head, which could put out 350 continous watts into an 8 ohm cab.
But, with the introduction of
the Stage 800 combo using exactly the same speakers as the 210 cab, it became clear that 350w rating was very conservative (if not premature). Obviously that 210 cab can
actually handle 400 continuous watts when used with either 800 combo! But, both combos can drive
two 8 ohm combos, putting "just" 267 continuous watts into each! So, the 115 is safe when used with either combo and
another 8 ohm cab.
How 'bout two 115s with your Stage 800?
Yes, if you use and like all the "digital doohickeys", as I most certainly do, then the Stage 800, or the Studio 40 in my case, can be your do-it-all Swiss Army bass amp.

But, you gotta actually try it to see if it really is "your cuppa tea". To start with, browse the
Stage & Studio manual (identical pre-amps, way different power amps) linked in
the Stage & Studio section of
your Rumble Club Wiki page. That'll give you a baseline for getting to know the physical box. Then check any other links in that section, such as the TONE APP sub-section about remote controlling your Stage!!!
Finally, use
The Club's Rumble LT25, Studio 40 &Stage 800 sub-thread for discussing these great amps and leaving
this main Club thread less complicated for all the non-modeling Rumblers, please.
Hope this helps.
.