Well, this is in no way an extensive review of the Rumble Stage, but I received it a few hours ago, four hours and 6 sore fingers later , I am on preset #76/100 and had to drop the bass, turn around and write this just to express how cool this amp is:
I tried it with my old and trusted Ibanez ATK, which is a pretty versatile sounding active bass imo and tried to leave all pre-amp pots in the middle on the bass.
I was very curious about how the "coloring" of the sound would work without any help from the bass and man did it deliver...
There are definitely presets that made me frown like "that Audiorage one ain't sounding like rage or audio-slave", but then surprised myself sounding much like early days Flea with the "Under the bridge" preset and had to play every RHCP song I knew. The same happened for "in Bloom" and more. I can see that very useful for covers or to quickly find a sound based on known bands/genres.
There are a lot of presets I will not care for, but there is definitely more than a third of them that are on point and will definitely reuse or fine tune for more customization and that is a lot more effects that I can pack into a set list.
In terms of Cab emulation, like many people I read in this thread, I mostly liked the original Rumble V3 and the emulation of the GK. Not impressed by the Bassman or Orange stuff, but they didn't impress me back then so we're good

. I need to spend more time with the other ones.
For the FXs, the Flanger, envelope filter, chorus etc. are very good and I was able to recreate the perfect match to the sound I was getting from my physical pedals. The amount of control on each effect is impressive and even gave me more controls than on my pedals. Yes, this is no analog, but honestly I couldn't tell the difference.
The compression seems to work very well, so I think I might return many of my newly purchased pedals since they have now become redundant.
I disapprove of most overdrives/distortions in general, but found a pleasant amount of good usable ones that seemed to conserve low end and were to my taste. Sadly none will replace my Alpha Omega Ultra, which has such a unique range of tones and that I keep for the really nasty stuff.
I have not tried the amp at mid-high volume yet, but I really dig the clean tones I am getting so far. The headphones sound good. I just noticed some noise in the headphones, that went away once I stopped cranking the volume all the way up on my active bass pre-amp.
Very very pleased so far as it meets all the points I was trying to cover:
- Very light. After a knee surgery, I cannot lift heavy gear for a while and when I compare equal wattage from back in my old days, the Rumble Stage is not even half the weight. I can totally manage the gear on my own.
- It simplifies greatly the setup in the studio or live, bye bye pedal board, pedal addiction and faulty patch cables, I can now fit all the cables and gear I need in my case, with the amp in the other hand, I unload it all in one trip (not true of you get the extra cab), and that matters a lot to me when parking is complicated.
- The myriad of effects is just fun. I understand that I will end up using only a fraction of them daily, but I really appreciate having the possibility to feed my creativity with a bit of randomness and the constraints of some effects. This amp makes me want to play more and I doubt this will fade anytime soon. I already went though many effects I wanted to get in the past but couldn't afford. I didn't do the math, but that's definitely an immense value added.
I do see one major issue with using this amp as a workhorse for gigging; if for some reason your amp is not working or just not there at the gig and need to have certain effects in your set list, you end up without a DI and without your effects, but the same can be said for a pedal board and usually DI boxes are made available at gigs. But ultimately if you end up playing in places where you are asked to just plug into a DI box to the PA system, you will need your amp on the stage every time. This can be an issue to some, but I think the amp's footprint is small enough that it could fit on any stage.
Alright, going back to it, I'll post pics soon after I finally take the tags off!
Like @Dookieshoes said, I now have to play every instrument in the house through this amp
Cheers!