I've bought a Arturia Beatstep for this exact purpose. 16 programs with 16 knobs.
I also use it for the ARP2600 and the Moog Module Sequencer btw.
One question on this if I may, let's say you have the 4 gated sequencers set up with 4 programs, one for each sequence, then after changing the knob values (ie programming a sequence on the Rev2) on the Beatstep, does it save those new values when pressing STORE? So that you can then change program to edit another sequence, and then go back to the first program and catch up where you left off... Let's say I have all knob values set to 0 on the Beatstep, I then change knob 1 to a value of 64, press STORE, change program and back again, when I turn knob 1 again, does it send a value of 65 (64+1) or 1 (0+1)?
I asked this on the Beatstep forum but got no answers.
The manual isn't very informative either: "Since you can’t change most of the MIDI settings for the controls without using the MIDI Control Center, the main reason you would want to use the STORE button in CNTRL mode is to re-order the presets due to a last-minute set change or something like that."
"most"... not mentioning what it actually DOES save. I shake my head, literally.
Sorry for hijacking the thread!