Regarding organ action specifically - that is to say, a non-velocity-sensed note that triggers near the top of the key travel - I can recommend my Roland VR-09, which you can either think of as a cheap 61 key synth device with a keybed that provides correct organ action as well as a set of standard B3 drawbars oh and also it does a pretty damn good B3 sound too,
Let’s try that again. It’s actually a really really great value, if there are any organ-capable midi controllers out there they are upmarket and expensive, so probably this is gonna be the best value, period. And you absolutely do get stage-grade emulation of the classic organs (Hammond, Vox, Farfisa) that those famous keylords were playing. There is a VR-730 with one more octave, same engine.
BUT THERE’S MORE
These models are also very hackable using CTRLR, a program used to build computer interfaces for midi devices:
https://v-combo.webspace.rocks/vr-software
Basically, the VR devices do not play well with other midi devices out of the box, they want to be kings of their own universe so you can’t send Program Change to them - which you would definitely want to do, if you were using them as a controller for one or more external devices, because when it’s in organ mode you get flat, high velocity on every note, and if you want velocity sensitivity you’ll need to switch it to Piano or Synth mode, and by default you can’t do that.
I have not done the packet sniffing yet, but CTRLR sends the required sysex to make that happen in the regular course of its business, so I’m pretty sure it’ll be reasonably trivial to sort out how to make the zynthian send those messages as needed for a given chain, but I’ve been working 15 hour days all summer so I ain’t had time fer nothin
But anyways, I’m a bit of a B3 fan so this has been a strong part of my focus as I’ve taught myself keys, and these devices seem like the only budget solution, you go straight from this to buying a Hammond XK5 essentially, so pretty much the price goes up by an order of magnitude.
Edit: oh yeah, along with the “does organs right” thing, by default out of the box you can stack maybe two patches on top of each other, and a lot of functionality is difficult, a bit of it impossible, without using Roland’s available software controllers.
With CTRLR, you can do stuff like, stack 7 patches up on the keybed, while also playing stuff on a General Midi device from an external keyboard/sequencer, you can get up four (!) keyboard zones vs only two in the default UI… these are very powerful devices, with the CTRLR software telling them what to do. More sound patches that are in the processor but not in the UI at all.
Edit 2: The Piano sounds on the VR devices,they SUCK. Suck-diddley-uck Flanders.
Edit 3: I keep forgetting cool CTRLR features: there is also a “Synth” version of the interface which basically takes the internal synth engine and makes all the parameters realtime tweakable via the gui or, I assume, midi piped through ctrlr. The built-in firmware does a decent enough job with the synth patches, you can access LPF cutoff with one of the drawbars for instance, but with the addition of the ctrlr software it’s a full-on synthesizer.
Did I mention CTRLR and the VR panels are all free? Some folks make CTRLR panels for other devices and charge for em, but not the guy who did the VR stuff. Genius.