I think if you’ll think about what you lose and miss, you’re looking at it the wrong way. Since they’re so different, just see what the Tempest does, and if that’s more right for you.
A few things, where it really stands out from the A4 -
Each pattern has eight bars, and each kit connected to that pattern holds 32 different patches. Yep. With six voices multi-timbral and some clever voice allocation, you can switch between these 32 patches in one eight-bar pattern.
There are no fx. Ok, there’s a dist and a comp and some kind of midi delay, but really, where it counts, this machine is dry. That adds plenty to its character. But for coloring, it’s like a patch of the Nevada desert. Not a bad thing, in my book, but miles from what an A4 can do with delays, chorus and reverb.
It’s ridicilously funky to jam on. You’ll be banging on the pads for hours because it’s so fun. And when you take it on stage, the liveFX and beat sliders warp the oscillators way more into Octatrack land than what the A4 ever could do. As a live instrument, it’s just killer in terms of performance as well as sound manipulation.
Sound design is hands on, at least compared to the A4. It’ll be second nature for you, once you’ve learned the interface. And you’ll learn it in five minutes.
It’s raw, not always in a good way. There can be distances between the sweet spots and some heavy tweaking required when the voices start to take up headroom together. It doesn’t sound great from the box. Simple stuff can break it, such as just not keeping an eye on your volumes, messing with the compressor or just having a lot of low-end stuff fighting for the same space.
It does have paramlocks, though not nearly as flexible as on the Elektrons. A couple of values are fixed to locks - velocity, duration, pitch, a few more. Then there’s four additional ones you can assign to any value you like, the FX sliders. These can be recorded live, but also programmed step by step. The interface is messier than on an Elektron sequencer, but by no means a show stopper.
It has a unique sound. As much as I like the A4, it sounds like an extremely well executed, polished version of the familiar. The Tempest can take you to strange places. The A4 is more familiar, yet in a very welcome and exciting way.