Max Cooper

To design the sound of Yearning for the Infinite, Cooper used both a trusted synthesizer and a new machine. He says most of the album was made using a Dave Smith Instruments Prophet 6, an analogue synth that builds on the iconic Sequential Circuits Prophet, and the new Moog One polyphonic analogue synthesizer. The Prophet 6 has been Cooper’s go-to synth over the last couple of years because of its ease-of-use and his familiarity with it. As he recalls, it got a bit more use on the album than the Moog One.

https://www.ableton.com/en/blog/composing-infinity-max-cooper-his-new-album/

In second picture Prophet 08 Module can be seen.

"Cooper also used another old standby, a Moog Minitaur, obtained years ago while playing shows in in San Francisco."

As seen on the picture, taken in his studio.

At 1:15 in this video interview, Max Cooper states:

The Trigon-6, again another Dave Smith (R.I.P.), has also become one of my favorites. It's much one of the more newer synths they've come up with and it's a similar level of complexity. Again, it's quite a simple synth but one that you can jump in and build and you don't get lost in the complexity.

To be honest, I hate patch diving and I hate, you know, menu diving, and having shortcuts. The synths that are my favorite ones, like those, there is no digital display. It's just, you know, you can do presets and it's just like an old-school LCD watch sort of display, but there's no menu diving, you don't need shortcuts, everything's there. You can just jam and play and you got this real tactile sort of interaction with it. And that's what I look for, to be honest, with hardware synths.

In this facebook post, we can see a keyboard with "Yamaha DX7" written on its back. At first we can think that it's indeed a Yamaha DX7, but when looking more deeply into the keyboard, we see that the layout is kinda weird, and with looking even better, on the keyboard, it's written DX7s.