It’s the Knas Ekdahl Moisturizer - spring reverb with built in filter and LFO, the idea being you can ‘play’ it via the exposed springs as well as running stuff through it.
It sounds great, the filter is really good and you can switch the reverb pre or post filter (with the recommended mods).
I made some blistering noise riffs on an upcoming release by putting a magnet on the springs to excite them and modulating the filter with the LFO at quite high speeds.
It’s also got loads of I/O on the backside that come in handy.
And it makes my toast in the morning.