I’ve only just started playing with it this morning but Rumble definitely ads depth and let’s you feel your mix in more detail. I can see this really helping with sounds sharing the same space, Pushing you to fit things together that you can feel but maybe not hear. I like to use the small speaker on op-1 and Z but when I start producing bass sound I am quickly pulled in with my ear pinned up against the speaker to really sense the low end, or I’m forced into using headphones. Though I like the commitment to producing on the small speakers because if you can make it loud on a small set you bet your dollar it’s gonna rock on some heavy equipment. Something tells me this rumble will really help focus on bottom end engineering when outside the vicinity of studio woofers and monitors. Top line is I think we’re more likely to do something about things we’re aware of, And the rumble helps bring the low end to our attention. Awesome module By Teenage Engineering!