I found it in a tweet and I was pretty sure it was photoshopped silliness but people were acting as though it was a real thing. I had to google to confirm what's what...
Teenage Engineering's tiny handheld TX-6 mixer offers an instrument tuner | Engadget
It also has built-in synth and sequencer capabilities.
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I feel like people do read manuals, but it's cheaper not to include manuals so corporations don't. And it's just another part of the whole general economic decline as they chase that ever distant profit.