TL;DR
Elektron announced Outbox 8 at Superbooth in the spring, almost as an afterthought. On September 9 it started shipping: $349, eight 1/4-inch outputs, 48kHz/32-bit converters, works over Overbridge with Digitakt, Syntakt and Analog Rytm — and it doubles as a MIDI-to-CV converter for modular. It also works with any class-compliant USB audio device, so it isn't Elektron-only.
The problem it fixes
Here's what happens when you make a beat on a groovebox. Everything sounds right in the box. Then you need to deliver it, and the box has one stereo pair on the back. So you either bounce every track one at a time, or you plug into a computer and run Overbridge, which is exactly the thing you bought the box to avoid.
Outbox 8 gives you eight mono or four stereo outs straight from the hardware. Kick on one, snare on two, hats on three, sample on four, bass on five. Route them to a mixer, to outboard compression, to an interface with more inputs — however you work.
Why it matters if you sell beats
A 2-track is a lease. A trackout is a sale. Artists and engineers pay more for stems because they can mix around the vocal. If your setup is hardware-first, the stem delivery step has been the bottleneck. This removes it without changing how you make the beat.
The CV side is a bonus for anybody with a modular case: sequence from the Elektron box, send pitch and gate out as analog. One cable fewer, one less piece of gear on the desk.
The honest read
It's $349 for a breakout box. If you're in the laptop-and-DAW lane, you don't need it. If you're a hardware producer who sells trackouts, it pays for itself on the first two sales.