Intellijel Designs Unity Mixer

It works as expected. I'm using the top half for raw VCO signals, and the bottom half for cv modulation, but it can be used however you like.
The model pictured here must be an older version. Now the jumpers for the -6dB attenuation are right at the back, so you don't need to disconnect the back PCB to access them (and the logo is just the robot head, not the torso).