Had a solid hour of fun with the Bass before I popped it open.
I was hoping to add a MIDI jack to get MIDI out since it is clearly labeled:
I couldn't find space in the case to place a DIN jack so I am going to order a couple stereo 1/8" jacks to break out the MIDI that way.
I didn't do anything too crazy; just broke out the marked test points on the PCB
The jacks fit perfectly
Interesting that the SMD LEDs are on the other side of the PCB and they shine through holes
Used the ground point from the battery
Left an extra hole for the MIDI
The jacks let me patch into both waveforms from all 3 oscillators, and the raw signal out of the VCO, VCF, and VCA.