Doepfer A-138s Mini Stereo Mixer

Mixes audio or CV well enough - can add a small amount of gain but in general it sounds a bit softer to my ears than the direct signals do. Quite flexible for a simple module.

Pros:
- Good price, small size without feeling at all cramped.
- stereo which also means you can set up some more complicated performance routing with it if you're running a mono rig.
- mixes both CV and audio and you can use one side for each if you like or put some audio signal into the CV channel.
- has a bit of gain to spare beyond just mixing at unity
- Pots feel good and have a musical taper.

Cons:
- I feel like I can 'hear' it being in the path and I'm not usually fussy about this (I'm a pro studio engineer going back to the tape and console days and never hesitate to run things through console busses or submixes since I'm used to them being more or less invisible which I don't feel this is... I also use the two channel mixer in my Mother32 and a Malekko unity mixer those feel essentially invisible to me)