Ok, I misunderstood the power issue.
Pam's can work as a quantizer, but perhaps better to use it for tempo tasks. Doepfer has a very affordable double quantizer and good features.
https://www.modulargrid.net/e/doepfer-a-156
Regarding the mixer, I meant a mixer in the rack to mix CV signals. Matrix type for example
https://www.modulargrid.net/e/ai-synthesis-ai008-matrix-mixer-black
in only 10HP.