@Torq Soundsource was a great suggestion, just to try out the AU support I loaded Voxengo SPAN https://www.voxengo.com/product/span/ which is a spectrum analyzer to see how it works.
On this system, I have loaded UA Apollo driver and Softtube console plug-ins they all show up as well. Now I want to try with my Apollo plugged-in running track via a UA Roland Space Echo. ( a Spring Reverb and Tape Delay. ) plug-in for fun.
Thank you for pointing this out.
Span looking at Hans Zimmer 2049