A feature I’d like to see on the Vintage Warmer (or any other) is a mono mix blend option. I love the mono-stereo toggle that you’ve built in, but often wish I could bring up the VW as a mono signal while the source remained stereo. I have tried different routing schemes etc. but phasing is always a problem. But then again with phasing an adjustable delay in micro increments could really boost or cut frequencies in a wonderful way. Stereo-mono width blend would also be handy.
You folks at PSP make insanely great products that will some day take over the world!!