Thanks for the suggestion on the balanced cable, Jim. I've not tried that with my 114ce... no buzz, but it sure seemed weak and was prone to feedback when plugged into my Bose L1. That V-Cable looks like a good solution with the ES-GO pickup, since there is no volume (or tone) control with that pickup... unless it adds to "the buzz."
Sure enjoying the Mini.
Best wishes,
Captn Jim