Minimal – that’s the way I like it too.
I usually play at small venues and use an AER Acousticube 3 in combination with AER sub 10 (bass extension for the Polysubbass). For larger ones I sometimes use the two channel routing preamp StepABout made by BassLab in Kassel, Germany.
For additional effects I still take my Alesis Quadraverb.
That`s all I need for my Avalon-Sound.
All the best,