Ok, I have Sunray Pro Golds and they work with my WM08.  Here is the ($5 US) adapter I use: https://www.amazon.com/gp/product/B000068O6B/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1 The Pro Golds have two switches on the earcup where the cord is attached.  I put both in the 'up' position.  That gives the highest volume.