I have an ID40 with back plate in perfect working order and Meridian box (the ID41 box) to send it in if anyone is interested. Will work in a 861 V4 or V6 I believe and a cheap way to add Sooloos integration.
Guide price lowered to �350 ono and I am located in Swansea if someone wanted to pick up instead.
Any questions then please ask.

861v8, HD621, MC200, Sony S790, Panasonic 850, Adam Audio Tensor Beta's front, Adam Audio Tensor C9 Center, Adam Audio Pencil rear, Rel Studio 111 Sub and room mover.
Second system: MC200 direct to DSP5500 Mk1