I bought minidsp ears and a quality sex doll head which i painted black, put on a pedestal, and will put small electret mics in its ears. I also sealed her lips shut, so the mouth hole is filled with air and becomes a cavity of sorts similar to nasal/mouth/sinuses - at least that's what I hope. I got a new one real cheap compared to what professional heads cost. Also the canal is really short and when you put your fingers inside her eyes bulge / pop out. I can't see how that would be a pleasurable experience if used for it's intended purpose. Bought a crapton of rectangular bar magnets, thin mylar films, have a small cnc machine, and extrusion and resin printer, and I know how to do woodwork and a bit of metal working too. We'll see what I manage to do. I sold my hd800, but kept my lcd2 and sr-l700 so I'll have something to compare with. I'll update this thread as I go, I expect it will be a very slow process.