Just finished printing one on an Alunar A8 out of Hatchbox ABS on a 200x200 piece of glass with BPT for adhesion. 100% scale. 15% infill, 4 outlines and first/bottom layers. Came out pretty well and I like the finish on the front from the layers printing flat. Added about an ounce of lead birdshot to the base as it was printing that gives it a nice heft.
It fits my Turtle Beach X12 headphones pretty well but anything larger will have trouble I'd bet. I'll happily print this again, but at probably 110 or 125% scale.
Layer 2 or 3 starts printing in-air which probably causes the issues some people are having. I had to drop the model through the build platform by about 1mm to avoid the problem layer. Simplify3D wouldn't support the problem area, either. The model doesn't look particularly well prepared for 3D printing.