Headphone mixer shelf (Samson QH4) and headphone holder

We needed a small shelf to hold a Samson QH4 headphone amp and two headphones to use in our recording studio. Made this in Sketchup and printed on a Makerbot Replicator+. Printed vertically with the mounting side down on the build plate and supports for the wings. Needed "helper disks" on the corners to prevent warping, my first print failed because of it which caused it separated from the build plate 3/4 the way done. Please note that you'll need a right angle 1/4" plug for the mixer because th