Grado Hemp Limited Edition HeadphonesHigh Fidelity The first of its kind, hemp finds yet another purpose in The Hemp Headphone. A brilliant, warm, and precise sound rolled into a Limited Edition Grado. Expected to start shipping late June. Into the Unknown In our never ending pursuit to experiment with all types of woods and materials, we had the opportunity to build with hemp. We weren't sure how these hemphones would turn out, but to everyones surprise it quickly became a favourite