Music-Boosting Mobile-Electronics Amplifier Woodworking Plan

Just slip your smartphone or mobile music player (speaker down) into the amplifier's base for noticeably louder and clearer sound. Paying homage to the gramophones of old, this passive amplifier is a fun and easy project, a great conversation piece, and the perfect gift for the gadget geek in your life.

Featured in
WOOD Issue 225, May 2014