Sometime after Make magazine Volume 4 came out, I built the circuit board for a CMoy headphone amplifier. I tried to fit the amp in an altoids tin as the article suggested, but with the larger capacitors I used it was just a little too big. I put the completed board aside for a while, until a friend bought an iPod shuffle. The clear plastic box the iPod came in proved to have plenty of room for the CMoy. I just wish I’d been a little more organized with the wiring.