Frederick plays a Yamaha APX-SPL2 Guitar, which is a special limited edition guitar made by Yamaha, can be played acoustically and can be plugged in. The guitar has been used to make practically every recording and was used to write every song by Frederick Roussel. It can be heard throughout his music, sometimes with very little effects, and sometimes it can barely be identified due to effects. He writes about his guitar on the GEAR section of his website.