It's the difference between playing in a garage, and playing in a cathedral. The Acousti-Phonic adds a depth to your magnetic sound without altering your tone. People phone Graph Tech and say, "I installed the Acousti-Phonic, and after I got off stage, a guy came up to me and said, 'I know you've got something amazing in that guitar, but I can't figure out what it is!'" A lot of players use the Acousti-Phonic to enhance their electric sound, not just to make an electric guitar sound like an acoustic guitar.