ISTOVO 4X Guitar Tone Completer Sound Opener Simulates the Vibration of Actual Playing Guitar Reache Full Sound Potential -01

This revolutionary "play-in" simulator is based on the observation that the more an acoustic instrument is played, the faster it reaches its full sound potential (its "play-in" period). Simulates the effects of actual playing to bring out the best in your guitar. The tone completer has the guitar world buzzing! The tone completer applies direct vibration to a guitar at controlled frequencies, to the effects of actual playing. Many players report increased volume and dynamic range in their instruments after using the device between playing sessions.