If you don't mind having the ‘fun' taken out of tuning up your guitar, then this little gizmo should save you a lot of time – a robotic guitar tuner. This isn't just a simple device that tells you whether your current tuning is too flat or too sharp, it actually listens and then tunes your guitar automatically! The motor inside it knows exactly how far to turn your tuning peg to get the perfect sound.
More info in the video below:
(Please note prices are subject to change and the listed price is correct to the best of our knowledge at the time of posting)