Automatic Guitar Tuner with Motorized Peg Winder for Acoustic, Electric & Bass | String Tool | Thomler

Tune Any String Instrument in Seconds—No Manual Turning

Forget twisting pegs by hand. This motorized tuning tool listens to your string, spins the peg to the exact pitch, and stops automatically. It combines a clip-on chromatic tuner and a battery-powered string winder in one device, so re-stringing and tuning take half the time. A built-in vibration sensor reads pitch even in noisy rehearsal rooms or on stage, making it ideal for guitarists, bassists and ukulele players who need fast, accurate tuning between songs. Rechargeable via USB-C, this compact tool slips into any gig bag and works with standard tunings and alternate voicings alike.

Why You Need This

• Hands-free pitch correction: Strike a string and the motor winds the peg to perfect pitch without you touching the headstock.
• Two modes in one: Auto mode tunes; manual mode acts as a high-speed string winder when you're changing strings.
• Vibration detection: Picks up pitch through the peg itself, filtering out background chatter and drum kits.
• Works with alternate tunings: Drop D, Open G, DADGAD and any custom voicing you program.
• USB-C rechargeable: No disposable batteries—charge from any phone adapter or laptop.
• Fits multiple instruments: Six- and seven-string guitars, four-string bass (Neo model), soprano through baritone ukuleles, and nylon-string classical guitars.

Built for Musicians Who Value Speed and Precision

Whether you're a beginner learning open chords or a session player swapping between guitars mid-set, this tool removes the guesswork. The motor stops the instant the string hits the target frequency, so you never overshoot and snap a string. When you're changing strings, flip to manual mode and watch the winder spin each peg in two seconds flat. Because it reads vibration rather than airborne sound, it works flawlessly in loud environments where clip-on tuners usually fail. Lightweight and pocket-sized, it travels easily to rehearsals, gigs and lessons. We ship free anywhere in the US, and you have thirty days to decide if it fits your routine.