Detail 01
B0–B7 tuning range
The tuner covers notes from B0 through B7.

Independent shopping perspective
The Electro-Harmonix X9 is a rechargeable clip-on tuner for fast, readable tuning at practice, rehearsal, performance, or recording sessions. Its high-contrast display and responsive operation keep the tuning check direct, while no-mar pads provide a secure grip designed to protect the instrument finish. Choose Chromatic, Guitar, Bass, Ukulele C, or Violin mode, set A4 anywhere from 430Hz to 450Hz, and recharge through USB-C with the included cable. Auto-power-off helps preserve its stated battery life.


Strong match
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.

Detail 01
The tuner covers notes from B0 through B7.
Detail 02
A4 calibration can be adjusted across that range.
Detail 03
The stated maximum battery life is up to 15 hours.
Detail 04
Recharge the tuner with the supplied USB-C cable.
Detail 05
The pads are designed to grip securely while protecting the instrument finish.
Final check

Product questions
Straight answers to the questions shoppers most often ask about this product.
It offers Chromatic, Guitar, Bass, Ukulele C, and Violin modes.
No. It has a rechargeable battery and includes a USB-C cable.
Yes. A4 is adjustable from 430Hz to 450Hz.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.