Tuners are essential devices used by musicians to accurately calibrate the pitch of their instruments. They allow musicians to ensure their instruments are in tune, which is crucial for performance and practice.

Product Data
Tuners come in various types including clip-on, pedal, and app-based options. They measure the frequency of the sound produced by the instrument and display the corresponding pitch. Common measurement range is from A0 (27.5 Hz) to C8 (4186 Hz) with a tuning accuracy of +/- 1 cent.

Reference Price
The reference price for tuners can range from 15 to 150 USD depending on the type and advanced features. Basic clip-on tuners generally cost around 15 to 30 USD, while more sophisticated pedal tuners can go up to 150 USD.

Product Classification
Tuners can be classified into several categories:
1. Clip-on Tuners
2. Pedal Tuners
3. App-based Tuners
4. Rackmount Tuners

Product Features
Key features of tuners include LED or LCD displays for easy readability, switchable tuning modes for different instruments, and various pitch calibration options. Some tuners also come with built-in metronomes and USB connectivity for software updates.

Product Uses
Tuners are primarily used by musicians to ensure their instruments are perfectly tuned for rehearsals, performances, or recording sessions. They are suitable for a wide range of instruments, including guitars, violins, brass, and woodwind instruments.

Precautions
When using tuners, ensure the device is calibrated correctly before tuning. Keep the tuner away from extreme temperatures and humidity to avoid damage. It is also advisable to use tuners in a quiet environment to prevent background noise from interfering with the tuning process. Tag: Previous_one：Tubes
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