Choosing the right guitar tuner can significantly impact your playing experience, from live performances to meticulous studio recordings. This shootout compares three leading contenders: the Boss TU-2 and TU-3, the Peterson strobe tuner, and the TC Electronic Polytune. We delve into the accuracy, speed, build quality, and additional features of each tuner, offering a detailed analysis to help you determine which best suits your needs and budget. Whether you prioritize simple, reliable tuning for gigs or require the ultimate precision for intricate intonation adjustments, this review provides the insights you need to make an informed decision.This comparative review examines the core functionalities and performance differences between these popular tuners. We assess the accuracy—measured in cents—comparing standard and strobe tuning modes, analyzing both speed and precision. Beyond accuracy, we explore the build quality and longevity of each model, as well as the additional features and user-friendly aspects that contribute to the overall user experience. Finally, we offer a concluding recommendation, acknowledging that the "best" tuner ultimately depends on individual playing style and priorities.
Pros And Cons
- Very accurate (up to 0.1 cents)
- Multiple tuning modes (bass, guitar, chromatic)
- Overview mode shows tuning of all strings
- Includes buffer
- True bypass mode available
- Different size options available
- Option for always-on display with mute function (requires internal switch change)
- Very accurate (up to 0.1 cents)
- Strobe tuning mode
- Various display color options
- Sweetened tunings
- Option for always-on display with mute function
- Durable
- Reliable
- Accurate up to 1 cent
- Includes buffer
- True bypass mode available
- Durable
- Reliable
- Simple to use
- Includes buffer
- True bypass mode available
- Accuracy up to ±3 cents
Read more: Top 4 Red Guitar Tuners
Standard Tuning Mode vs. Strobe Tuning
Most clip-on tuners and phone apps utilize a standard tuning mode, indicated by a needle or dot centering when in tune. This is simple and effective for daily use.

However, strobe tuners, like the Peterson, offer a different approach. They display the tuning deviation as a continuously moving line, providing arguably more precise readings.

The Boss and Polytune pedals incorporate both standard and strobe modes, allowing for flexibility depending on the user's needs and preference for tuning accuracy.
Accuracy and Real-World Application
The Boss TU-2 claims accuracy within ±3 cents, while the TU-3 boasts ±1 cent. While technically less precise, the TU-2's accuracy is generally sufficient for live performances.

The Peterson and TC Electronic Polytune offer exceptional accuracy, up to 0.1 cents. This level of precision is particularly beneficial for meticulous setup tasks like intonation adjustment.

For most players, the difference between ±1 cent and ±0.1 cent might not be audibly significant in a live setting, but it makes a difference during detailed guitar setup

Strobe Mode Comparison Test
A direct comparison of all tuners in strobe mode reveals subtle differences. The less accurate Boss TU-2 settles quicker, while the Peterson and Polytune show more sensitive movement, reflecting their higher accuracy.

Even though the Boss tuners indicate in-tune slightly faster, all tuners ultimately achieve the same level of accurate tuning.

This demonstrates that while higher accuracy is available, it's not always essential for all playing situations.

Build Quality and Additional Features
The Boss pedals are renowned for their rugged build quality. The reviewer's 25-year-old TU-2 testifies to their durability.

The Peterson and Polytune also appear well-built and sturdy, though their long-term durability is yet to be observed by the reviewer.

Both the Polytune and Peterson tuners offer additional features such as bass mode, alternative tuning options, and screen customization settings.

Conclusion and Recommendations
The choice depends on individual needs and budget. The Boss pedals offer a reliable, durable, and readily available solution for everyday tuning and live performances.

The Peterson and Polytune provide higher accuracy and additional features, beneficial for detailed setups and recording studio work. Their added functions justify their price point.
Ultimately, each tuner offers excellent tuning functionality; selecting the best option is a matter of personal preference and prioritizing required features.