# BOSS TU-3 Chromatic Tuner Pedal

Pedal: The BOSS TU-3 is a compact chromatic floor tuner for guitar and bass, with a 21-segment LED meter, several tuning modes and a stompbox-style body. Its meter has a brightness control, and the listing claims accuracy to within one cent. The specifications include conflicting dimensions and power details, so check those before choosing a power setup.

- [Original product page](https://loonieperks.com/product/boss-tu-3-chromatic-tuner-pedal)
- [View offer](https://loonieperks.com/visit/boss-tu-3-chromatic-tuner-pedal)
- Market: CA
- Language: en-CA
- Currency: CAD
- Brand: BOSS
- Model: TU3
- Category: Books, Music & Hobbies > Musical Instruments
- Price: 125.95 CAD
- Previous price: 139.99 CAD
- Discount: 10%
- Price checked: 2026-11-12T20:34:24.216Z
- Rating: 4.6 / 5
- Reviews: 2450

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Chromatic and guitar/bass modes include string-number tuning, with support listed for 7-string guitars and 6-string basses.
- Guitar Flat mode supports drop tunings up to six semitones below standard pitch.
- The 21-segment LED meter includes brightness control. The listing also describes a high-brightness mode for outdoor glare.
- Accu-Pitch Sign provides visual confirmation when tuning is complete.

## Pros

- Multiple tuning modes cover chromatic tuning, string-number selection and drop tunings up to six semitones below standard pitch.
- A brightness-adjustable LED meter and visual tuning-complete indicator can help make status easier to read at a glance.
- Customer feedback describes the pedal as easy to use and well built.

## Specifications

### Identity
- Brand: BOSS
- Model: TU3
### Tuning
- Meter: 21-segment LED meter with brightness control
- Claimed accuracy: Accurate to +/- one cent
- Tuning modes: Chromatic and Guitar/Bass mode \(tune by string number, with support for 7-string guitars and 6-string basses\)
- Flat tuning: Flat tuning is supported with Guitar Flat mode, which allows for “drop” tunings up to six semitones below standard pitch
- Tuning confirmation: Accu-Pitch Sign function provides visual verification when tuning is complete
### Power and battery
- Power configuration: Corded Electric
### Dimensions and installation
- Dimensions listed: 10.2 x 7.6 x 15.2 centimetres
- Weight listed: 390 g

## Before you buy

- Listing details conflict or remain unconfirmed: dimensions are listed as both 9.8L x 6.7W x 15.2H centimetres and 10.2 x 7.6 x 15.2 centimetres. Power is listed as Corded Electric, while the details also state that 1 D batteries are required. Confirm the selected unit's measurements and intended power method before buying.

## A good fit for

- Guitarists and bassists who want a floor tuner with chromatic and string-number modes.
- Players using supported 7-string guitars, 6-string basses or drop tunings up to six semitones below standard pitch.
- Stage users who want a visible meter and visual confirmation when tuning is complete.

## Less suited to

- Buyers who need confirmed dimensions or a clearly documented power method without checking the listing first.
- Players looking for an effects pedal rather than a tuner. The listing's audio-effects field is not supported by the described tuning features.

## Customer feedback

Customer feedback is strongly positive about build quality, tuning performance, accuracy, durability and ease of use. That aligns with the listed stage-oriented meter and tuning modes, though customer impressions do not independently verify the claimed one-cent accuracy. The aggregate ratings are mostly five-star, but a smaller share are low ratings, so experiences are not uniformly positive.
- Positive themes: Customers describe the pedal as well built and easy to use.
- Positive themes: Customers report satisfaction with its tuning performance, accuracy and durability.

## Frequently asked questions

### Can the TU-3 tune bass as well as guitar?
Yes. The listing describes Guitar/Bass mode and support for 6-string basses, as well as 7-string guitars.
### How far does its flat-tuning mode go?
The listed Guitar Flat mode supports drop tunings up to six semitones below standard pitch.
### What indicates that tuning is complete?
The Accu-Pitch Sign function provides visual verification when tuning is complete.
### What power source should I plan for?
The listing identifies Corded Electric power but also says 1 D batteries are required. Those details conflict, so confirm the intended power method for the selected unit.

## Alternative options

- [YUEKO T2 \| Smart Automatic Guitar Tuner & String Winder \| For Electric Guitars, Acoustic Guitars, 12-String Guitars, Ukulele, Banjo, Mandolin \| 40+ Alternate Tunings \| USB Rechargeable](https://loonieperks.com/visit/boss-tu-3-chromatic-tuner-pedal)
- [Flatsons MT-41 Rechargeable Digital Metronome Tuner 3-In-1 Many Instruments \| Large Display, Easy to Use, Compatible with Guitar, Bass, Violin, Ukulele](https://loonieperks.com/visit/boss-tu-3-chromatic-tuner-pedal)
- [VPSUN DC 9V 1A Guitar Pedal Power Supply 5 Way Compatible with Donner BOSS Guitar Effect Pedals Daisy Chain Cables](https://loonieperks.com/visit/boss-tu-3-chromatic-tuner-pedal)
- [Donner Tuner Pedal, DT Deluxe Chromatic Guitar Tuner Pedal for Electric Guitar and Bass ± 1 Cent USB or 9V Power Supply True Bypass](https://loonieperks.com/visit/boss-tu-3-chromatic-tuner-pedal)
- [JOYO 10W Portable Guitar Practice Amp & Multi-Effects Pedal Combo Amplifier with Footswitch,OTG Recording, Bluetooth,14 Amp Models,3-Band EQ,36 Drum Patterns & Looper \(JAM Buddy II, Orange\)](https://loonieperks.com/visit/boss-tu-3-chromatic-tuner-pedal)
- [JOYO Buffer & Tuner Guitar Pedal, ±1 Cent Accuracy with LED Display & Analog Buffer Circuit, DC Output, True Bypass \(JF-19\)](https://loonieperks.com/visit/boss-tu-3-chromatic-tuner-pedal)
- [STRICH Guitar Tuner Pedal with Large Color Screen, Precision Chromatic Drop Tuning, 430-450Hz A4 for Electric Guitar, True Bypass, Silver](https://loonieperks.com/visit/boss-tu-3-chromatic-tuner-pedal)
- [SONICAKE QME-20 Smart Box - Multi Effects Pedal for Guitar with 130+ Effects, NAM/IR Support, Looper, Built-in Tuner/Metronome, Portable Effects Processor with USB Audio Interface, Stereo Output](https://loonieperks.com/visit/boss-tu-3-chromatic-tuner-pedal)
- [BOSS RC-1 Loop Station Pedal \| Industry Standard Simple Looper for Guitar, Bass, Keyboards & More \| 24-Segment LED Indicator \| 12 Minutes of Record Time \| Record, Playback, Overdub, Undo & Redo Loops](https://loonieperks.com/visit/boss-rc-1-loop-station-looper-pedal)
- [Donner DP-1 Effect Pedal Power Supply 10 Isolated DC Output for 9V/12V/18V Pedal With Blue LED Indicator](https://loonieperks.com/visit/boss-tu-3-chromatic-tuner-pedal)
- [BOSS CH-1 SUPER Chorus \| Classic Compact Chorus Effects Pedal \| Cystal-Clear Tone for Guitar & Keyboards \| Versatile Sound Shaping \| Mono & Stereo Connectivity \| Easy-to-Use Controls](https://loonieperks.com/visit/boss-tu-3-chromatic-tuner-pedal)
- [BOSS NS-1X Noise Suppressor \| Next-Generation Noise Reducer & Ultra-Fast Gate for Guitar, Bass & Other Instruments \| BOSS MDP Technology \| Reduction Mode \| Intuitive Operation \| Send/Return Loop](https://loonieperks.com/visit/boss-tu-3-chromatic-tuner-pedal)

## Add-ons

- [Elebase Guitar Patch Cables 6-Inch 3-Pack,6.35MM Effects Pedal Board Cord \| 1/4 Right-Angle Nylon Braided Instrument Audio Cable,Pedalboard TS Connector Wire for Amp/Amplifier,Mixer,Electric Bass](https://loonieperks.com/visit/boss-tu-3-chromatic-tuner-pedal)
- [BOSS SD-1 SUPER Overdrive \| Compact Overdrive Pedal \| Genre-Defining Sound & Feel \| Unique Clipping Circuitry Produces Tube-Like Characteristics \| Dynamic Tone Options \| Easy-To-Use Controls](https://loonieperks.com/visit/boss-tu-3-chromatic-tuner-pedal)

## Images

![BOSS TU-3 Chromatic Tuner Pedal — 1](https://loonieperks.com/i/3Hl-wYhbD1Jh2LWYHl83cna1Yn_fTUJN_3xidaIfbe1_7_Lbghr5QhpPHuUy28XkTl9uw7jmRllkXyAcFE7ivH3EBlqXrrPROub7RTzyqyE4V6HDrl2IHqIF.jpg)

![BOSS TU-3 Chromatic Tuner Pedal — 2](https://loonieperks.com/i/B1R6gEfL1YzdbEAw6HxZnaryxt_GeNbkqWAu94-yFWHLkSoV8EcLOgUsUbTVYquf41-gI8tbWC1HEUvanHqoCoIIA52kxeCD-5O6xQOcDRs9molb2nZC9-IA.jpg)

![BOSS TU-3 Chromatic Tuner Pedal — 3](https://loonieperks.com/i/2-QDGueTsFhZgL1ZbVcrMKbETqkYRpmrGSts_bMij_zqFGZs3FkLKUgKxutEEPDZnao2BbP-2vh_4FzIMOV4erBMwGlzzo6v8LqzcL6qUT5lTIgpo9RWBwWb.jpg)

![BOSS TU-3 Chromatic Tuner Pedal — 4](https://loonieperks.com/i/eGQ5khWv_gwIIEwIxr6wCMhv-PEEP7DgOEjbPvPKmjPGJJ_mGaa0F6EBk4ljxvq7zQonJqeIcstdqiLa_T07hG_9v02qZhFNEZVCSoFBNICpM8jXmaO3WXhW.jpg)

![BOSS TU-3 Chromatic Tuner Pedal — 5](https://loonieperks.com/i/Pd3bwoMchAfbHixIhujv9JAgIkiZbJCwk40dYq5TUqDQjDxJlk_LYPHL9BANQp03Se2-3i1UPbagO0yYwK0BQ96XTJGit9DVClbuZS4EWyYzcQs8l-rkJjz_.jpg)

![BOSS TU-3 Chromatic Tuner Pedal — 6](https://loonieperks.com/i/2rySHCl0UGEToikNYqeXQizxHGpWN7lgHZiXN2Myog4xXHtR6ECkNIaPXOM8-OQYqRIXaBrttCbKs9U3cAgpWsXDP-Sff36aTrNWLeIUXOXQodOeF6LUlFJ-.jpg)

![BOSS TU-3 Chromatic Tuner Pedal — 7](https://loonieperks.com/i/ZNp7XbELf9mTv16P3nSwCeafKIWBgTDnSIoXPddFkjHRQpMH8WoZjbS-XqfH3B_70L6tvvmne0wxfgvT2u2Hofz_d2LNC-Kl3TZ7mzqwjXFqQulgVWClw1as.jpg)