The Professional's Source 866.276.1435 / 212.502.6357

Boss TU-3 Chromatic Tuner Pedal

  • Click to see our price
  • B&H # BOTU3
  • Mfr# TU-3

Product Highlights

  • 21-Segment LED Meter
  • Brightness Controls
  • 7 String Guitar & 6 String Bass Support
  • DC Output Jack Powers Up To 6 Pedals

What item is right for you?

Ask our Experts!

866.276.1435
Live Chat

Remember the Essentials

Batteries or an external power supply is required but not included with this item.  Please be sure to purchase batteries or an external power supply that suits your needs. 

The TU-3 Chromatic Tuner from Boss is a stompbox-style instrument tuner that runs on a 9 volt battery or from AC power. You can plug in any type of guitar or bass and have its output plugged into an amplifier or another pedal. It offers precise and quick tuning with its 21-segment LED meter and note display.

For over a decade, the Boss TU-2 was one of the most popular tuners in the world. The TU-3 carries on the tradition, and adds many useful features that make it even easier to use. With the push of a button you can change the TU-3's operational mode to handle flat tuning guitars, 6 string basses, and more. The brightness of its LEDs can be changed to be seen in direct sunlight.

There are two separate outputs on the TU-3. One mutes the signal so no sound gets outputted when tuning. The other output doesn't mute the signal. Both outputs can be used at the same time, allowing you to pass the instrument's signal to more than one source. The TU-3 also features a DC output jack that enables you to power up to 6 other Boss pedals when using the separately available PCS-20A power cable.

21-segment LED meter with brightness control
High-Brightness mode enhances meter visibility outdoors
Accurate to +/- one cent
Accu-Pitch Sign function provides visual verification when tuning is complete
Chromatic and Guitar/Bass mode (tune by string number, with support for 7-string guitars and 6-string basses)
Flat tuning is supported with Guitar Flat mode, which allows for "drop" tunings up to six semitones below standard pitch
Tuner automatically mutes when the tuner is on
Supplies power for up to seven BOSS compact effect pedals (with optional PCS-20A cable)
Pitch Calibration Range C0 (16.35Hz) to C8 (4186Hz)
Reference A4 = 436 to 445Hz (1Hz step)
Accuracy ±1cent
Connectors 1 x 1/4" Instrument Input
2 x 1/4" Outputs
1 x DC In
1 x DC Out
Hard Disk Space DC 9 V Dry Battery, AC Adaptor (PSA-Series: Optional)
Dimensions (WxDxH) 2.9 x 5.12 x 2.4" (73 x 129 x 59mm)
Weight 14 oz (390 g)

REVIEW SNAPSHOT®

by PowerReviews
Boss TU-3 Chromatic Tuner Pedal
 
4.8

(based on 4 reviews)

Ratings Distribution

  • 5 Stars

     

    (3)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

REVIEWS

Reviewed by 4 customers

Sort by

Displaying reviews 1-4

Back to top

(1 of 1 customers found this review helpful)

 
4.0

Great Tuner - But Not True Bypass

By Darryl

from Palo Alto, CA

Verified Reviewer

Pros

  • Clear display
  • Easy To Use

Cons

  • Not true bypass

Best Uses

    Comments about Boss TU-3 Chromatic Tuner Pedal:

    This is a nice tuner pedal. My son owns one and I'm about to buy one but the review above stating this is a true bypass pedal is completely wrong. Like all other Boss pedals this has a FET buffer. Both the switched "OUTPUT" and the "BYPASS" output jacks are buffered. As can easily be seen by removing the battery or 9VDC supply power. If the pedal was not buffered it would continue to pass signal on the "BYPASS" jack without being powered--it does not.

    Comment on this review

    (0 of 2 customers found this review helpful)

     
    5.0

    A Must for Any Serious Guitarist

    By MPz

    from Southern New Jersey

    About Me Experienced

    Verified Buyer

    Pros

    • Bright display
    • Built like a tank
    • Easy To Use
    • Very accurate

    Cons

    • None

    Best Uses

      Comments about Boss TU-3 Chromatic Tuner Pedal:

      Bottom line: This is all you need in a tuner and why nearly every gigging guitarist has one on his board. The LEDs make 100% accurate tuning a no brainer. Plus, it's true bypass and built like a tank.

      Comment on this review

       
      5.0

      dependable

      By Jeff

      from Dothan, AL

      About Me Professional Musician

      Verified Buyer

      Pros

      • Good Feel
      • Good Pick Up
      • Good Tone
      • Solid Electronics

      Cons

        Best Uses

        • Jamming
        • Practicing
        • Rock Concerts
        • School Bands
        • Small Venues

        Comments about Boss TU-3 Chromatic Tuner Pedal:

        toughest stompbox tuner on the market

        Comment on this review

         
        5.0

        the industry standard tuner

        By MJQ

        from Boston, MA

        About Me Professional Musician

        Verified Buyer

        Pros

        • Solid Electronics

        Cons

          Best Uses

          • Jamming
          • Practicing
          • Recording
          • Rock Concerts
          • School Bands
          • Small Venues

          Comments about Boss TU-3 Chromatic Tuner Pedal:

          Every guitar and bass player should own this tuner.

          Comment on this review

          Displaying reviews 1-4

          Back to top

          Batteries & Power

          Required item:

          Duracell -  9V Alkaline Battery (Coppertop)
          • Price: $1.25
           
          Boss -  PSA-120S 500mA AC Adapter
          • Price: $19.99
           

          Cables

          Audio-Technica -  AT8390-6 1/4" Male to 1/4" Male Instrument Cable - 6'
          • Price: $4.99
           

          Cable Management

          Delta 1 -  46216 Ripgrip Cable Wrap (Pack of 2) (Black)
          • Price: $4.95
           

          What's in the Box

          Boss TU-3 Chromatic Tuner Pedal
          • 9 Volt Battery
          • Owner's Manual
          • 1-Year Limited Warranty
           
           
          See any errors on this page? Let us know.

          Close

          Close