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Boss TU-3 Chromatic Tuner Pedal

B&H # BOTU3 Mfr # TU-3
No Longer Available
Product Highlights
  • 21-Segment LED Meter
  • Brightness Controls
  • 7 String Guitar & 6 String Bass Support
  • DC Output Jack Powers Up To 6 Pedals

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
Power Supply 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)
Boss TU-3 Chromatic Tuner Pedal
  • 9 Volt Battery
  • Owner's Manual
  • 1-Year Limited Warranty
  • REVIEW SNAPSHOT®

    by PowerReviews
    BossTU-3 Chromatic Tuner Pedal
     
    4.9

    (based on 8 reviews)

    Ratings Distribution

    • 5 Stars

       

      (7)

    • 4 Stars

       

      (1)

    • 3 Stars

       

      (0)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    100%

    of respondents would recommend this to a friend.

    Pros

    • Durable (4)

    Cons

      Best Uses

      • Practicing (5)
      • Concerts (4)
      • Everyday (4)
        • Reviewer Profile:
        • Experienced (4), Professional musician (3)

      Reviewed by 8 customers

      Sort by

      Displaying reviews 1-8

      Back to top

       
      5.0

      One of the best at what it does

      By Steve D

      from Boston

      About Me Experienced

      Verified Buyer

      Pros

      • Sturdy

      Cons

        Best Uses

        • Concerts
        • Everyday
        • Practicing

        Comments about Boss TU-3 Chromatic Tuner Pedal:

        Great tuner, solid construction. Not much else to say!

        Share this review

         
        5.0

        Tried and true

        By Free Range Folk

        from Jim Thorpe, PA

        About Me Professional Musician

        Verified Buyer

        Pros

        • Compact
        • Sturdy

        Cons

          Best Uses

          • Concerts
          • Everyday
          • Practicing

          Comments about Boss TU-3 Chromatic Tuner Pedal:

          The newest generation of Boss Chromatic Tuners. Works great with our upright bass(KandK Pickup), mandolin(Fishman Transducer Pickup), banjo(Kavanjo Pickup), Acoustic Guitars(K and K Pickup, LR Baggs Ibeam Active Pickup), and Electric guitar.

          Share this review

           
          5.0

          Pretty much the standard

          By Corey the Scot

          from Los Angeles, CA

          About Me Experienced

          Verified Buyer

          Pros

          • Sturdy

          Cons

            Best Uses

            • Concerts
            • Everyday

            Comments about Boss TU-3 Chromatic Tuner Pedal:

            This pedal is pretty mush the standard when it comes to tuning pedals. I've owned a TU-2 for years now and figured I should get an upgrade. The response is much fast to the note I'm playing and doesn't "jump around" to other "notes" like the old pedal. I like the improved smaller LED lights and "in tune" indication.

            Share this review

             
            5.0

            Great Product, Great Price!

            By Pdub

            from Fort Worth, Tx

            About Me Experienced

            Verified Buyer

            Pros

            • Compact
            • Easy To Carry
            • Good Protection
            • Sturdy
            • Stylish

            Cons

              Best Uses

              • Concerts
              • Everyday
              • Practicing
              • Travel

              Comments about Boss TU-3 Chromatic Tuner Pedal:

              Great tuner pedal!! Best price I could find for a new one!

              Share this review

              (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.

                Share 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.

                  Share 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

                    Share 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.

                      Share this review

                      Batteries & Power

                      Show more >

                      Required item: Batteries (not included) are required to power this device.

                      Duracell -  9V Alkaline Battery (Coppertop)
                      • You Pay: $3.69
                       
                      Watson -  9V Rechargeable NiMH Battery (250mAh)
                      • You Pay: $7.95
                       
                      Audio-Technica -  AT8390-6 1/4" Male to 1/4" Male Instrument Cable - 6'
                      • You Pay: $8.95
                       

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                      • You Pay: $79.95
                      Usually ships in 7-14 business days i This is a Special order item. Est. arrival at B&H is 7-14 business days (subject to availability). Your order will be charged at time of shipment.
                       

                      Cable Management

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                      Pearstone -  0.5 x 6" Touch Fastener Straps (Black, 10-Pack)
                      • You Pay: $6.99
                       
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