--- product_id: 2240466 title: "BOSS TU-3 Compact Chromatic Tuner" brand: "boss" price: "¥34489" currency: JPY in_stock: true reviews_count: 13 category: "Boss" url: https://www.desertcart.jp/products/2240466-boss-tu-3-compact-chromatic-tuner store_origin: JP region: Japan --- # Accurate to +/- one cent pitch detection 21-segment LED meter for precise tuning Tank-tough stompbox body for rugged durability BOSS TU-3 Compact Chromatic Tuner **Brand:** boss **Price:** ¥34489 **Availability:** ✅ In Stock ## Summary > 🎶 Tune like a pro, perform like a legend. ## Quick Answers - **What is this?** BOSS TU-3 Compact Chromatic Tuner by boss - **How much does it cost?** ¥34489 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/2240466-boss-tu-3-compact-chromatic-tuner) ## Best For - boss enthusiasts ## Why This Product - Trusted boss brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Unmatched Durability:** Built in the iconic BOSS stompbox chassis, engineered to withstand the rigors of live performances and touring. - • **Silent & Signal-Smart:** Automatic mute during tuning keeps your sound clean on stage, plus it powers up to seven BOSS pedals for streamlined rig setups. - • **Stage-Ready Precision:** Tune with pinpoint accuracy using a 21-segment LED meter that shines even under harsh outdoor lighting. - • **Versatile Tuning Modes:** Switch effortlessly between Chromatic, Guitar/Bass, and Flat tuning modes supporting 7-string guitars and 6-string basses. - • **Visual Tuning Confidence:** Accu-Pitch Sign function provides instant visual confirmation when your instrument is perfectly in tune—never second guess again. ## Overview The BOSS TU-3 Compact Chromatic Tuner is the industry-standard pedal tuner trusted by professionals worldwide. Featuring a bright 21-segment LED meter with adjustable brightness, it delivers ultra-precise tuning accurate to +/- one cent. Its rugged stompbox design ensures durability for live gigs, while versatile tuning modes and the Accu-Pitch Sign function guarantee flawless pitch verification. With silent muting and power supply for multiple pedals, the TU-3 is the ultimate companion for guitarists and bassists who demand reliability and precision on stage. ## Description Product Description Bringing the legendary stomp pedal quality and ruggedness to the tuner world. The world’s top-selling stage tuner, the BOSS TU-2, evolves and improves with the debut of the new TU-3. Housed in a tank-tough BOSS stompbox body, the TU-3 features a smooth 21-segment LED meter with a High-Brightness mode that cuts through the harshest outdoor glare. Choose between Chromatic or Guitar/Bass tuning modes, and enjoy visual pinpoint tuning verification with the Accu-Pitch Sign function. • 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 From the Manufacturer TU-3 Chromatic Tuner Bringing the legendary stomp pedal quality and ruggedness to the tuner world. The world’s top-selling stage tuner, the BOSS TU-2, evolves and improves with the debut of the new TU-3. Housed in a tank-tough BOSS stompbox body, the TU-3 features a smooth 21-segment LED meter with a High-Brightness mode that cuts through the harshest outdoor glare. Choose between Chromatic or Guitar/Bass tuning modes, and enjoy visual pinpoint tuning verification with the Accu-Pitch Sign function. • 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 Review: Double duty pedal, tuner and a splitter - When I'm playing at home, I play with a Peavey Vypyr amp. Those amps have terrible tuners. Never seems to pick up the correct note on my guitar. This tuner is much better. Easy configuration, you can set it for guitar or chomatic or flat steps down, etc. The interface is super easy to read. I personally like the style where it looks like the LEDs are spinning right/left for sharp/flat, but they have the standard off from center tuning that most tuners use. All in all, this is a great tuner pedal, and I'm very happy with it. It does what it does very well. The thing I really like about this tuner is that there is an output and a bypass. Output gets cut when the pedal is active. If you are playing live, this is the one you will want to use. Bypass never gets cut. It's great for at home or if you are tuning somebody else to your instrument. But there's another awesome use for it; you can use it as a splitter and run your signal through 2 amps. This is fantastic for recording. Setting one amp up for the low end and another amp up for the high end and then mixing them together in the studio software makes for a very full sounding recording. If you want to run the same effects, put the tuner last, if you want to run different effects, put the tuner first. Review: Strong and acurrate - Great classic pedal from Boss! Always accurate, Suitable for string instruments, great for live performances. ## Features - Tune your guitar or bass on stage with the TU-3, successor of the BOSS TU-2, the world’s top-selling stage tuner - Housed in a tank-tough BOSS stompbox body, the TU-3 features a smooth 21-segment LED meter with a High-Brightness mode that cuts through the harshest outdoor glare - 21-segment LED meter with brightness control - 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004D8KX7K | | Amperage | 85 milliamps | | Best Sellers Rank | #788 in Musical Instruments ( See Top 100 in Musical Instruments ) #1 in Guitar Signal Path & Pedal Tuners | | Brand | BOSS | | Brand Name | BOSS | | Color | White | | Connector Type | USB | | Controls Type | Knob | | Customer Reviews | 4.8 out of 5 stars 2,525 Reviews | | Global Trade Identification Number | 00700315930183, 00761294409664, 04957054409661 | | Hardware Interface | USB | | Item Dimensions | 4 x 3 x 6 inches | | Item Dimensions L x W x H | 3.85"L x 2.65"W x 6"H | | Item Part Number | TU-3 | | Item Type Name | BOSS TU-3 Chromatic Floor Tuner for Guitar and Bass | Industry-Standard Performance | Tank-Tough BOSS Stompbox Body | 21-Segment LED Meter | Accurate to +/- One Cent | Accu-Pitch Sign Function | | Item Weight | 390 g | | Manufacturer | BOSS | | Manufacturer Part Number | TU-3 | | Model Name | TU-3 | | Model Number | TU3 | | Number of Items | 1 | | Number of Packs | 1 | | Power Source | Corded Electric | | Product Dimensions | 3.85"L x 2.65"W x 6"H | | Signal Format | Analog | | Style | Basic | | UPC | 700315930183 065491929964 270050113276 761294409664 714573528174 411378170163 714573526569 600599646742 602003603693 783627010866 | | Unit Count | 1 Count | | Voltage | 9 volts | | Warranty Description | 90 days. | ## Product Details - **Brand:** BOSS - **Color:** White - **Item Weight:** 390 g - **Product Dimensions:** 3.85"L x 2.65"W x 6"H - **Style:** Basic ## Images ![BOSS TU-3 Compact Chromatic Tuner - Image 1](https://m.media-amazon.com/images/I/71jZx+rFzuL.jpg) ## Questions & Answers **Q: can this tune a saxophone??** A: Saxophones absolutely need to be tuned every time you take off the mouth piece or with temperature changes such as going from indoors to outdoors on a cold night (marching band). Tuning is done by shortening or lengthening the distance an the neck of the sax by moving the mouthpiece in or out. This tuner could be used to tune a saxophone if you have a cheap mic that has a 1/4". That said there are less expensive tuners with built in mics that would better suit your purpose. Please note though that no matter what tuner you buy, if it is set to concert pitch (440Hz A / piano tuning) you will want to transpose the notes from Bb (tenor) or Eb (alto) to concert pitch when tuning your saxophone. In other words when you play a C on a tenor saxophone it is a Bb in concert pitch. For alto a C is an Eb in concert pitch. There are some very expensive turners that you can change the tuning from concert pitch to other pitches but they are a waste of money since transposing is not difficult. Make a chart or download one if you struggle at first. Remember that your sax could be sharp on some notes and flat on others so check multiple notes and find the tuning where the most notes are in tune and those that are not are just a little sharp or a little flat. **Q: How does the TU-3 effect a fuzz face if it's placed a couple pedals away after the fuzz ? I assume it has a buffer like most Boss pedals.** A: It is buffered, but the buffer won't affect anything that comes before it. Since certain fuzzes don't "like" buffers, putting those before the tuner will work fine. Guitar > Fuzz Face > Tuner ( or any buffered pedal) > Amp **Q: Is this product adequte for a 10 string pedal steel guitar ? I was told to get a tuner that shows the frequency and I do not see a # on the display** A: This won't show the frequency in Hertz, but it will indicate pitch, and the 10 string pedal steel should be in its range. There is a dot on the display to indicate a sharp. **Q: Will this work when only plugging the input?** A: Yes ## Customer Reviews ### ⭐⭐⭐⭐⭐ Double duty pedal, tuner and a splitter *by T***N on June 17, 2015* When I'm playing at home, I play with a Peavey Vypyr amp. Those amps have terrible tuners. Never seems to pick up the correct note on my guitar. This tuner is much better. Easy configuration, you can set it for guitar or chomatic or flat steps down, etc. The interface is super easy to read. I personally like the style where it looks like the LEDs are spinning right/left for sharp/flat, but they have the standard off from center tuning that most tuners use. All in all, this is a great tuner pedal, and I'm very happy with it. It does what it does very well. The thing I really like about this tuner is that there is an output and a bypass. Output gets cut when the pedal is active. If you are playing live, this is the one you will want to use. Bypass never gets cut. It's great for at home or if you are tuning somebody else to your instrument. But there's another awesome use for it; you can use it as a splitter and run your signal through 2 amps. This is fantastic for recording. Setting one amp up for the low end and another amp up for the high end and then mixing them together in the studio software makes for a very full sounding recording. If you want to run the same effects, put the tuner last, if you want to run different effects, put the tuner first. ### ⭐⭐⭐⭐⭐ Strong and acurrate *by J***N on May 28, 2026* Great classic pedal from Boss! Always accurate, Suitable for string instruments, great for live performances. ### ⭐⭐⭐⭐⭐ Tune while remaining plugged in to the PA with no sound bleed. *by L***T on May 16, 2026* Had this one for ten years before a buzz in the system. Got a new one, same great features, mainly that I can remain plugged in to the PA system and click the pedal to tune without being heard…An Essential feature for my church playing needs. And the leds are real is easy to read from the floor. It also doesn’t seem to care if other instruments are being played while tuning, only cares about my axe. Great pedal! ## Frequently Bought Together - Boss TU-3 Chromatic Tuner Pedal with Bypass - MXR Patch Cable 6 in|15 cm - 3 Pack (3PDCP06) - D'Addario Accessories Guitar Pedal Power Supply - DC 9V Power Cord - 9V Power Supply for Guitar Pedals - Pedalboard Power Supply - PW-CT-9V --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/2240466-boss-tu-3-compact-chromatic-tuner](https://www.desertcart.jp/products/2240466-boss-tu-3-compact-chromatic-tuner) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-14*