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🎶 Tune like a pro, perform like a legend!
The BOSS TU-3 Chromatic Floor Tuner is the industry-standard pedal tuner trusted by pros worldwide. Featuring a rugged stompbox body, a bright 21-segment LED meter for clear visibility even outdoors, and ultra-precise tuning accuracy within ±1 cent, it supports multiple tuning modes including chromatic, guitar, bass, and flat tuning. Its silent auto-mute function and durable design make it the ultimate companion for live performances and studio sessions alike.





| ASIN | B004D8KX7K |
| Amperage | 85 Milliamps |
| Best Sellers Rank | #1,074 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 2,478 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 Grams |
| Manufacturer | BOSS |
| Manufacturer Part Number | TU-3 |
| Model Name | TU-3 |
| Model Number | TU3 |
| Power Source | Corded Electric |
| Product Dimensions | 3.85"L x 2.65"W x 6"H |
| Signal Format | Analog |
| Style | Standard |
| UPC | 700315930183 065491929964 270050113276 761294409664 714573528174 411378170163 714573526569 600599646742 602003603693 783627010866 |
| Unit Count | 1.0 Count |
| Voltage | 9 Volts |
| Warranty Description | 90 days. |
W**N
Great tuner
I play three instruments in a Americana band. I want to cut the signal while I swap instruments and no feedback while the instruments not being used. The boss delivered, I can switch with no noise and tune on the fly. Great box!
A**R
Great tuner!
I had been using a Polytune, then started having some problems with it, so I got this as a replacement and really like it better than the Polytune, mainly because it gives you a much more precise reading, even down to cents as opposed to so many tuners that will tell you the string is in tune as long as the intonation is within an acceptable range of tolerance. So if one string is a little sharp, and the next string is a little flat, you got a problem! This tuner is sort of like an analog style that really lets you know where you're at. It is very silent, no click when you hit it. However, unlike the Polytune, you just hit one string at a time, which works for me. How can you go wrong with Boss?
W**K
Boss Bass Tuner. Tunes Basses.
Works at advertised, sturdy. Does the bass things with no issues.
A**R
Yes 🙌
Got this for my soon to be ex husband and he loves it. He uses it just about every day and it’s a game changer for him. Great quality and accuracy
P**N
Best Utilitarian Pedal!
Best utilitarian pedal ever! Everyone needs to tune, and this gets the job done efficiently and quietly! Worth it!
T**N
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.
J**N
Good, but maybe NOT the #1 choice for bass guitar.
It is built like a tank, it is easy to read- BUT- it is not stable or accurate enough for bass guitar from my experience. Takes far too long to lock in on low B and E strings. In live use it’s more of a get close and hope than assurance of solid tuning of lowest notes. If I fiddle with tone knobs and pickup selection it is a tad quicker, but just not practical for bass guitar in a live setting in my opinion.
E**N
Great tuner!
Love this tuner. I use every Sunday to mute and tune my guitar.
R**B
Top Notch Tuner
This is a great addition to your stomp rack. The tuner is super easy to use, has a number of tuning options and is super accurate. Could not be happier.
C**E
Qualité boss
Rien à redire sur cette pédale c'est du costaud et ça fait le taf qu'on lui demande c'est-à-dire accorder sa guitare ou sa basse, plusieurs modes disponibles et surtout on peut accorder sa guitare jusqu'à 6 demi-ton en dessous, comme toutes les pédales boss ça marche sur secteur ou sur pile 9 volts, achat indispensable sur son pédalboard. Il y avait un truc à redire je dirais que le vu mètre est un poil trop tatillon.
K**Y
The only tuner pedal you need + it will last a lifetime!!
The only tuner pedal you need + it will last a lifetime!!
樋**隆
素晴らしい
ダウンチューニングがサクサク出来て助かりました。
A**İ
Bitik pil sorunu..
İlk aldığımı arızalı diye değişime gönderdim. Gelen ürün de aynı.. iade edip tekrar aldım 3. Gelen ürün de aynı. Sorun piliymiş arkadaşlar. Piller bitik geliyor! Kutusu zaten açık kontrol edilip pil değiştirirse gönderilmeden kimse bu kadar uğraşmayacak. Pedala diyecek lafım yok boss işte..
Trustpilot
1 month ago
2 months ago