Boss TU-3S Chromatic Tuner

Compact Guitar and Bass Tuner Pedal with 21-segment LED Meter, Drop Tuning Support, and Guitar/Bass Mode

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Item ID: TU3S

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TU-3S Chromatic Tuner with EBS Patch Cables

Original price, crossed out: $124 and 99 cents, now $119 and 99 cents

TU-3S Chromatic Tuner with Power Supply and Cable

Original price, crossed out: $143 and 97 cents, now $129 and 99 cents

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Boss TU-3S Chromatic Tuner

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Gator Cableworks Backline Series Instrument Cable - 10 foot

$14.99

Gator GTR-PWR-1 Slim 9V 1700Ma DC Power Supply

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Q: Who is the Boss TU-3S Chromatic Tuner designed for?

The Boss TU-3S is a compact and reliable tuner pedal perfect for any guitarist or bassist looking to save space on their pedalboard. Its durable design and accurate tuning make it suitable for both new players and experienced musicians needing precise, quick tuning on stage or in the studio.

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Q: What tuning modes does the Boss TU-3S offer?

The TU-3S provides versatile tuning options, including Chromatic mode for general instrument tuning, Guitar mode, and Bass mode. It also features a Flat mode, allowing you to tune down by up to six semitones. The bright LED display ensures clear visibility in any lighting condition, making it easy to see your tuning status.

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Q: How accurate is the Boss TU-3S Chromatic Tuner?

The Boss TU-3S offers highly accurate tuning with a precision of 1 cent, ensuring your instrument is perfectly in tune. Its wide tuning range from C0 to C8 covers virtually any instrument. The clear LED display provides both Cent and Stream modes, giving you visual feedback for quick and precise adjustments.

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Q: What kind of power does the TU-3S require, and how does its bypass work?

The TU-3S requires a standard 9V DC power supply, which is sold separately. It features buffered bypass switching, meaning your signal remains strong and clear even when the tuner is off and part of a larger pedal chain. This helps prevent signal degradation over long cable runs.

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A Compact Tuner for Your Pedalboard

The BOSS TU-3S chromatic tuner pedal takes everything you love about the popular TU-3 and scales it down in size by eliminating its pedal switch. Beyond that, you get the same rock-solid tuning and innovative features that you've come to expect from the TU-3, such as an easy-to-read LED display and various tuning modes. Chromatic mode is ideal for tuning by note name, while Guitar/Bass tunes by string number - even for 7-string guitars and 6-string basses. Guitar Flat mode is tailor-made for Drop tunings. Always on and ready to go, the BOSS TU-3S is a pedalboard necessity!

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Tech Specs

Type: Chromatic
Format: Pedal
Display Type: LED, Cent, Stream
Reference Pitch: A4 = 436-445Hz
Tuning Range: C0-C8 (16.3-4186Hz)
Accuracy: ±1 cent
Tuning Modes: Flat, Guitar, Bass
Inputs: 1 x 1/4"
Outputs: 1 x 1/4"
Bypass Switching: Buffered
Power Supply: 9V DC power supply required (sold separately)
Power Usage: 35-95mA (in High Brightness mode)
Height: 2.25"
Width: 2.88"
Depth: 3.31"
Weight: 8 oz.
Manufacturer Part Number: TU-3S

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Reviews

4.7

Customer Photos & Videos

This is the same BOSS TU-3 super tuner you know and love, just minus the battery compartment (9v adapter operation only) and footswitch (as it is always on!) It is also a 9v power distributor.

This unit was perfect for myself because I needed a true bypass inline tuner before my amp. My Thunderfunk TBA-750 mutes at the input, so none of the outputs are tuner through sends. It sits at the rear of my rack, angled up and allows me to mute at the amp and tune easily. The TU-3s also provides power to a HPF and compressor for loop #1 in the rear of the amp rack case.

The TU-3s and OneSpot 9v adapter fit into a small Cannon 35mm camera lens case for travel...

Perfect!

The Boss Chromatic Tuner is what should be on your pedal board if you care about staying in tune. None better. The mini version takes up very little real estate and punches way above its weight class.

I have the Boss TU-3. Awesome tuner…. Unfortunately, you have to turn it on every time you restart your pedal board. I have a home studio and just use the non muted output. I've been looking into modifying the pedal to be always on, but Boss switches aren't mechanical, so it would be a real chore… then along came the TU-3S! Some people stress eat, I buy pedals instead. This thing trumps the last several purchases I've made. Nicely done Boss!

I want my tuner to be on all the time! Bamn!

A solid little unit. Easy to read in the dark with the brightness adjustment. Have not noticed any noise when added in the chain. Work well with Bass tuning by selecting the bass mode. Boss did a great job designing a solid unit with great features.

See also: Tuners, Boss, Boss Guitar Tuners

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Boss TU-3S Chromatic Tuner

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TU-3S Chromatic Tuner with EBS Patch Cables

TU-3S Chromatic Tuner with Power Supply and Cable

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