Name: BOSS TU-3 Chromatic Tuner
SKU: 6822
Availability: InStock

BOSS TU-3 Chromatic Tuner

Tuning Features:

Tuning Range: From C0 (16.35 Hz) to C8 (4186 Hz), covering the entire range of most instruments.
Reference Pitch (A4): Adjustable from 436 Hz to 445 Hz in 1 Hz steps, allowing you to fine-tune the reference pitch to suit your tuning needs.
Tuning Accuracy: +/- 1 cent, providing highly precise tuning that ensures accurate intonation.

Modes:

Chromatic Mode: A mode that allows tuning to all notes, offering maximum flexibility for all instruments.
Chromatic Flat x2 Mode: A chromatic tuning mode with an additional flat tuning range.
Guitar Mode: Preconfigured for standard guitar tuning.
Guitar Flat x2 Mode: A mode allowing for flat tunings on guitar (e.g., drop tunings).
Bass Mode: Configured for bass guitars, including low-end tuning.
Bass Flat x3 Mode: A bass-specific mode with additional flat tunings.

Display Modes:

Cent Mode: Displays the pitch in cents for precise tuning adjustments.
Stream Mode: Likely shows a dynamic, stream-like visualization of the tuning process, helping the user easily see whether they’re sharp or flat.

Input/Output:

Nominal Input Level: -20 dBu, suitable for most line-level signals.
Input Impedance: 1 M ohm, ideal for high-impedance instruments like electric guitars or basses.
Nominal Output Level: -20 dBu.
Output Impedance: 1 k ohm.
Recommended Load Impedance: 10 k ohms or greater, ensuring compatibility with most amplifiers or audio equipment.

Bypass:

Buffered Bypass: Ensures that the signal remains strong and unaffected when the tuner is bypassed, preventing signal degradation.

Controls:

Pedal Switch: Used to toggle the tuner on or off.
MODE Button: Switch between different tuning modes (chromatic, guitar, bass, etc.).
STREAM/CENT Button: Switch between display modes (Stream mode or Cent mode).

Power Supply:

Battery:
- Carbon-zinc 9V battery (6F22) or
- Alkaline 9V battery (6LR61).
AC Adaptor: PSA series (sold separately).
Current Draw:
- 20 mA under normal use.
- 80 mA when High Brightness mode is on (likely for better visibility in bright environments).
Expected Battery Life:
- Carbon-zinc: Approx. 5 hours.
- Alkaline: Approx. 21 hours.

Connectors:

INPUT Jack: 1/4-inch phone type for connecting your instrument.
OUTPUT Jack: 1/4-inch phone type for sending the signal to an amplifier or next device.
BYPASS Jack: Likely for external control of bypass (for example, using a footswitch).
DC IN Jack: For connecting an external AC power adapter (PSA series).
DC OUT Jack: Likely allows for chaining multiple pedals or devices together.

Accessories:

Included: Leaflet with safety and usage information, 9V Carbon-zinc battery (6F22).
Optional: AC Adapter (PSA series), Parallel DC cord (PCS-20A, DC Plug x8).

Size and Weight:

Width: 73 mm (2-7/8 inches).
Depth: 129 mm (5-1/8 inches).
Height: 59 mm (2-3/8 inches).
Weight (including battery): 390 g (14 oz).

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The Gold Standard in Stage Tuning

The TU-3—the world’s best-selling stage tuner—unites trusted BOSS tuning technology with our iconic compact pedal format. Top performers everywhere rely on this robust stomp for fast and flawless tuning night after night, thanks to its high-visibility meter, simple operation, and road-tested durability. The versatile TU-3 also includes a mute function, tone-saving buffer, and power distribution capabilities, making it an essential utility tool for every player.

Features

Sharp 21-segment LED meter with brightness control
High Brightness mode enhances meter visibility when playing outdoors
Accurate to +/- one cent
Accu-Pitch Sign function provides visual verification when tuning is complete
Chromatic mode for tuning to any pitch
Guitar and Bass modes for tuning by string number, with support for 7-string guitars and 5- and 6-string basses
Flat tuning options support down tuning up to six semitones below standard pitch (Guitar mode) and three semitones below (Bass mode)
The output automatically mutes when the tuner is engaged, allowing for silent tuning on stage
DC output jack for distributing power to other pedals (requires optional PSA-series adaptor and PCS-20A parallel cable)
BOSS five-year warranty

Leading the Industry for Nearly Three Decades

In 1998, BOSS introduced the TU-2, the world’s first pedal-based chromatic tuner. This game-changing product was an instant smash, making stage tuning easier and more convenient than ever before. The TU-3 followed in 2009, building on its popular predecessor with increased tuning precision, an enhanced LED meter, and expanded modes. Regularly seen on stages across the globe, TU pedals continue to be the go-to tuners for everyone from local players to famous touring pros.

Precision Tuning Made Easy

The TU-3’s sharp, 21-segment LED meter takes the guesswork out of tuning, offering both Cent and strobe-style Stream options for your preference. Our innovative Accu-Pitch Sign function speeds operation on stage by displaying a bright streaming indicator when you’ve reached your target. The default Chromatic mode automatically detects any incoming pitch, while selectable Guitar and Bass modes provide quick, string-based tuning with support for extended-range instruments and down tunings.

Pitch-Perfect Performance

The TU-3 packs a ton of practical features into its compact size. Engaging the pedal activates a mute function, allowing you to tune silently and keep your rig quiet during instrument changes and set breaks. High Brightness mode cuts through glare for improved meter visibility on sunlit outdoor stages. And when powering the TU-3 with an optional PSA-series adapter, you can use a PCS-20A parallel cable to distribute power to other pedals on your board.

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Type	Solid State
Number of Channels	1
Total Power	7W
Speaker Size	1 x 4″ speaker
Effects	Delay
EQ	3-band EQ
Inputs	1 x 1/4″ (instrument), 1 x 1/8″ (aux in)
Outputs	1 x 1/8″ (headphones/rec out)
Headphones	Yes
Power Source	9V DC 350mA power supply (sold separately) / 6 x AA batteries
Height	7.12″
Width	9.06″
Depth	4.6″
Weight	2.6 lbs.