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Boss TU-3 Chromatic Tuner Pedal


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  • Dawsons Delivery Delivery: £4.45
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  • Chromatic and Guitar/Bass mode (tune by string number, with support for 7-string guitars and 6-string basses)
  • 21-segment LED meter with brightness control
  • Robust, durable chassis to withstand plenty of stomping
  • Chromatic mode which uses the LEDs to give you precise note tuning
  • High-Brightness mode enhances meter visibility outdoors
  • Accu-Pitch Sign function provides visual verification when tuning is complete
  • Flat tuning is supported with Guitar Flat mode, which allows for drop-tunings up to six semitones below standard pitch
  • Includes BOSS' five-year warranty
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Delivery & Returns

Delivery to UK mainland addresses* is FREE on orders over £75 and up to 30kg. (As a guide, a standard electric guitar weighs approx. 3-5kg).

Delivery on orders below £75 are charged at £4.45!

Delivery to Northern Ireland, the Scottish Highlands & Islands, Isle of Man, Isle of Wight, Channel Islands and the Republic of Ireland. is weight dependant and will be indicated at the checkout

Delivery above 30kg to ANY location will vary according to weight and will be indicated at the checkout

LocationPriceStandard Delivery
UK mainland*FREE on orders over £75 £4.45 on orders under £751-3 working days
Northern Ireland, Scottish Highlands & Islands Isle of Man Isle of Wight Channel Islands Republic of Ireland£12.95 – any order value up to 30kg Over 30kg - please call1-3 working days
OverseasPlease call for detailsPlease call

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Improving on the world’s top-selling stage tuner, the Boss TU-2, the new TU-3 adds a smooth 21-segment LED meter with a High-Brightness mode that cuts through the harshest outdoor glare, pin-point accurate tuning all housed in a tough Boss stompbox body!

Choice Tuning

The TU-3 has modes for guitarists and bass players as well as other electro-acoustic based folk instruments. A chromatic mode utilises the on-board LED's to get you 100% correct to your desired note.

A flat-tuning mode can support up to six half-steps so that tuning 7-strung guitars and 6-string basses can also be done with ease.

Rugged construction

The Boss TU-3 Tuner pedal was designed to give you reliable operation night after night so it's built to deliver that without fail. So confident are Boss, that the TU-3 also comes with a 5-year warranty!

True bypass

A tuner should always be integrated into your guitar rig but when it's not in use, you don't want any additional noise tarnishing your performance. To this effects, the Boss TU-3 Tuner Pedal supports true-bypass for no noise, clicks or pops, simply tune up and get on with the gig.

An electric or electro-acoustic player should always have a means to get solid tuning with ease and the Boss TU-3 Tuner Pedal will deliver that for many years without fail.

Manufacturer BOSS
ModelTU-3 Chromatic Tuner Pedal
Dimensions (H x W x D) 59 x 73 x 129 mm
Weight 390 g
Tuning Range C0 (16.35Hz)–C8 (4186Hz)
Reference Pitch A4=436–445 Hz (1Hz step)
Tuning Accuracy ±1 cent
Power Supply DC 9 V: Dry battery 6F22 (9 V) type (carbon), Dry battery 6LR61 (9 V) type (alkaline), AC Adaptor (PSA series: optional)
Current Draw 30 mA (DC 9 V), 85 mA (DC 9 V, when High Brightness mode is on)
Accessories Owner’s Manual, Leaflet (“USING THE UNIT SAFELY,” “IMPORTANT NOTES,” and “Information”), Dry battery/9 V type (6F22)
Options AC adaptor: PSA series, Parallel DC cord: PCS-20A
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