One of the more expensive offerings on the market TC Electronic is the first name in polyphonic tuning (which allows you to tune all strings at once), and its latest incarnation is its best pedal tuner yet. The third entry in the PolyTune line boasts a built-in BonaFide Buffer, which offers players the choice between all-analogue buffered bypass and true bypass, adjusted via internal DIP switches. Buffered bypass is useful for boosting a signal along long cable runs or large pedalboards. Elsewhere, the pedal packs the same features as the PolyTune 2, including an ultra-bright LED display, polyphonic and chromatic tuning modes and a +/- 0.02-cent accurate strobe tuner. More info: 2. D'Addario NS Micro Tuner.

No polyphonic tuning Headstock tuners don’t get much smaller than this, but the NS Micro Tuner doesn’t sacrifice functionality thanks to an easily adjustable screen, multiple calibration modes and even a visual metronome. It’s easy to attach to the front or back of your guitar’s headstock, too, and will be invisible to all but the most eagle-eyed of audience members. There's no problems fitting it to just about any instrument with a headstock, whether that's electric, acoustic, classical, bass, banjo, mandolin, ukulele or upright bass.

Its discreet appearance, low price and quick tuning response make it the best headstock guitar tuner around. Korg Pitchblack Advance. Some players may want buffered bypass Korg's Pitchblack design has been refined many times over its eight-year lifespan - its and editions being the most notable - but with the Pitchblack Advance, the company reckons it's crafted 'the ultimate pedal tuner'. Key among its new features is a 60-hour battery life from alkaline nine-volts, as well as the ability to limit power supply interference via 'software control'.

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The pedal's slanted design offers improved visibility, aided by high-brightness colour LEDs, which nearly double the size of the note name display and are easily viewable in all light conditions. Accuracy in strobe mode is +/- 0.1 cents, while other meter display modes include regular, half-strobe and mirror mode. True bypass switching is also onboard, as is a low-noise dedicated DC out to share a 9V power supply with other pedals. Arthur rubinstein chopin collection. More info: 4.

Boss TU-3 Chromatic Tuner. Samodeljnij zatvor dlya melkashki. No polyphonic function Boss created an industry standard with the TU-2 pedal tuner in 1998, and its successor offers a number of improvements on the classic format. The TU-3 is quoted at +/-1 cent over a 23-segment LED display, which means it tunes more accurately.

Other functions include drop tuning up to six semitones and bass tuning up to three flats. A new high brightness mode means that maximum current draw is up from 55mA (TU-2) to 85mA.

Using the recommended Boss supply and a PCS-20A daisy chain, the TU-3 will also pass power to a total of 200mA to up to seven other pedals. Boss is resisting true bypass switching, which may be an issue for the tone-obsessed, but the usual Boss buffered output helps when using long leads and numerous pedals. Read the full review: 5.

In-app purchase required for increased accuracy Available for both iOS and Android, Fender's first ever app aims to deliver an intuitive, easy-to-use interface that makes it easy for newcomers to get their instrument in tune, while also covering basic tone tips, including strumming and setting up amps. The app detects notes from acoustic guitars and amplified electrics, and offers auto tune, chromatic and manual tune modes, including alternate tuning options and the ability to create custom tunings.

Additional in-app purchases add a more visually precise Pro Tuner, metronome and drum beats, plus scale diagrams and chord finder. More info: 6. TC Electronic PolyTune 2 Mini. No option of buffered bypass A downsized version of the sequel to TC Electronic's groundbreaking polyphonic tuner, the PolyTune 2 Mini allows players to tune all strings simultaneously, while a chromatic strobe option offers 0.1-cent tuning accuracy. True bypass switching, an ultra-bright LED display that adapts to different lighting conditions, and the option of up to five semitones flat tunings only sweeten the deal, and make this the mini pedal tuner of choice when pedalboard space is at a premium.