#1
Snark ST-8
Clip-on chromatic tuner · Clip-on design, chromatic (any note), full-color rotating display, 1% accuracy$10–$15 newBest for: Beginners, acoustic guitar, quick tuning, most affordable reliable tuner
The Snark ST-8 is the most popular clip-on tuner for acoustic guitar — it clips to the headstock, reads vibrations through the wood rather than requiring a cable connection, and displays accurate pitch on a color screen. At $10–$15 new (inexpensive enough that used isn't necessary), the Snark is the starting point for every beginner. It works on acoustic guitar, ukulele, bass, mandolin, and acoustic-electric. Simple to use: clip on, play a string, and the display shows whether you're sharp or flat.
What to check used: Clip-on tuners read vibration through the headstock, which means they pick up vibrations from nearby sound sources — tuning backstage in a noisy environment can produce false readings. For stage use, a pedal tuner is more reliable. Battery (CR2032 coin cell) lasts approximately 6 months of regular use.
#2
TC Electronic PolyTune 3 Mini
Pedal tuner with polyphonic mode · Polyphonic tuning (all 6 strings at once), mono/poly/strobe modes, true bypass, 0.02 cent accuracy$60–$90 usedBest for: Live performance, polyphonic all-string check, true bypass, mini footprint
The TC Electronic PolyTune 3 Mini is the best value pedal tuner — its unique polyphonic mode lets you strum all six strings at once and immediately see which strings are out of tune by their position on the display, making tuning between songs takes 5 seconds instead of 30. The strobe mode provides 0.02 cent accuracy for studio-grade tuning. True bypass ensures no signal path coloration when engaged. Used at $60–$90, the PolyTune Mini is the most feature-rich tuner pedal at its price.
What to check used: The polyphonic display shows all strings simultaneously — verify you can read the display on your specific stage (very bright lights can wash out LED displays). The standard PolyTune 3 (not Mini) has a larger display that's easier to read in difficult lighting conditions. True bypass means muting the output when the tuner is active (as it should be for silent tuning).
#3
Boss TU-3
Pedal tuner (chromatic) · 21-segment LED meter, Accu-Pitch (lights on when in tune), guitar/bass mode, true bypass option$60–$90 usedBest for: Reliable live performance tuner, bright LED display, Boss durability, pedalboard standard
The Boss TU-3 is the most common stage tuner in professional use — it appears on more professional pedalboards than any other tuner because of its reliability, bright 21-segment LED display readable in full stage lighting, and Boss's legendary durability. The Accu-Pitch indicator flashes when exactly in tune, providing an unambiguous signal even in noisy environments. Used at $60–$90.
What to check used: The Boss TU-3 is a buffered bypass tuner — when off, signal passes through the buffer circuit. This is actually beneficial for large pedalboards (maintains signal strength), but purists who want true bypass may prefer the PolyTune 3 (true bypass version available). The Accu-Pitch feature is useful but the flashing can be distracting for fast tuning changes.
#4
Peterson StroboStomp HD
Strobe pedal tuner · 0.1 cent accuracy, virtual strobe display, 50+ sweetened tuning temperaments, USB updating$120–$160 usedBest for: Professional stage and studio tuning, intonation setup, sweetened temperaments, maximum accuracy
The Peterson StroboStomp HD is the professional's strobe tuner — 0.1 cent accuracy (compared to 1 cent on most chromatic tuners and 0.02 cent on TC PolyTune strobe mode) and 50+ 'sweetened' temperament settings that account for the natural intonation characteristics of guitar. Peterson's sweetened tuning modes make open chords sound more in tune by compensating for the equal temperament vs. just intonation discrepancy that causes guitar chords to sound slightly off even when perfectly in tune. Used by guitar techs and professional luthiers for setup work.
What to check used: The StroboStomp is more expensive than most pedal tuners and its accuracy advantage is primarily useful for setup work (intonating a guitar) and studio recording. For live performance, the accuracy difference between Peterson and Boss TU-3 is imperceptible. The sweetened temperaments require understanding how to select the right mode for your situation.
#5
Korg Pitchblack Advance
Pedal tuner (chromatic) · 0.1 cent accuracy, 4 display modes, pure bypass true bypass, meter/half-meter/stream/mirror$60–$90 usedBest for: Alternative to Boss TU-3, true bypass, Korg reliability, 4 display modes
The Korg Pitchblack Advance is the true-bypass alternative to the Boss TU-3 at the same price point. Four display modes (meter, half meter, stream, mirror) allow you to customize the visual representation to what's easiest to read on your stage. 0.1 cent accuracy is better than the TU-3's standard accuracy. Korg's reputation for tuner accuracy dates back to the Pitchblack Original — one of the first truly reliable pedal tuners for working musicians. Used at $60–$90.
What to check used: The 4 display modes require selecting your preferred mode initially — the default is adequate but some players prefer the stream mode (needle-style analog simulation). True bypass is genuine hardware bypass; verify this is functioning by testing signal path on bypass.
#6
D'Addario NS Micro Tuner
Micro clip-on tuner · Ultra-compact clip-on, chromatic, backlit display, auto-power off, fits most headstocks$12–$18 newBest for: Most compact clip-on, stays on during performance, virtually invisible, quick access
The D'Addario NS Micro Tuner is the smallest clip-on tuner available — designed to remain clipped to the headstock during performance without being visually distracting. The rotating display allows you to read the screen from any angle. The auto-power-off preserves battery life. For acoustic guitarists who want to leave a tuner on the guitar at all times and check tuning quickly mid-performance, the NS Micro is the least intrusive option.
What to check used: The very small display size of the NS Micro makes it slightly harder to read in low light compared to full-size clip-on tuners. Battery (CR2032) access requires a small coin or screwdriver. Verify the clip mechanism isn't damaged on used units — the hinge can develop looseness after extended use.
#7
TC Electronic Polytune Clip
Clip-on tuner with polyphonic mode · Polyphonic strumming mode, chromatic, clip-on headstock, color LED display$25–$35 usedBest for: Acoustic players wanting polyphonic tuning without a pedal tuner, all-string check in clip form
The TC Electronic PolyTune Clip brings the polyphonic all-strings-at-once tuning feature to a clip-on form factor — strum all six strings, the display shows which ones need adjustment. No cable connection required. For acoustic players who want the speed advantage of polyphonic tuning without investing in a pedal tuner, the PolyTune Clip is the bridge product. Used at $25–$35.
What to check used: Polyphonic display on a small clip-on display is slightly harder to read than on the full-size PolyTune 3 pedal. The clip-on reading through wood vibration can be slightly less accurate in polyphonic mode than in single-string chromatic mode — switch to chromatic mode for final fine-tuning verification.
#8
Peterson StroboPlus HD
Handheld strobe tuner · 0.1 cent accuracy, backlit LCD strobe display, 50+ temperaments, rechargeable battery$120–$160 usedBest for: Guitar techs, luthiers, intonation work, rechargeable handheld precision tool
The Peterson StroboPlus HD is the handheld version of the StroboStomp — 0.1 cent strobe accuracy in a rechargeable handheld unit with a large backlit LCD display. For guitar technicians who set up intonation on multiple guitars, a handheld unit is more practical than a pedal. The 50+ sweetened temperament library includes specific modes for guitar, bass, violin, and most orchestral instruments. The rechargeable battery eliminates the constant battery replacement of standard handheld tuners. Used at $120–$160.
What to check used: The StroboPlus HD is a specialist tool for luthiers and guitar techs — the $120+ price is justified for professional use but exceeds what most players need for simple tuning. For daily playing, a Snark clip-on or Boss TU-3 is appropriate. The StroboPlus HD strobe display requires a moment of learning to read accurately.
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