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Black rectangular pedal tuner with metal housing and footswitch

Monoprice Inc.

Monoprice Inc. 611220 Chromatic Pedal Tuner

SKU CH-MG7N-93QN0 MPN 611220

Chromatic pedal tuner with 1-cent accuracy, normal and bypass outputs, and 39-segment display for stage use

  • TypeGuitar Pedal Tuner
  • Weight0.64
  • Tune accurately on stage with 1 cent precision
  • Mute signal silently using normal output when activated
  • Keep dry signal flowing via bypass output always
  • Calibrate pitch from 436 to 445 Hz in 1 Hz steps
  • Power from 9 V battery or 9 VDC adapter

Stage-ready chromatic pedal tuner

The Monoprice 611220 chromatic pedal tuner fits a standard pedalboard and gives guitarists and bassists a dedicated footswitch for fast, silent tuning between songs. Its metal chassis and 39-segment FND display are built for regular stage use. Power comes from a 9 V battery or a 9 VDC adapter with a 5.5 mm/2.1 mm negative-tip plug, neither included. The pedal weighs 0.64 lb and measures 73 x 110 x 47 mm.

Tuning stability and signal routing

The tuner covers A0 at 27.5 Hz up to C8 at 4186 Hz with an accuracy of 1 cent and lets you calibrate the reference pitch from 436 to 445 Hz in 1 Hz steps. You can also apply one, two or three flats for alternate tunings. When the footswitch is engaged the normal 1/4 inch TS output mutes while the bypass output passes the dry signal straight through, keeping your rig live even while you tune.

Pedalboard integration and common issues

Two 1/4 inch TS jacks provide standard and bypass outputs, so you can choose whether the tuner sits in-line or on a parallel loop. A 9 V battery (6F22 or 6LR61) fits inside the enclosure, but the compartment can be tight for some brands. The 9 VDC jack expects a centre-negative 5.5 mm/2.1 mm barrel; using a centre-positive supply will not power the unit. Buyers who need polyphonic tuning or a buffered output should look elsewhere.

Highlights

  • Tune accurately on stage with 1 cent precision
  • Mute signal silently using normal output when activated
  • Keep dry signal flowing via bypass output always
  • Calibrate pitch from 436 to 445 Hz in 1 Hz steps
  • Power from 9 V battery or 9 VDC adapter

Specifications

BrandMonoprice
Model611220
Part Number611220
TypeGuitar Pedal Tuner
Weight0.64

Questions about this item

Does the 39-segment FND display add noticeable heat or draw extra power during long sets?

The tuner runs on a 9 V battery or 9 VDC adapter and has no fan or lamp; the LED display draws minimal current so heat and power draw stay negligible all day.

What power source do I need to have on hand before this pedal will work?

You must supply a 9 V alkaline or heavy-duty battery (6F22 or 6LR61) or a 9 VDC adapter with a 5.5 mm / 2.1 mm negative-tip plug; neither is included.

Will the bypass output pass signal to my vintage amp unchanged while the tuner is active?

Yes — the bypass output ignores the tuner circuit entirely and routes the 1/4 inch TS input straight through, so older amps receive an unaltered signal even when tuning.

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