The Rock Stock Pedals Nano Tuner is a chromatic pedal tuner built to take up as little pedalboard space as possible. Pedal of the Day gave it a first look at launch in January 2021 and measured it at 1.8 by 1.7 by 1.6 inches, small enough that the site said it takes up 50 percent less space than the next smallest pedal tuners.1
A tuner the size of a footswitch
The Nano Tuner's pitch to players is simple: a tuner that barely costs any room on the board. It weighs about as much as a cell phone.1
"Small, discreet and powerful, the Nano Tuner pedal has a home on every guitar player's pedal board."
The enclosure is aluminum alloy, which the review credits with making the pedal extremely durable, and the site called it road worthy.1
Controls and display
The design folds two functions into one: the on/off switch and the tuner display are a single unit. You step on the round display to turn the tuner on or off, so there is no separate footswitch beside it taking up more space.1
| Control | What it does |
|---|---|
| Round display pad | Acts as both the tuner display and the on/off switch; step on it to turn the tuner on or off1 |
The display uses LED strobe lights, which Pedal of the Day found easy to see in any lighting, whether a dark club stage or a sunny outdoor venue.1
Accuracy and speed
Pedal of the Day reported that the Nano Tuner is accurate to within about .5 cents and has what the site called a lightning quick response time of 10ms. For reference, a cent is one hundredth of a semitone, so half a cent is a fine margin of error for a pedal tuner.1
How it compares
The Nano Tuner sits at the very small end of the pedal tuner field. Other compact options on Tonebox include the MOOER Baby Tuner, the TC Electronic Polytune 3 Mini and the Sonic Research Turbo Tuner ST-300 Mini. What sets the Nano Tuner apart, per its maker's design, is that the display itself is the switch. For a wider view of the category, see Tuner Pedals.1
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Questions
How big is the Rock Stock Pedals Nano Tuner?
Pedal of the Day measured it at 1.8 by 1.7 by 1.6 inches, and noted that it takes up 50 percent less space than the next smallest pedal tuners. It weighs about as much as a cell phone, which makes it one of the smallest footswitch-style tuners you can put on a board.
How accurate is the Rock Stock Pedals Nano Tuner?
According to Pedal of the Day's first look, the Nano Tuner is accurate to within about half a cent and has a response time of 10ms. The LED strobe display is described as easy to read in any lighting, from a dark club stage to a sunny outdoor venue.
How do you turn the Nano Tuner on and off?
The Nano Tuner combines the on/off switch and the tuner display into a single switch. You simply step on the round display to turn the tuner on or off, so there is no separate footswitch to reach for.
Is the Nano Tuner a chromatic tuner?
Yes. Rock Stock Pedals lists it as the Nano Pedal Chromatic Tuner, meaning it tunes any note across the chromatic scale rather than being limited to standard tuning reference.
What is the Nano Tuner enclosure made of?
The Nano Tuner is housed in an aluminum alloy enclosure, which Pedal of the Day describes as making the pedal extremely durable and road worthy.
Sources (1)
- Rock Stock Pedals Nano Tuner, Pedal of the Day, 2021-01-21






