The MOOER Baby Tuner is a chromatic tuner pedal from Mooer Audio built in the company's micro-pedal format. It is a high-precision tuner that Mooer says can be accurate to 1 point, with a display made from 108 high-brightness LEDs that the maker states remains visible even in strong light or direct sun1.
Its detection range of 12Hz to 4186Hz (C8) means it tracks notes well beyond standard guitar tuning. Mooer says it works with most electric or electro-acoustic instruments, including seven-string guitar and five-string bass1.
What it does
The Baby Tuner is one of Mooer's high-precision tuning micro pedals, accurate to 1 point according to the maker. The selling point for most players is the display: 108 high-brightness LEDs arranged so the readout stays legible in strong light or sunlight, which is where smaller or dimmer tuner displays often wash out. Mooer describes the enclosure as a very small and compact design, so it slots into the micro-pedal real estate on a board alongside other mini pedals1.
The wide detection range covers the low B of a five-string bass at the bottom end and up to C8 at the top, so extended-range guitars and basses are within its reach1.
Power and connections
The pedal runs on a 9V DC adapter with a center-negative (center minus) plug and draws 90mA. Mooer recommends powering it from its own Micro Power supply. There is no battery option, so it needs a wall adapter or a pedalboard power supply1.
The 9V DC center-negative requirement means the Baby Tuner cannot run on a battery. It shares the standard boss-style power polarity, so most pedalboard power bricks will run it without an adapter.
Connections are simple: one 1/4" monaural input jack and one 1/4" monaural output jack. The true bypass switch means your signal passes through untouched when the tuner is off1. The box includes an owner's manual1.
Videos
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Questions
Is the Mooer Baby Tuner true bypass?
Yes. Mooer Audio lists the Baby Tuner with a true bypass switch, so when the pedal is disengaged your signal passes through without the tuner circuit coloring your tone. That matters on a pedalboard, where a buffered tuner in the chain can subtly change the sound even when you are not tuning.
Does the Mooer Baby Tuner work with bass and seven-string guitar?
Yes. Mooer states it works with most electric or electro-acoustic instruments, including seven-string guitar and five-string bass. Its detection range of 12Hz to 4186Hz (C8) covers the low B of a five-string bass and the highest notes on an extended-range guitar.
Can you read the Mooer Baby Tuner in sunlight?
Yes. The display uses 108 high-brightness LEDs, and Mooer says it stays visible even in strong light or direct sun. That is a practical advantage for outdoor gigs and festivals, where dimmer LED displays can wash out.
How big is the Mooer Baby Tuner?
It measures 93.5mm deep by 42mm wide by 52mm high and weighs 140g, a micro-pedal footprint that fits alongside other mini pedals on a crowded board. Mooer describes the design as very small and compact.
Does the Mooer Baby Tuner take a battery?
No. It is powered by a 9V DC adapter with a center-negative plug, drawing 90mA, and Mooer recommends its own Micro Power supply. There is no battery option, so you need a power supply or an isolated pedalboard power brick.
Sources (1)
- Baby Tuner_MOOER Audio, Mooer Audio