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  • Very accurate chromatic tuner
  • Suitable for many instruments, including Guitar, Bass, Banjo and of course the mandolin
  • Good metronome function
  • Pickup included to tune in noisy environments


  • Not very intuitive switch function, between metronome and tuner
  • Not a real clip-on tuner, you need to use external clip-on pickup



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Recommended for use at home!

Cherub WMT-555C is a versatile combination of tuner with metronome, with a advanced functions.
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If you want a combined mandolin tuner and metronome to use when practicing, that will help you progress with your playing but also to be used to tune your mandolin, we recommend the Cherub WMT-555C.

Cherub WMT-555C Tuner and metronome with clipon pickup

At first glance you will get a little bit confused on how to change mode from tuner to metronome, but if you try just a little,  you will be satisfied with this desktop tuner and it will become your companion whether you are a mandolinist or a guitarist.


Packaging and contents

Packaging and contents 100
cherub packaging packet

Cherub WMT-555C packaging is very good and it includes:

  • The tuner/metronome
  • Clip-on pickup
  • 2x AAA batteries
  • Earphone (mono)

I believe that the clip-on pickup is a good idea that may help you with acoustic instruments in a noisy environment but the real bonus is the earphone, I think you can imagine why!


Ease of Use

Ease of Use 90

The Cherub WMT-555C combines both a metronome and a tuner in a single device, therefore usage is expected to be more complex than single tuners. Nevertheless once you understand how to change mode (from metronome to tuner and vice versa), everything else is very easy.

  • The tuner is chromatic, thus you can use it for non standard tunings.
  • The display is uncluttered, you immediately understand the indications for both metronome and tuner
  • Metronome tempo is displayed also with "Presto, Allegro, Moderato, etc.", very good for beginners.
  • After power-on/off, last settings are kept
  • Coloured LEDs are lit to indicate how close to pitch you are.
  • Using an earphone for the metronome is a great feature, as the metronome can be very annoying to others
  • On/Off and Mode buttons have two functions, not very intuitive.
  • The second function is activated when a button is keep pressed. Need to read the manual to find how this works.

As the Cherub WMT-555C is chromatic, you can easily deal with non-standard tunings, as it will read any note you play. Finally, the earphone feature is welcomed, especially for the metronome.



Visibility 90
Cherub WMT-555c with elevation



The Cherub WMT-555C visibility is good, especially when using the elevation feature as the screen view angles are not very wide. The elevation is possible via the integrated elevator stand, for optimum viewing of the tuner display.

I did not witness any visibility problem due to direct sunlight, as I tested this at my garden in Greece, during summer. You can not get more sun than this, right? Also, this metronome/tuner is most frequently used inside the house, when practising, so no problem whatsoever.

Finally, the lack of wide angles may prove to be a problem, especially if there is lack of space where you practice. For example, if you use a music stand, it may be difficult to position the Cherub in a way where visibility is maximised, so you may end up putting it instead temporarily on your foot.



Design 90
cherub packaging

The Cherub WMT-555C is a discrete tuner due to its low profile, that can be left on your coffee table or the music stand without any concern. The black colour and the simple design enables it to blend in and disappear.

There is no WOW with this tuner, if this what you are after. In this case you may have to look for more gadget-like tuners, such as the SNARK SN-8.


Battery life

Battery Life 100
AAA batteries 2-pack for KORG WMT-555C tuner metronome


With the Cherub WMT-555C, things are looking good, since the power save feature conserves battery power.

  • If no notes are detected for 2 minutes, the tuner will shut off

I own this tuner for three years now, and I have changed batteries only three times.

The result: there is low probability that you will not have enough battery for your nice tuner when you need it!



Versatility 90
korg clip-on pickup


Τhis Cherub WMT-555C is a versatile little equipment, as it is:

  • a mic-based tuner
  • a tuner that senses the vibrations of the instrumentvia the clip-on pickup
  • a metronome that supports a great variety of tempos and note values
  • a silent metronome realised via the included earphone
  • a multi-instrument tuner with the supported tuning setting

So, this tuner is a valuable tool for practising at home and also for tuning even in noisy environments (yes I consider a gig to be noisy!).

You will find the tuner to be very versatile, as it can be set for standard tuning, all notes, common alternate tunings, including F, Bb, Eb. You can even set the reference pitch. The default reference pitch is A=440.0 Hz tuning, but pro musicians, especially classical musicians, can set the reference pitch from 435Hz to 445Hz. This capability can not match a mobile app tuner such as iPhone GuitarTunerreviewed here, that can reach 392.0 Hz (French Baroque) or go all the way up to 528.0 Hz (DNA Repair) or even the SNARK SN-8 tuner . But, if you are not a classical mandolinist, this will not bother you.


Additional features

Additional Features 100
korg wmt-555c

The Cherub  has a built-in metronome, which is pressing for 1-2 seconds the Mode button.

Once the metronome is activated, one tap on the On/Off butoon, activates the metronome to the previous setting e.g. 100bpm, indicated by a moving bar on the front panel display.

The tempo can be adjusted by tapping the up/down buttons at the front of the device, and the supported range is 30bmp to 230 bmp.

The beat can be adjusted by tapping the mode button at the front of the device, and it supports -/4, 1/4, 2/4, 3/4, 4/4, 3/8 and 6/8 beats.

The value can be adjusted by tapping the value button at the front of the device, and it supports one quarter note, two eighth notes, four sixteenth notes, doted eight note, and rest and eight note.

I found that the metronome feature really useful, as you need a metronome that uses sound in order to practice. Also, having an earphone can spare your family/friends from the headache, right?

Finally, when compared to a mobile app tuner such as iPhone GuitarTunerreviewed here, you find that the mobile apps provide additional features such as chord and scale charts which are very useful. You don't expect that from a tiny digital tuner, I know, but still, having a complete chords database with you is a nice feature.



Cherub WMT-555C Tuner and Metronome with clip-on pickup
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Recommended for Home Use

Cherub WMT-555C is versatile, easy to use tuner, with excellent battery life, speed and nice design
Purchase Now
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