The JOYO EQ-MP3 is a compact equalization pedal that bundles three other jobs into the same small housing: a chromatic tuner and an MP3 player with SD card and USB input, so you can shape your tone, tune up and play along with backing tracks without carrying anything else1.
The EQ section
The tone-shaping side is a straightforward three-band EQ. Each band gives plus or minus 12dB of cut or boost, which is enough range to scoop mids, add bite or fatten up a thin-sounding guitar1:
| Control | Center frequency | Range |
|---|---|---|
| Treble | 10KHz | ±12dB |
| Middle | 750Hz | ±12dB |
| Bass | 75Hz | ±12dB |
Tuner and MP3 player
JOYO describes the EQ-MP3 as an EQ pedal with tuner and MP3 playback1. The tuner uses a 440Hz A4 reference and covers a tuning range of 0A (27.5Hz) to 8C (4186.01Hz), which spans everything a six-string guitar needs1.
The MP3 side takes files from an SD card or USB input, and the controls cover previous and next track, pause and play, and MP3 volume adjustment. For a player practicing at home, that means loading backing tracks onto a card and jamming along through the same pedal that shapes the guitar signal1.
Power and size
The pedal runs on 9V and takes a single 6F22 battery, the standard 9V battery type1. It also has a low battery light, listed by JOYO alongside an organic glass panel, so a dying battery does not catch you out mid-session1.
It runs on 9V power or a 6F22 battery, and a low battery light tells you when to swap it1.
Where it sits in JOYO's EQ range
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Questions
Does the JOYO EQ-MP3 take a battery?
Yes. JOYO's product page lists the power requirement as 9V with a single 6F22 battery, which is the standard 9V PP3-style battery. The pedal also has a low battery light, an organic glass panel feature listed on the same page, that warns you when the battery is running down.
Can the JOYO EQ-MP3 play MP3s from an SD card or USB?
Yes. The pedal has an SD card and USB input, and its MP3 playback controls cover previous and next track, pause and play, and MP3 volume adjustment. That makes it possible to load backing tracks onto a card and play along through the pedal.
What frequencies do the EQ-MP3 bands control?
The three bands each give plus or minus 12dB of cut or boost: the treble control is centred at 10KHz, the middle control at 750Hz, and the bass control at 75Hz, according to JOYO's product page.
Does the EQ-MP3 have a tuner?
Yes. JOYO lists the EQ-MP3 as an EQ pedal with tuner and MP3 playback. The tuner's A4 reference frequency is 440Hz, and its tuning range runs from 0A at 27.5Hz to 8C at 4186.01Hz.
How big is the JOYO EQ-MP3?
JOYO gives the dimensions as 79mm long by 49mm wide by 26mm high, so it is a compact pedal that fits easily on a crowded board or in a gig bag.
Sources (1)
- EQ-MP3_JOYO, JOYO
