The JOYO JF-315 MetalHead is a distortion pedal from Joyo, built to produce metal tones from a guitar pedal. JOYO's own description says the gain range runs "From a fat chunk to a screaming high gain screech, the gain is picked just right!"1
Controls: MID and HIGH, no bass knob
The tone shaping is the pedal's most distinctive feature. JOYO's product page puts it plainly1:
"What's even more special is the EQ section with MID and HIGH controls, but not bass."
The maker's description says the bass is set within the design, and the sound is sculpted with mid warmth and high end bite using the two knobs.1
For a player, that means less flexibility at the low end than a three-band EQ pedal, but fewer knobs to dial in. If you want to cut or boost the bass itself, you would need to do it elsewhere in the signal chain, for example with an equalization pedal1.
Power, size and impedance
JOYO specifies a DC 9V adapter with a running current of 22 mA. The product page does not list a battery option, so plan on a 9V supply. At 22 mA it is a light load that most pedalboard power supplies handle easily.1
| Specification | Value |
|---|---|
| Power | DC 9V adapter1 |
| Running current | 22 mA1 |
| Input impedance | 1M Ohm1 |
| Output impedance | 10K Ohm1 |
| Dimensions | 73(L) x 43(W) x 50(H) mm1 |
| Weight | 220 g1 |
JOYO publishes a manual for the JF-315 MetalHead as a PDF download on its page, dated 2019-12-12, which covers the pedal's specifications in full.1
JOYO's product page lists power as a DC 9V adapter and does not mention battery operation. A 9V adapter is the way to run this pedal.
Where it sits in JOYO's range
JOYO makes a number of distortion and high-gain pedals, including the Joyo Medalhead, Joyo High Gain Distortion, JOYO UZI and the Joyo R-17 Dark Flame, the last of those a high-gain stompbox with a three-band EQ. The MetalHead's two-band MID and HIGH approach sets it apart from pedals in the range that carry a full three-band EQ.1
Videos
Ola Englund
EytschPi42
Coleman's Music
Questions
Does the JOYO JF-315 MetalHead have a bass control?
No. JOYO's product page describes an EQ section with MID and HIGH controls but no bass control. The maker's description says the bass is set within the circuit, and the sound is shaped with mid warmth and high end bite using the two available knobs.
What power does the JOYO JF-315 MetalHead need?
JOYO specifies a DC 9V adapter, with a running current of 22 mA. The product page does not list a battery option, so plan on a 9V DC power supply rather than running it on a battery.
How big is the JOYO JF-315 MetalHead?
JOYO lists the pedal at 73 mm long, 43 mm wide and 50 mm high, weighing 220 g. That is a compact footprint that sits easily on a crowded pedalboard.
What is the input impedance of the JOYO JF-315 MetalHead?
JOYO lists the input impedance at 1M Ohm and the output impedance at 10K Ohm on the product page.
Does the JOYO JF-315 MetalHead run on a battery?
The JOYO product page lists power as a DC 9V adapter and does not mention battery operation, so treat it as a pedal that needs a 9V adapter.
Sources (1)
- JF-315 MetalHead_JOYO, JOYO, 2019-12-12
