# JOYO JF-04 High-Gain Distortion Guitar Pedal

The JOYO JF-04 is an analogue high-gain distortion pedal for electric guitar, with Gain, Treble, Mid and Volume controls. Its adjustable gain and midrange suit players shaping crunch through heavier distortion, while the 9V power supply or battery is sold separately.

- [Original product page](https://bargainpostbox.co.uk/product/joyo-jf-04-high-gain-distortion-guitar-pedal)
- [View offer](https://bargainpostbox.co.uk/visit/joyo-jf-04-high-gain-distortion-guitar-pedal)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: JOYO
- Model: JF-04
- Category: Books, Music & Hobbies > Musical Instruments
- Price: 26.34 GBP
- Previous price: 30.99 GBP
- Discount: 15%
- Price checked: 2026-11-12T19:14:14.952Z
- Rating: 4.3 / 5
- Reviews: 615

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Gain, Treble, Mid and Volume controls support adjustment of distortion intensity, brightness and midrange.
- The listing describes an analogue circuit and true bypass.
- Power options are DC 9V centre-negative or a 6F22 9V battery, neither included.

## Pros

- Separate Treble and Mid controls give more tone-shaping options than a single tone control.
- The stated gain range is aimed at guitarists seeking tones from crunch to heavier distortion.
- The manufacturer describes an aluminium alloy casing.

## Cons

- A 9V adapter or battery must be purchased separately if you do not already have a suitable power source.
- This is designed for high-gain guitar distortion, not a clean boost or transparent overdrive.

## Specifications

### Identity and effect
- Brand: JOYO
- Model: JF-04
- Signal format: Analog
- Effect: Distortion, High Gain
- Controls: Knob
- Audio connection: 1/4-inch Audio
### Power and battery
- Power configuration: Corded Electric, Battery Powered
- Power input: DC 9V adapter / 6F22 9V Battery \(None of them is included\).
- Running current: 11mA
### Dimensions and installation
- Dimensions listed: 12 x 5.5 x 5.5 centimetres
- Weight listed: 380 Grams
- Casing: Aluminum alloy

## Before you buy

- Use DC 9V centre-negative power only. The listing warns against 12V adapters. For battery operation, insert an instrument cable into the INPUT jack to activate the circuit. High-gain settings may amplify noise from the guitar, cables, amplifier or power supply.
- Listing dimensions are inconsistent: one entry gives 12 x 5.5 x 5.5 centimetres, while the detailed specification gives 120\(L\)X 97\(W\)X 55\(H\) mm. The listing also reports amperage as 11 Microamps in one field and running current as 11mA elsewhere. Confirm the dimensions and current specification if they affect your setup.

## In the box

- Effect pedal (Included): The listed components say the power supply and battery are not included.
- User's manual (Included)

## A good fit for

- Electric guitar players wanting a pedal focused on adjustable high-gain distortion and midrange shaping.
- Players with a compatible 9V centre-negative supply or willing to obtain a separate power source.

## Less suited to

- Players looking specifically for a clean boost or transparent overdrive.
- Buyers who need a power adapter or battery included in the box.

## Customer feedback

Customer feedback reports positive impressions of build quality and distortion, alongside mixed sound and functionality experiences. Some comments mention unwanted noise, no sound or the pedal stopping after a day. These are reported experiences, not established faults. They matter for a high-gain effect, where noise can be amplified, and buyers may want to confirm their power setup and test operation promptly.
- Positive themes: Customers describe the build as sturdy and praise its distortion capabilities.
- Negative themes: Some customer feedback mentions disturbance noise and power-source concerns.
- Mixed feedback: Feedback on sound quality and functionality is mixed, including reports of no sound or the pedal stopping after a day.

## Frequently asked questions

### What power source does the JOYO JF-04 use?
The listing specifies DC 9V centre-negative power or a 6F22 9V battery. Neither is included, and it warns not to use a 12V adapter.
### What controls are available?
Gain, Treble, Mid and Volume controls are described. They adjust distortion intensity, brightness, midrange and output level.
### Is it intended for bass guitar?
It is described as designed for electric guitar high-gain distortion. Bass can be connected, but the listing cautions that the tone balance may differ from expectations.

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## Add-ons

- [JOYO DC 9V Guitar Pedal Power Supply \(800mA -1A\) AC Wall Charger Adapter with 4 Way Daisy Chain Pedal Cables \(8.8 FT\), Compatible for Most Effect Pedals \(Tip Negative\)](https://bargainpostbox.co.uk/visit/joyo-jf-04-high-gain-distortion-guitar-pedal)
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## Images

![JOYO JF-04 High-Gain Distortion Guitar Pedal — 1](https://bargainpostbox.co.uk/i/dZ1LbDraUW_Lc-FtMfa2AC4hT2EOwaQnIMFMqDnsvnm8SyN_2IPSIMA_0IkvpkRG7DqQTxUPxNip4o15JCnBQhZfx7dFpmP8VbuZM6_EMG2galjD3576cHrx.jpg)

![JOYO JF-04 High-Gain Distortion Guitar Pedal — 2](https://bargainpostbox.co.uk/i/n4wNYv7giVX85eTN_amskhZXePlbUXO7hUYarw98BytaDa16E-jOBTQ5ZmliGKZkQ_tYZXe25pGJD7Hi-x0x007SooPEEDS527DxSUo4BcYZ8xc0dTEe7VYn.jpg)

![JOYO JF-04 High-Gain Distortion Guitar Pedal — 3](https://bargainpostbox.co.uk/i/_trefc2DCuJKTsOesE5QRV4SNFVoCy4NbDjrDyu0-Ko3LOxGdVyLEzVNlyZRKUfPmlQWkYEG1qiKnb1XB0H2KUupYt5juXg4ZqTtmkgr__vJiQXSDms-Yq9B.jpg)

![JOYO JF-04 High-Gain Distortion Guitar Pedal — 4](https://bargainpostbox.co.uk/i/9iEB4x7BsYHMNvNs4APmiVTgj-eCMB9e69AyJS-k7H6f91cZZ5PstlHYqOeLemXr-4VXYuXyep9nQ17TMfcFtvitc7rwmDbsJ6xh2sZW4w-ByRbVEUW9eUTe.jpg)

![JOYO JF-04 High-Gain Distortion Guitar Pedal — 5](https://bargainpostbox.co.uk/i/s4pGobVWqhv7kcBlafoZwqBhPSR2Kexxt_uJjlPTsMhPvdfOXFYsZ4Igh4MsTvSqKuqc-Jm7Zh23esEhFs3UePA7xK5GrA9FaB_BxhxhQJwrw6-nZuZpLdL4.jpg)

![JOYO JF-04 High-Gain Distortion Guitar Pedal — 6](https://bargainpostbox.co.uk/i/Br1LJyDv9DQSOFqTBxYyTMmcenCcOPyDmWoNLQMj4rQQX3FZgSOrUA2SWv91IiTaGpT7eStERlrqeoIVR8VK1XWIlZM9C0QWKj1ys1tTEK5BGC3C0AmxD4-i.jpg)

![JOYO JF-04 High-Gain Distortion Guitar Pedal — 7](https://bargainpostbox.co.uk/i/W3a2RO1qqbdU4oMx9HnsS1rqY5LcSUSIIHngwIF1Ck95w0sBCswIl39qDoxYAzM6u23SuMmpJKiTOZ-IfEyPdooFQYHmecjZ0qmb3slxL3JW1srKCZLNVAF9.jpg)