The Joyo JF-331 F.O.H is a compact direct box preamp from the Chinese manufacturer Joyo, designed for use with electric and bass guitars. This miniature pedal aims to simplify connecting your instrument to a sound system without the need for bulky amplifiers or additional equipment.

Key Features:

1. Miniature size: This pedal is part of Joyo's Ironman series, known for its compact, portable effects that are easy to transport and mount. Due to its small size, it fits easily on any pedalboard.
2. Built-in preamp: It is designed as a preamp that allows you to get a clean, professional signal from your guitar or bass, which can be sent directly to a mixing console or audio interface.
3. Wide range of adjustments: It features basic tone control knobs (gain, treble, bass), allowing you to fine-tune your sound to your preferences.
4. Clear signal: The Joyo JF-331 F.O.H is ideal for live performances where signal clarity and quality are crucial. It functions like a DI box (direct input), so you can connect your guitar directly to the sound system without needing an amplifier.
5. Protective knob cover: The pedal has a small, flip-up cover that protects the knobs from being accidentally changed during transport or performance.
6. Power supply: The pedal requires a standard 9V DC power supply, like most guitar effects.

Applications:

The Joyo JF-331 F.O.H is especially useful in live performance situations where you need a small, portable, and effective tool to send your guitar signal to the sound system. It is also handy in the studio, where it can function as a preamp when recording guitars without amplifiers. Due to its compact size and ease of use, it's an ideal solution for musicians who need a reliable and portable DI box.

Summary:

The Joyo JF-331 F.O.H is an affordable, miniature alternative to full-sized DI boxes and guitar preamps, designed with simplicity and functionality in mind, making it a great choice for live musicians as well as studio recording.