This is a New JOYO JF-315 Metal Head Amp Simulator Pedal from Joyo, listed in Amp & Cab Simulator Pedals on Just Pedals. Read More below.
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The JOYO JF-315 is an amplifier and cabinet-simulation pedal. It is intended for shaping an instrument signal with amplifier or cabinet-style voicing.
Key identified features include distortion.
JOYO Technology is a Shenzhen music-gear company whose range goes well beyond stompboxes. Its official catalogue covers guitar and bass amplifiers, acoustic and busking amps, effects, power supplies, interfaces, wireless systems and accessories. JOYO also says it develops acoustic-core technology and has applied for utility patents. JustPedals listings include the JF-21 Splinter distortion and JF-319 Green Legend overdrive, alongside mini amps and power adapters. That breadth matters when comparing products under the JOYO name: some are effects, while others support the rest of a guitar or bass rig.
Distortion clips the waveform more firmly than overdrive, generating dense upper harmonics, longer sustain and a more compressed response. Circuit topology and filtering decide whether the sound is tight and focused, broad and aggressive, smooth or deliberately abrasive. Gain sets the amount of clipping, while pre- and post-distortion tone controls strongly influence low-end definition, midrange presence and high-frequency texture.
