Brand

Joyo

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.

Category

Acoustic Effects Pedals

Acoustic effects shape an amplified acoustic instrument while retaining the detail of its natural attack and body resonance. The category includes preamps, equalisation, compression, ambience and feedback control voiced for piezo, magnetic or microphone sources. Input impedance, notch filters, phase controls and balanced DI outputs determine how accurately the pickup signal is matched, corrected and passed to an amplifier, interface or PA.

Tags

EQ

Raises or lowers defined frequency regions. Fixed-band graphic controls provide direct visual shaping, while parametric controls vary centre frequency and bandwidth; the available range and filter width determine whether the change is broad tonal balance or narrow corrective filtering.