The JOYO JP-03 is a pedal power-supply product. It is intended for powering compatible pedalboard equipment.
Key identified features include bass-guitar use.
- Brand: JOYO
- Model: JP-03
- Product type: Pedal Power Supplies
- Features: Bass

This is a New JOYO JP-03 Pedal Power Supply from Joyo, listed in Pedal Power Supplies on Just Pedals. Read More below.
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In the current JustPedals catalogue, Joyo is represented by Distortion Pedals, Overdrive Pedals and Amplifiers & Headphone Amps. Current listings include Cab Box, D56 Fuzz and D54 Delay. That makes the range relevant to players looking for drive, gain and clipping, plus time-based effects and ambience. Check each model for its exact circuit or processing platform, controls, power requirements and connections, particularly where the catalogue includes both pedals and supporting gear.
A pedal power supply converts mains or battery power into the regulated DC outputs required by an effects board. True isolated outputs break ground paths and reduce interaction between pedals, while daisy chains share a common supply. Each output must match voltage, polarity and current demand; switchable voltages, high-current sockets, IEC or external adapters and mounting dimensions affect compatibility.
Voiced or equipped to retain low-frequency fundamentals and the higher headroom of a bass signal. Clean blends, crossovers and bass-specific filter ranges can preserve weight and articulation while the effected portion adds harmonics, movement or ambience.