JOYO DC 9V Guitar Pedal Power Supply - 4-Way Daisy Chain, Low-Noise

In this review of the JOYO DC 9V Guitar Pedal Power Supply the bottom line is simple: it is a budget-friendly, compact wall adapter for players who need a reliable 9V DC source for multiple pedals. The reviewer found it particularly useful for hobbyists and gigging musicians who want to eliminate batteries and power up to four pedals at once with a single AC wall charger. Noise performance varies by pedal chain, but the unit's smart IC and isolation features make it a sensible choice for four-pedal setups where cost and convenience matter most.

Key Features

• 9V DC Output: Provides a steady 9V DC output with 800mA nominal and up to 1A peak, which covers most standard guitar effect pedals that use tip negative power.
• 4-Way Daisy Chain: The included four-way daisy chain cables let users power up to four pedals simultaneously without running multiple adapters.
• Wide AC Input Range: Accepts AC100V-240V at 50/60Hz so it can be used in different countries with compatible mains voltages.
• Protection Circuits: Built-in over-voltage, over-load and short-circuit protection help safeguard pedals from common power faults.
• Smart IC Noise Reduction: Uses a professional IC chip and filter capacitor to reduce noise and provide isolation, which helps keep unwanted hum low in many setups.
• Certifications and Materials: Components meet RoHS standards and the adapter is CE/FCC/UL certified, supporting safer, compliant use.

Who It's For

This power supply is best suited to guitarists and bassists who run small pedalboards of up to four 9V tip-negative pedals and want a simple, affordable single-adapter solution. It appeals to players who prioritize convenience and portability over modular powering solutions like isolated multi-output supplies.

Players who rely on high-gain chains, studio work where absolute silence is critical, or those using pedals that require isolated outputs for noise-free operation should look elsewhere for fully isolated multi-output supplies with dedicated current per output.

Pros & Cons

Pros

• Compact wall-mounted design is space-efficient and simple to deploy on small pedalboards.
• Four daisy-chain outputs reduce clutter and eliminate the need for multiple adapters.
• Protective circuits and smart IC chip provide safer operation and reduced interference in many setups.

Cons

• Not fully isolated per output, so some users report buzzing with certain pedals in sensitive chains.
• Combined current is limited; high-draw pedals may push close to the 1A maximum when used together.

Specifications

Input	AC100V-240V, 50/60Hz, 0.2A
Output Voltage	9V DC
Output Current	800mA nominal, Max 1A (1000mA)
Polarity	Tip Negative (center negative)
Daisy Chain	4-way pedal cables (3.9 ft total for chain)
Protections	Over-voltage, over-load, short-circuit protection

Our Verdict

The JOYO DC 9V power supply is a practical, cost-effective choice for gigging players and hobbyists who need to power up to four tip-negative pedals without fuss. Its protection features and smart IC filtering make it good value, though those needing absolute silence or isolated outputs for each pedal should consider higher-end supplies.

Frequently Asked Questions

Can this adapter power four pedals at once?
Yes, the included 4-way daisy chain lets you power up to four pedals, but total current draw should not exceed the adapter's 800mA nominal or 1A peak limit.

Is the polarity compatible with most pedals?
Yes, the supply uses tip negative (center negative) polarity, which matches most common 9V guitar and keyboard pedals.

Will it introduce noise into my signal chain?
Many users report low noise thanks to the smart IC chip, but some setups and pedals can still experience buzzing, so isolated outputs may be preferable for very noise-sensitive rigs.