The PSA230 power supply output is regulated and smoothed, which means that the voltage and current delivery are constant and almost no hum is produced. A regulated DC power supply with very low hum is essential when using guitar effects pedals, especially distortion pedals. Humbucker pick-ups reduce hum - hence the name - while single coil pick-ups are more prone to hum. To reduce hum, especially when using distortion pedals, try switching to the humbucker pick-up if your guitar has one, or switch to two single coil pick-ups combined if your guitar has single coils. An example of a humbucker guitar is the Gibson Les Paul and a single coil guitar is the Fender Stratocaster. Most Boss guitar effects pedals only require a small current, so several pedals can be used with only one Boss power supply unit (PSU).

Specifications:

• Input: 230v - 50Hz

• Output: 9v - 200mA

• Centre negative 9v power supply suitable for all Boss compact pedals and many other guitar and bass effects.

Includes a built-in output current protection circuit!