This is a power supply (AC adapter) that can be used with the FX-AUDIO digital amplifiers FX202A/FX-36A PRO. The power supply specifications for this amplifier are "DC12V-24V, power capacity of 2A or more recommended," so the electrical specifications are compatible. [AC Adapter Specifications] INPUT: 100-240V 50-60Hz OUTPUT: 24V, 2.65A Plug shape: Outer diameter 5.5mm, inner diameter 2.1mm, center positive Operation has been confirmed with the FX-AUDIO digital amplifiers FX202A/FX-36A PRO. There was no noise, and clear and powerful sound was produced. Instant purchase is OK.