AC adapter for audio equipment

There are many requirements for the power supplies used in musical instrument products. Among these, the most important are measures against "acoustic noise" and "buzzing noise." Our company develops, produces, and sells various types of power supplies for musical instruments, ranging from those for small speakers to larger ones such as electronic pianos. We can modify a wide lineup of products, including those compliant with the IEC62368 safety standard, which will be applied in the future, to suit your company's needs, or we can develop new products in a short period and provide them to you.

Applications and Features

Digital pianos, synthesizers, keyboards, amplifiers, speakers, etc.

  • Electrical characteristics: Input voltage 90~264V / Output voltage 15V/3A, 15V/4A, etc.
  • Applicable safety standards: CB, CE, PSE, UL, etc. based on IEC62368 and IEC60065

* Power supplies for audio equipment may have special specifications for instrument-side noise and OCP value settings that standard IEC60065/62368-compliant products cannot meet.

Digital piano, synthesizer, keyboard, amplifier, speaker diagram

Customization (Modification) Examples

  • Achieving specifications with low-frequency audio noise reduction.
  • Compliance with European ErP Directive Lot 7 and COC Tier 2 efficiency standards.
  • Achieving a 6dB margin for terminal noise voltage & noise electric field intensity under connected equipment conditions.
  • Achieving a 12dB margin under resistive load conditions.
  • Support for long service life.

Diagram of customization (modification) examples

AC adapter for audio equipmentProduct example