AHR-1 Plus – Headphone Amplifier

The AHR-1 Plus is a stereo headphone amplifier designed to work with any combination of high efficiency headphones with impedances between 24 and 600 ohms. It features balanced stereo RJ45 audio, and 1/4″ TRS input jacks. The AHR-1 Plus may be desktop, or under-counter mounted.

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The AHR-1 Plus can be used as a stand alone headphone listening station using the included external power supply. The AHR-1 Plus is equipped with 3.5mm (1/8″) and 1/4″ headphone jacks; level control. Two rear panel RJ45 jacks are provided for connection via CAT5 cable to the FlexPhones Master or other system. For standalone applications two 1/4″ TRS input jacks are provided to accept balanced or unbalanced stereo input audio.


  • • High-power stereo output headphone amplifier
  • • Front panel headphone level control.
  • • 1/4″ and 3.5mm headphone jacks.
  • • Professional quality at all volume levels.
  • • Balanced stereo RJ45 and 1/4″ TRS input jacks.
  • • Direct coupled low-noise NJM4580 output operational amplifiers.
  • • Includes PS-1515 +/-15VDC desktop power supply with IEC inlet.