FX Audio PH-A1 Headphone Ampsearch

FX Audio PH-A1 Headphone Amp

FX Audio PH-A1 Headphone Amp

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Powerful Starter Amp

For anyone looking to add a headphone amplifier to their setup, the FX Audio PH-A1 has a lot to offer. Powerful yet compact, it can drive more demanding headphones—like the Sennheiser HD 650 and Massdrop x Sennheiser HD 6XX—and won’t take up much space on your desk. The brushed aluminum housing is lightweight and sturdy, and features a front panel with a stepped volume knob, a gold-plated quarter-inch headphone out, and two switches: one to turn the amp on and off, and the other to select your source. Equipped with a pair of NE5532P opamps, the FX Audio PH-A1 accepts sources via both stereo RCA and 3.5-millimeter inputs, which you’ll find on the back panel.

Note: At checkout, you’ll have your choice of color: black or silver.

FX Audio PH-A1 Headphone Amp
FX Audio PH-A1 Headphone Amp
FX Audio PH-A1 Headphone Amp
FX Audio PH-A1 Headphone Amp
FX Audio PH-A1 Headphone Amp

Color Options



  • FX Audio
  • Housing: Brushed aluminum
  • Frequency response: 10 Hz – 30 kHz
  • Distortion: <0.003%
  • Signal-to-noise ratio: >100 dB
  • Output power: 80 – 1,000 mW
  • Max output, 16 ohm: 1000 mW
  • Max output, 32 ohm: 910 mW
  • Max output, 62 ohm: 610 mW
  • Max output, 100 ohm: 450 mW
  • Max output, 300 ohms: 160 mW
  • Max output, 600 ohm: 80 mW
  • Opamp: 2 NE5532P opamps
  • Switches: On/off, source selector
  • Inputs: Stereo RCA inputs, 3.5 mm input
  • Output: 6.35 mm headphone out (3.5 mm jack adapter not included)
  • Dimensions: 5.7 x 2.9 x 1.2 in (14.6 x 7.3 x 3.1 cm)
  • Weight: 7.8 oz (222 g)


  • 6 ft (1.8 m) RCA stereo to 3.5mm jack cable
  • 24V transformer/DC adapter


All orders will be shipped by Massdrop.

Estimated ship date is Feb 7, 2017 PT.

After the drop ends, payment will be collected and the group’s order will be submitted to the vendor up front, making all sales final. Check the discussion page for updates on your order.