Sony - PHA-3 Hi-Res portable DSD DAC/Headphone amplifier




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D/A Converter or Processor


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HI-RES Portable DSD DAC/Balanced Headphone amplifier

Sony's new PHA-3 HI-RES Portable DSD DAC/Balanced Headphone amplifier lets consumers enjoy their favorite Hi-Res digital, with PCM (up to 348 kHz/32bit) or DSD (up to 5.6MHz), in a whole new way. Along with featuring Sony's exclusive DSEE HX up-scale technology to acheive higher music quality from low resolution audio sources, the PHA-3 also utilizes balance audio outputs with dedicated left and right channels to deliver an optimized listening experience.


  • Powered with high-end D/A conversion technology
  • Compatible with High-Resolution Audio formats (PCM 384 kHz/32bit and DSD)
  • L/R balanced output
  • Digital connection for Walkman®, Xperia®, iPhone/iPad/iPod®
  • Features high quality components traditionally used for premium home audio
  • Immerse in spacious, three-dimensional soundstage

Flexible connectivity maximizes the personal audio experience no matter the input source - smartphone, portable audio player, PC or other analog devices. The PHA-3 uses durable materials: compact aluminum to enclose the delicate circuitry from internal or external interference, front bumpers which protect the volume knob & headphone connectors from external impact, and recessed control switches which help to reduce the chance of accidental access during playback. The internal rechargeable battery provides approximately 5 hours of balanced audio playback when connected via USB, or up to 28 hours of playback when connected using the analog, 1/8" stereo input.

Featuring ESS Technology, Inc. ES9018 D/A converter the PHA-3 offers outstanding audio performance of dynamic range.

Amplifier Section

  • Impedance : Supported impedance: 8 - 600 Ohm (Normal - High)

Amplifier Inputs and Outputs

  • Digital Audio Input(s) : Inputs (3): USB Micro-B input (for charging & PC), USB Mini-B input (for Walkman™), USB Standard type A (for iPod®/iPhone®/iPad®)


  • Volume Control : Rotary
  • Distortion : 0.01% or less (1 kHz)
  • Sampling Frequency : PCM (PC connection Maximum 384kHz/32bit), DSD (2.8MHz,5.6MHz)
  • Frequency Response : 10 Hz - 100 kHz (AUDIO IN input)


  • Case Type : Aluminum chassis
  • Type of Use : Portable and Home
  • Power On/Off : Integrated: Rotary power/volume knob

General Specifications

  • Recharging time : Approx. 15 hours (PC Connection)

Inputs and Outputs

  • Digital Audio Input(s) : Inputs (4): Computer, Walkman®, Xperia® connecting port, iPhone®, iPod®, iPad® connecting port, Optical input connecting port, Stereo Mini Jack
  • Input(s) : Analog (1)
  • Output(s) : Outputs (3): 3-pole mini jack (BALANCED-L) 3-pole mini jack (BALANCED-R) Stereo mini jack*1 (NORMAL)


  • Battery Type : Built-in Lithium ion rechargeable battery
  • Power Source : DC 3.7 V Built-in lithium-ion rechargeable battery
  • Battery Life (Approx) : Digital (balanced) connection: Approx. 5 hours; Analog connection: Approx. 17 hours
  • Battery Indicator : Yes: Lights up green when power is turned on, flashes to indicate battery level. See manual for details.
  • Battery Charging (Approx) : Charging via USB: Appox. 15 hours from empty to full,Red battery charge LED on during charging,LED indicator turns off automatically once fully charged,Unit will not charge during playback
  • Output Power : Maximum output: Approx. 320mW + 320mW (Balanced Connection, 32 Ohms, 1% distortion)
  • Input Voltage : Maximum: 2 Vrms (AUDIO IN)


  • Frequency Range : 10 Hz - 100 kHz (AUDIO IN input)

Weights and Measurements

  • Dimensions (Approx.) : 80 mm x 29 mm x 140.5 mm (3.14 x 1.14 x 5.53 in.)
  • Weight (Approx.) : Approx. 10.6 oz. (300 g) - rechargeable battery included


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