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Sony Portable Hi-Res DAC/Headphone Amplifier - PHA-1A

Abt Model: PHA1A | UPC: 027242886759
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Sony Portable Hi-Res DAC/Headphone Amplifier - PHA-1A

Listen to highly detailed audio with this Sony Hi-Res portable DAC/headphone amplifier. It connects to your digital music device or PC to decode a wide range of Hi-Res PCM audio file formats so that you can enjoy 24-bit music from virtually any device via USB or microUSB. The high-quality application circuits produce impressive signal and performance with virtually no distortion, low noise and a high slew rate so that it can produce up to 120dB of dynamic range, letting you play your music as loud as you like with exceptional detail.

This Sony amplifier also ensures ultra-smooth thanks to the asynchronous USB 2.0 clock. This lets it reduce timing inaccuracies as it converts digital into analog waveforms and supports highly accurate overall digital signal conversion. All this technology is encased in a compact aluminum enclosure that keeps this Sony digital amplifier and everything within safe. Alloy bumpers prevent the volume knob from being affected by impacts. When you're out and about, this Sony Hi-Res portable DAC/headphone amplifier has a six-hour battery life to keep your music playing.


  • Pintsize powerhouse!
    The PHA-1A portable headphone DAC/amplifier affords a powerful high-resolution audio experience through your headphones and can decode a variety of Hi-Res PCM audio file formats up to 192kHz/24-bit format
  • Flexible connectivity
    Compatible with a wide array of digital devices. The PHA-1A features a standard USB type A connection, ideal for digital interconnectivity to compatible iOs and other devices, while a second microUSB is handy for digital interconnectivity with compatible Walkman® or Xperia® devices. A third microUSB connector provides for charging the device using a USB AC adaptor (Sold Separately)
  • High-quality amplification circuits
    The WM8740 Wolfson DAC samples PCM audio up to 192 kHz/24 bit and the LME49860 operational amp delivers outstanding signal & performance with ultra-low distortion, low noise & high slew rate. A high-bandwidth TPA6120 headphone amp minimizes noise, delivering more than 120 dB of dynamic range to ensure music is heard with every detail
  • Jitter-free audio
    An internal, asynchronous USB 2.0 clock supports the highly accurate conversion of digital signals to analog sound. This precision clock signal generator also reduces timing inaccuracies when converting digital signals into analog waveforms. The result is superior audio performance with minimal noise and distortion
  • Durable construction and materials
    A compact aluminum enclosure protects the delicate internal circuitry from outside interference and impacts while alloy bumpers protect the volume knob and headphone connectors from external impact
  • Rechargeable Lithium-ion battery
    The internal rechargeable battery provides approximately 6 hours of hi-res music playback when connected digitally via USB input
  • Flexible headphone support
    A two position, side mounted gain switch allows you to optimize amplifier output level to match varying headphone impedances ranging from 8 to 600 Ohm. Select between Low or High settings to maximize your listening experience
  • Supplied accessories
    The PHA-1A comes supplied with the following: digital connecting cables for both Walkman® and Xperia®, one micro-B USB cable for PC and Mac®, two silicone® mounting bands, and one protective sheet. iPod®/iPhone®/iPad® devices must use their own respective cables, not included)



  • Distortion: 0.01% or less (1 kHz)
  • Frequency Response: 10 Hz - 100 kHz
  • Sampling Frequency: PCM (PC connection Maximum 192kHz/24-bit)
  • Volume Control: Integrated: Rotary power/volume knob


  • Case Type: Aluminum chassis
  • Impedance: Supports: 8 Ù - 600 Ù
  • Type of Use: Portable and Home

Inputs and Outputs

  • DC-In: Inputs (1): USB Micro-B input (for charging)
  • Digital Audio Input(s): Inputs (2): USB Micro-B input (for Computer, Walkman, and Xperia), USB Standard type A (for iPod®/iPhone®/iPad®)
  • Output(s): Output (1): Headphones (stereo mini-jack, only 3-pole supported)


  • Battery Charging (Approx): When connected to computer: Appox. 3.5 hours from empty to full When connected to AC outlet: Approx. 2 hours from empty to full
  • Battery Indicator: Red LED when charging
  • Battery Life (Approx): Approx. 6 hours
  • Battery Type: Built-in Lithium ion rechargeable battery
  • Output Power: Maximum output (when using built-in lithium-ion battery): Approx. 148mW+148mW (8 Ù, 10% distortion) Approx. 80mW + 80mW (32 Ù, 1% distortion) Approx. 26mW+26mW (300 Ù, 10% distortion)
  • Power Source: DC 3.7 V: Built-in lithium-ion rechargeable battery DC 5 V: When charging via USB

In The Box:

  • Operating instructions (1)
  • Quick Start Guide (1)
  • Digital cable for Walkman (1)
  • Digital cable for Xperia (1)
  • Micro-USB cable (1)
  • Protection sheet (1)
  • Silione belt (2)

Approximate Dimensions:

  • Height: 0.73"
  • Width: 2.4"
  • Depth: 0.22"

Approximate Weight:

  • Unit (Without Cable): 5.11 oz
  • Shipping: 1 lbs

Warranty Information:

  • Manufacturer Warranty (authorized online retailer): One Year Parts and Labor
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Key Features
Hi-Res Audio DAC/Amplifier Supports Up To PCM 192kHz/24 Bit/ Direct Digital Connection For Smartphones, DMPs, iOS Devices, And PCs/ Wolfson DAC With Separate Operational And Headphone Amps/ Sleek And Durable Aluminum Enclosure/ Built-In Lithium-Ion Battery For Up To 6 Hours Battery Life/ Selectable Gain Supports Headphone Impedance From 8 To 600 Ohm/ Silver Finish
More reasons to buy the Sony Portable Hi-Res DAC/Headphone Amplifier PHA-1A from Abt Electronics
  • is an authorized dealer.
  • The Sony Portable Hi-Res DAC/Headphone Amplifier PHA-1A is Brand New.
  • Abt ships this product for free!
TypeHeadphone Amplifier