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Sony PHA-1A Portable Headphone Amplifier & USB DAC - Silver

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Sony PHA-1A Portable Headphone Amplifier & USB DAC - Silver

  • Enjoy powerful sound on the go in a sleek, pocket-sized amplifier

  • Compatible with High-Resolution Audio formats (192kHz/24bit)

  • Digital connection for Walkman®, Xperia®, iPhone/iPad/iPod®

  • Features high quality components for well-balanced, natural sound

  • Immerse in spacious, three-dimensional soundstage

  • Engineered for the best listening experience with MDR-1A & Walkman® A10



Enhance Your Music

Breathe more life into everything you hear with the sleek, pocket-sized PHA-1A Portable Headphone Amplifier. Engineered to deliver superior sound performance, the PHA-1A enhances the quality of everything you listen to, and brings out the potential of headphones to its full extent. Especially when paired with Hi-Res Audio devices like Sony’s MDR-1A Headphones plugged into the Walkman® NWZ-A17, the PHA-1A makes it possible for you to enjoy powerful Hi-Res Audio sound quality wherever you go.

A Purer State of Sound

Made for true music lovers, the PHA-1A is designed to deliver High-Resolution Audio sound quality for the ultimate music experience. Its Pulse Code Modulation (PCM) method captures data volume about 6.5 times that of CDs, at a higher sampling rate and bit depth of up to 192kHz/24bit. This reproduces sound characteristics closer to the original recording and picks up on subtle nuances that bring more life and evokes a greater emotional depth as you listen. With a high/normal gain control option, the PHA-1A is ready to drive a multitude of headphones with varying impedance from 8Ω - 600Ω.

Surreal Sound, Sublime Music Moments

No matter what your music preference is, the PHA-1A delivers studio-sound quality right to your ears. Thanks to Sony’s innovative audio technologies that bring out the best of your music from High-Resolution Audio compatible devices, now, everything you listen to produces a hyper-realistic sensation, as if you were right in the heart of a live performance.

Feel Emotion in Every Note

The Science Behind the Sound

In the pursuit of pure sound quality, the PHA-1A is integrated with Sony’s innovative technologies: equipped with the Wolfson WM8740 DAC chip that is utilised for high-end premium models, a low-distortion amplifier that operates at a low-noise level, a high 5V power supply offers a high S/N ratio, and an output capacitor-less (OCL) amplifier ensures minimal sound distortion. High sound quality solder used in the Walkman® NWZ-A17 delivers natural balances in low-mid-and high-range sound. This makes what you listen to closer to the original recording with more life in every note

Engineered for Performance

Thanks to the PHA-1A’s wideband performance that spans from 10Hz to 100kHz, you can enjoy a variety of music genres that contain rich, deep bass to radiant highs and listen to vocal melodies and subtle audio harmonics, clearly and naturally. Beyond hearing, the PHA-1A lets you feel every emotion of what you listen to that makes music all the more worth indulging in.

Hi-Res Audio On-The-Go

Go loud and powerful with the PHA-1A’s USB DAC amp that converts and enhances music data from your portable device, so you can enjoy advanced High-Resolution Audio while out and about. Simply link the USB DAC amp to your headphones and a compatible PC, Xperia™, iPhone, iPad, iPod® or Walkman®, to begin magnifying your music experience on-the-go.

Sophisticated in Design, Functional in Size

The PHA-1A’s appeal lies in its design. Apart from its sleek aluminium casing that doubles-up as a protection cover from knocks and shocks, its small, lightweight body weighs around 5 ounces (150g), that makes it ultra-portable when you’re out and about. For enhanced convenience, a silicone band is provided for easy carrying when plugged in to other devices.

Technical Specifications

Additional Information

Package Contents
  • PHA-1A DAC / AMP unit
  • Digital cable for WALKMAN®
  • Digital cable for Xperia®
  • Micro-USB cable
  • Silicone belts (2 pcs)
  • Protection sheet
Colour Silver
Warranty 1 year (local)
Availability Preorder / Backorder (currently unavailable)
Product Type Amplifier (Headphone), DAC (Digital-Analog Converter)
Style/Type Portable
Features High-Res Audio Certified
Sampling / Bitrate PCM: Max. 192kHz/24bit
Frequency Response (Hz) 10-100 kHz
Impedance (Ω) 8Ω-600Ω
Output Power Approx. 148mW + 148mW (8Ω, 10% distortion) Approx. 80mW + 80mW (32Ω, 1% distortion) Approx. 16.4mW + 16.4mW (300Ω, 10% distortion)
Battery Life (hrs) Approx. 6h
Input Connectivity Apple Lightning, micro-USB, USB
Output Connectivity 3.5mm Stereo
Additional Tech Specs
Power Source / Battery Type Built-in lithium-ion rechargeable battery
Battery Charging Time Approx. 2h
Dimensions (W x H x D) Approx. 62 x 18.5 x 109 mm
Weight (Without Cord) Approx. 145g
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