(Headphone Amplifier)





Product No.:
UPC: 027242868717
In Stock

D/A Converter or Processor


or Add to Wishlist

Easily connect to your PC or compatible digital music device via USB input to enjoy Hi-Res audio playback with the PHA-2 portable DAC/headphone amplifier. The PHA-2 samples PCM sources at 192kHz/24-bit and DSD sources at 2.8/5.6MHz. The high fidelity DAC, op-amp and headphone amplifier circuits ensure you hear every detail of your music.

Sony PHA-2 High-Res Portable DAC/Amplifier

The new PHA-2 portable headphone amplifier was conceived to deliver superior sound reproduction from a variety of audio sources and is the first portable DAC/amplifier to be compatible with virtually every high-resolution digital file format, including up to 192 kHz/24-bit PCM and both DSD (2.8MHz) and Double DSD (5.6MHz). Listeners can also enjoy upgraded sound quality with MP3 files and other music sources.

It features a variety of advanced technologies, including such refinements as an Asynchronous Transport Mode which utilizes a dedicated signal generator to reduce timing errors for more accurate, jitter-free converter performance. It also incorporates a high precision D/A converter, along with such devices as a custom headphone amplifier IC with high slew rate, ultra-low distortion operation; OCL (output capacitor-less) current feedback architecture; plus a dual power supply operation for more stable and accurate reproduction.
All of these select components are enclosed in a durable aluminum chassis which is fully protected from external interference. The PHA-2 headphone amplifier also has a variable gain headphone input that supports a wide range of impedances; as well as Zinc die-cast bumpers to protect the volume control and headphone connector from external shock and vibration.

The PHA-2 can be easily connected to both PC and Mac® computers via its USB 2.0 interface, and also includes a dedicated digital input for iPod®, iPhone® and iPad® products. Other portable audio sources such as Android™ smartphones and digital music players can be connected via the analog audio input. The PHA-2 comes with a built-in Lithium-ion battery which runs up to 6.5 hours with a digital connection and up to 17 hours with an analog connection on a single charge.


  • Full Hi-Res audio: PCM 192kHz/24 bit, DSD 2.8/5.6MHz
  • Direct Digital Connection for PC and Apple® devices
  • Enhances non hi-res music sources (via analog input)
  • Asynchronous, precision USB clock for superior sound
  • Premium DAC with separate operational and headphone amps
  • Durable aluminum enclosure with protective alloy bumper
  • Selectable gain supports impedances from 8 to 600 Ohm
  • Lithium-ion battery for up to 17 hours battery life
  • Line-out to connect external amp or active speaker
  • Mounting straps, protection sheet and cables included


Main Specifications

Product Description:Sony PHA-2 - headphone amplifier
Product Type Headphone amplifier
Dimensions (WxDxH) 2.7 in x 5.5 in x 0.9 in
Weight 9.5 oz
Sound Output Mode Stereo
Audio Specifications Amplifier - Response Bandwidth - 10 - 100000 Hz - THD - 0.01%
Battery Amplifier battery - rechargeable - lithium ion

Extended Specifications

Product Type Headphone amplifier
Width 2.7 in
Depth 5.5 in
Height 0.9 in
Weight 9.5 oz

Audio System
Sound Output Mode Stereo
Audio Specifications Amplifier - Response Bandwidth - 10 - 100000 Hz - THD - 0.01%

Connector Type Headphones ( mini-phone stereo 3.5 mm )
Audio line-in ( mini-phone stereo 3.5 mm )
Audio line-out ( mini-phone stereo 3.5 mm )
USB ( 5 pin Micro-USB Type B )
IPhone / IPod / IPad docking

Battery Amplifier battery - rechargeable - lithium ion

Be the first to write a review for this item OR just rate it