HEADPHONES

USB DAC Headphone Amplifier

PHA-2A

Picture of USB DAC Headphone Amplifier
Images of USB DAC Headphone Amplifier
Images of USB DAC Headphone Amplifier
Images of USB DAC Headphone Amplifier
Images of USB DAC Headphone Amplifier
Images of USB DAC Headphone Amplifier

Get more from your headphones

Breathe new life into your music collection with the PHA-2A headphone amplifier. Just plug in your amp and discover the difference of balanced sound and High-Resolution Audio. Sit back, relax and enjoy music that’s closer to the original recording.  

DSD

Direct Stream Digital 

Hear the authentic, intimate detail of analog sound from your digital audio with Double DSD (5.6 MHz) and DSD (2.8 MHz) high-quality digital audio coding.

Balanced connection

Balanced connection 

The newly developed Φ4.4mm balanced connection cable separates left and right sound signals, while minimising signal transmission loss and resulting sound deterioration.

PCM

Pulse Code Modulation 

Enjoy the best possible sound quality through a range of Sony devices and smartphones with up to 192 kHz / 32-bit PCM encoding.

Discover balanced audio

A balanced connection separates audio channels, eliminating interference. This ensures a distinct tone and enhanced dynamic range within an expansive acoustic field.

Balanced connection

How does a balanced cable work?

A ø4.4mm connection cable has two polarised signals that cancel each other out, reducing unwanted noise picked up from the wire to the amplifier. 

Balanced connection

Enjoy pure sound with balanced connection

Plus and minus amps independently drive the right and left signals generating a high stereo effect – so you can enjoy distinct High-Resolution Audio with no crosstalk.

High-Resolution Audio

3.2x more data transmitted

The way the artists truly intended

Enjoy the subtlest nuances of studio-quality sound in higher than CD quality with High-Resolution Audio. Passion for music unites every component from signal to speaker so it feels like the artist is performing right in front of you.

Pure sound meets precision engineering

Discover how developments in design make the PHA-2A easier to control, more intuitive to handle and a pleasure to listen to.

Clock generator

Clock generator

Clock generators set the sample rate timing for digital-to-analog conversion. Designed to work at multiple frequencies, the precise clock ensures audio is accurately reproduced, creating the stable sound the composer intended. 

Volume control

Volume control

A high quality volume dial regulates how voltage is delivered to the headphones. Low resistance ensures there is little signal lost, allowing you to precisely control the volume, for comfortable listening. 

Gain switch

Gain switch

A gain switch lets you adjust the input signal from the source, which in turn, affects the range of volume control. Depending on how sensitive your headphones are, the balance of gain and volume comes down to personal taste. 

Small, light and durable

With the lightweight chassis and silicone band, you can easily carry the amp with you. Its rugged aluminium case protects it from everyday knocks and shocks.  

Battery life

Enjoy up to five hours of balanced audio connection with a long battery life.

Weight

Weighing about 290g, the PHA-2A is easy to keep in your pocket.    

Cables

Comes with cables for Walkman®, Xperia, a micro USB and silicone band.

Connect with your device

Compatible with PC, Smartphones or WALKMAN® for sound quality that’s close to the original track.

Compatible devices
Compatible devices
Compatible devices
Specifications
Breathe new life into your music collection with the PHA-2A headphone amplifier. Just plug in your amp and discover the difference of balanced sound and High-Resolution Audio. Sit back, relax and hear sound that’s closer to the original recording.
  • High-Resolution Audio compatible

  • Drive headphones with more power than portable devices

  • Compatible with USB Audio, PCM 192 kHz/32-bit, DSD 2.8MHz, 5.6 MHz

  • Listen to music from PC, Smartphones and WALKMAN®

  • Up to five hours of balanced audio connection

Frequency Response (Hz)
10 - 100kHz(analog section)