Portable headphone amplifier/USB DAC
Item #: 158PHA2
This item is no longer available.
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Item #: 158PHA2
This item is no longer available.
Smartphones and portable music players are pretty amazing devices, but sometimes the sound quality of their headphone outputs can leave you flat. That's because cost constraints and power consumption issues usually rule out the use of high-performance headphone circuitry. That's where the Sony PHA-2 headphone amplifier and digital-to-analog converter comes in.
Small enough to take almost anywhere, it connects between your music player's or computer's headphone jack or digital output and your headphones to deliver the serious punch and clarity your tunes deserve. And for high-res music lovers, the PHA-2 can even decode PCM digital audio signals up to 24-bit/192kHz resolution and DSD audio sources at 2.8MHz / 5.6MHz, so you can enjoy better-than-CD audio quality. This potent little headphone amplifier's rechargeable battery supplies the power you need to pump out bigger, bolder sound. You'll immediately experience greater bass extension and low-frequency impact, along with more dynamic, detailed sound.
Sony's rugged PHA-2 features strong alloy bumpers to protect the volume knob and headphone connector.
The PHA-2 works with a wide array of devices. Its three separate USB ports give you a direct digital connection for your iPod®/iPhone®/iPad®, hi-res Walkman®, and a PC or Mac®. This allows the Sony to bypass the DAC in your player or computer, and decode your tunes with superior audiophile-quality precision. The PHA-2 also offers an analog input for connecting most MP3 players, smartphones and other audio devices, as well as a line output for connecting to a receiver or self-powered speakers.
Built like a Swiss watch, this Sony's rugged aluminum enclosure protects the presicion circuitry inside from outside interference and impacts. Strong alloy bumpers also help protect the volume knob and headphone connector. Plus, recessed control switches reduce the chance of accidental access during playback.
I began my high-res listening with “Life in the Fast Lane” by the Eagles, a song I must have heard hundreds of times. Yet listening to it with the PHA-2 was like hearing it with fresh ears. The layering of guitars in this song is masterful, and I found myself marveling at Joe Walsh's well-placed fills. I even noticed some guitar amplifier hum in the song's intro – something I'd never picked up before.
— David Brown, Crutchfield A/V Writer
High-performance headphones need high-quality amplification to perform up to their full potential. If you connect them directly to the headphone jack on your computer, iPod®, or stereo receiver, you may be disappointed. A separate headphone amplifier sends a stronger, cleaner signal to your headphones.
fantastic little portable amp/dac could not believe to hear what I've been missing all this time. It makes all your compressed MP3 files sound warm and smooth just like you were listening to your old vinyl on the go and easy to hook up to your home system with another cable. Built like a tank!!! Take your iPhone anywhere with audiophile quality. Would highly recommend it if you got the cash. Worth it!!!!
Pros: Everything,very well built!!!
Cons: A little expensive but worth the chance
Overview: The Sony PHA-2 is a battery-powered portable DAC (digital-to-analog converter) and headphone amplifier that lets you listen to high-resolution audio through your headphones. You can connect a PC, an iPod/iPhone/iPad, or a high-res capable Walkman to the unit using one of the three USB inputs. It will also work with analog devices as well.
Internal Components and Construction: The PHA-2's PCM1795 DAC samples PCM audio at 192kHz/24-bit, and DSD audio at 2.8/5.6MHz. The LME49860 operational amp delivers outstanding audio performance with virtually no distortion or noise. The TPA6120 headphone amp provides a wide 120dB dynamic range to make sure you can hear every detail in the music. On the outside, the unit features a compact brushed aluminum enclosure to protect the inside circuitry and components. Aluminum alloy "bumpers" on the ends provide further protection of the connecting cables and volume knob from hard impacts.
USB 2.0 Clock: The DAC is equipped with an asynchronous USB 2.0 clock signal generator that reduces timing inaccuracies when converting digital signals into analog waveforms. This results in a highly accurate DA conversion and jitter-free audio for superior audio reproduction that is as close to the original recording as possible.
Digital/Analog Connections: The PHA-2 has three USB digital inputs: a Micro USB port for PC and charging, a Type A USB for connecting an iPod/iPad/iPhone, and a Mini-B USB with an extra pin for connecting a High-Res supported Sony Walkman. The front panel features two stereo 3.5mm jacks--a headphone output and a Line Out, which doubles as an analog stereo input.
Note: The 3.5mm inputs only support 3-pole stereo miniplugs. Other plugs, including 2-pole and 4-pole stereo miniplugs are not supported.
Controls: The front-mounted large power/volume control knob with plenty of headroom to let you set the volume just where you want it. A 2-position gain switch (normal/high) on the side lets you match the headphone amp to various headphone impedances from 8 to 600 Ohms. Another 2-way switch is provided for selecting the output--headphones or the line output. On the back, there's a 4-way slide switch for selecting between the three USB inputs and the analog input.
Lithium-ion Rechargeable Battery: The PHA-2 is powered by a built-in 3.7-volt Lithium-ion rechargeable battery. The battery charges in approximately 7 hours via USB when connected to a PC. With the optional AC-UD20 USB AC adapter, charging time is only 3.5 hours. Battery life is approximately 17 hours with an analog input connection and 6.5 hours with a digital input connection.
Compatible Devices: The Sony PHA-2 is compatible with a wide variety of devices. With three USB inputs and an analog input, it can connect to most computers and portable audio devices:
Silicone Belts: The PHA-2 is designed to allow you to conveniently attach your portable device to the top. Two rubber rails, approximately 1-3/4" apart, let you rest your player on the top and secure it with two of the provided silicone belts. The belts lock in place in two grooves that run along the sides of the portable DAC. If your player is not wide enough to rest on the rails, a silicone rubber protection mat is provided to prevent scratches.
Yes Larry. The Lightning connector that came with with I-phone 5s & 6 plugs in your phone bottom--as if to charge--and the USB end (remove from A/C square two prong wall plug) goes right into Sony PHA-2 USB port on bottom end & then you slide small selector switch from "charge" to "digital in". SEE there is a 4 position selector switch for: 1)Audio in 2)High Res supported Walkman 3)Ipod IPad IPhone. 4)Pc (USB audio) Charge. SEE ALSO there are 3 distinct ports on bottom 1) Walkman plugin 2)USB 3)USB audio charge plugin. On top of Sony are 2 3.5mm ports: 1)Audio in/line out 2)Phones I love mine and use it with my IPhone 6 to play improved sound to my Klispsh headphones and with a male-male stereo 3.5mm cord into my Alpine Jeep Rubicon stereo and into a Klipsch Kmc-1 portable speaker. You can easily hear the improvement in all 3 applications giving greater clarity, less distortion, dynamics, and listening ease!! Bryon [ BRYON Sep 16, 2015 ]
I have not tried mine with an iPhone but I have 3 iPod classics and it works with all 3. My opinion would be if it works with iPods, it should work with the iPhone. Hope that helps. [ CLAUS I Sep 16, 2015 ]
Yes it connects from your lightning cord on your phone end to the usb on the amp end. Very simple out of the box. Hope this was helpful. Great little amp.?????? [ Brian Sep 16, 2015 ]
Yes. As long as you use the lightening connecter that came with your phone. [ DONALD N Sep 16, 2015 ]