This Sony Headphone amp is only 6 months old with less than 20 hours of use. It's in pristine condition. It's a great device... louder than your smartphone's output and a noticeable improvement in both upper end clarity and low end tightness. Shipping Included in Price. This item will only be shipped within the continental US. I'm only selling this because my girlfriend bought me a Sony PHA-3 five weeks after I bought this for my birthday (she didn't know I already had the pha-1). I decided to keep that one and sell this.
MANUFACTURES DETAILS:
Portable Hi-Res DAC/Headphone Amplifier
Easily connect to your portable digital music device or PC via USB input to enjoy powerful pintsize Hi-Res audio performance. The PHA-1A can playback Hi-Res music files up to 192kHz/24-bit.
PHA-1A Highlights:
Compact and lightweight for easy portability and use
Hi-Res audio DAC/amplifier supports up to PCM 192kHz/24 bit
Direct Digital Connection for smartphones DMPs iOs devices and PCs
Solid Sound: Wolfson DAC w/separate operational & headphone amps
Sleek and durable aluminum enclosure
PHA-1A Features:
14x the detail of MP3s
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.
Multiple connection options
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.
Super-smooth 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.
Built to last
A compact aluminum enclosure protects the delicate internal circuitry from outside interference and impacts while alloy bumpers protect the volume knob 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.
PHA-1A Specifications:
Amplifier Section
Impedance : Supported impedance: 8 - 600 Ohm (Normal - High)
Amplifier Inputs and Outputs
Digital Audio Input(s) : Inputs (2): USB Micro-B input (for PC Walkman and Xperia) USB Standard type A (for iPod/iPhone/iPad)
Audio
Volume Control : Rotary
Distortion : 0.01% or less (1 kHz)
Sampling Frequency : PCM (PC connection Maximum 192kHz/24-bit)
Frequency Response : 10 Hz - 100 kHz
General
Case Type : Aluminum chassis
Type of Use : Portable and Home
Impedance : Supports: 8 ohms - 600 ohms
Power On/Off : Integrated: Rotary power/volume knob
General Specifications
Recharging time : Approx. 3.5 hours (Connected to PC) Approx. 2 hours (Via AC-UD10 USB AC Adaptor sold separately)
Inputs and Outputs
Digital Audio Input(s) : Inputs (2): USB Micro-B input (for Computer Walkman and Xperia) USB Standard type A (for iPod/iPhone/iPad)
DC-In : Inputs (1): USB Micro-B input
Output(s) : Output (1): Headphones (stereo mini-jack only 3-pole supported)
Power
Battery Type : Built-in Lithium ion rechargeable battery
Power Source : DC 3.7 V: Built-in lithium-ion rechargeable battery DC 5 V: When charging via USB
Battery Life (Approx.) : Approx. 6 hours
Battery Indicator : Red LED when charging
Battery Charging (Approx.) : When connected to computer: Approx. 3.5 hours from empty to full When connected to AC outlet: Approx. 2 hours from empty to full
Output Power : Maximum output (when using built-in lithium-ion battery):
Approx. 148mW+148mW (8 Ω 10% distortion)
Approx. 80mW + 80mW (32 Ω 1% distortion)
Approx. 26mW+26mW (300 Ω 10% distortion)
Weights and Measurements
Dimensions (Approx.) : 62 mm x 18.5 mm x 1490 mm (2.4" x .73" x .22")
Weight (Approx.) : Approx. 5.11 oz. (145 g) - rechargeable battery included