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Portable (USB) Headphone Amplifier
The PHA-1 portable headphone amplifier is a two-channel high resolution DAC (digital-to-analog converter) combined with a high-quality headphone amplifier.The PHA-1’s micro USB port is USB audio compatible (96kHz/24bit) and it supports asynchronise data transfer mode. It doesn’t require the use of addtional drivers for use with MAC or PC. It’s durable metal construction, high quality components and outstanding sound quality make it ideal for use with MDR series professional headphones.
Micro USB port (for PC/MAC use) operates using USB bus powering
Professionally constructed in a durable aluminum enclosure with zinc alloy cast bumpers to minimize external interference and protect the volume control
High slew rate Texas Instrument TPA6120 headphone amplifier
Supports headphone impedances of 8 ohms to 600 ohms
Ultilizes high quality Wolfson WM8740 digital-to-analog converter
Maximum audio sample rate and resolution: 96 kHz / 24 bit
Built-in Lithium-ion battery (charged from Micro USB port). Battery life 10 hours using analog input or 5 hours when connected directly with an iPod/iPhone/iPad. Charge time 4.5 hours.
Side panel gain switch supports use with both high and low impedance headphones
Analog input
Stereo mini jack provides analog input directly to the analog headphone amplifier
Specs for analog input
Frequency Response: 10 Hz – 100 kHz. Signal to Noise Ratio: 110 dB. Headphone Power Output: 175mW + 175 mW @ 16 ohms, 125 mW + 125mW @ 24 ohms
USB Audio input
Micro-USB (TYPE B) connector (USB adapter cable supplied)
Specs for USB Audio input
Up to 96 kHz / 24-bit. Frequency Response: 10 Hz – 47 kHz . Signal to Noise Ratio: 96dB. Headphone Power Output: 40mW + 40mW @ 16 ohms, 70mW + 70mW @ 24 ohms
iPod/iPhone/iPad input
USB Type A connector dedicated for iPod/ iPhone/ iPad use (USB adapter cable supplied)
Specs for iPod/iPhone/iPad input
Up to 48 kHz / 24-bit. Frequency Response: 10 Hz – 23 kHz. Signal to Noise Ratio: 96dB. Headphone Power Output: 175mW + 175mW @ 16 ohms, 125mW + 125mW @ 24 ohms
Standard Accessories
Micro-USB Cable
30-Pin USB Cable
Stereo Mini Cable
Audio Cable for ‘WALKMAN’
Sliicone Belts (4)
Protection Sheet
