HA-1 Portable Headphone Amplifier

• Model Number: HA-1
• Controls: 3-pushbuttons; volume up, volume down, and standby/mute
• Indicators: Blue LED for power on, Orange LED for charge status
• Input: Audio input from iPod, Zen, CD Player, etc.. 3.5mm(1/8") stereo audio jack
• Output: 3.5mm(1/8") stereo audio jack, capable to drive most headphones
• Battery charger: USB battery charger with 5-pin Mini-USB connector
• Battery type: Lithium Ion
• Frequency Response: 20Hz to 20kHz
• Amplifier Signal to Noise Ratio: 100dB
• Digital Volume Control: -52dB to 12dB (42 steps)
• Gain: 12dB in 1dB steps
• Physical Size: 2.6" x 2.6" x 1.1"