audio technica / ATHA30USB

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It is a USB headphone amplifier.

■ USB Headphone Amplifier
■ High-quality digital playback of audio sources such as streaming. A headphone amplifier equipped with a 24-bit/96kHz USB DAC.

■ 24-bit/96kHz support allows you to enjoy high-resolution audio sources that exceed CD quality.
■ Coupling-capacitor-less circuitry reproduces deep bass.
■ Extruded aluminum body combines beauty and rigidity.
■ USB bus-powered for easy use, eliminating the need for an electrical outlet.
■ Enjoy clear sound with USB digital transmission that is less susceptible to noise from your PC.
■ Sampling frequency displayed with a two-color indicator.
■ Equipped with a highly visible LED indicator. Lights blue for 32/44.1/48kHz transmission and red for 96kHz transmission.

■ System Requirements
- A PC equipped with a USB 2.0-compatible USB port as standard
- CPU: Pentium 4 (1.8GHz or higher)
- RAM: 512MB or higher
- Supported OS: Windows 8, Windows 7, Windows Vista,
- Windows XP, Mac OS X
■ PC Interface
- USB 2.0 Interface
■ Headphone Output Jack
- Supported Sampling Frequencies: 32kHz, 44.1kHz, 48kHz, 96kHz
- Output: φ3.5mm stereo mini jack
- Frequency Response: 10Hz to 40kHz (-3dB, at 96kHz)
- Maximum Output Level: 13mW + 13mW (32Ω, T.H.D. 10%)
- Total Harmonic Distortion: 0.03% or less (32Ω, at 1mW output)
Signal-to-noise ratio: 97 dB or higher (JIS-A)

■ External dimensions (excluding protrusions): H10.6 × W61.5 × D21.0 mm

■ Weight (including cap): Approximately 15.5 g