Portable Headphone Amplifier

  • Equipped with discrete circuit of our own design in the power amp stage
    • Improved sound start and response offered by powerful output of high-density voice signals, based on our own proprietary acoustic technology. Further enhances the resolution of the low- to high-frequency range.
  • The industry's first* adoption of operational amplifier, MUSES 8832, manufactured by NJR Co., Ltd. in the pre-amp stage
    • With its top-class resolving power, it expresses mid to high ranges to recreate a vast sound field, as well as the solid, rich low-frequency range of sound.
  • Supports 32 - 384kHz/32bit and DSD 128/64.
    • Adopted USB audio IC, BRAVO-HD SA9227, by SAVITECH Ltd. It realizes the full potential of the high-resolution sound source.
  • Employed the best-class DAC, ES9018K2M, by ESS Technology Inc.
    • Adopted for the portable amplifier is the high-end luxury class DAC IC supporting PCM 384 kHz/32bit and DSD 128/64.
  • Achieved a crystal clear mid-high range reproduction by suppressing unwanted distortion.
    • Incorporates TI's operational amplifier with ultra-low distortion, LME49720, for the I/V conversion circuit.
  • A high-capacity 3500mAh rechargeable battery supplies ample current.
    • A powerful sound is always delivered by the high-capacity lithium-polymer rechargeable battery which feeds plenty of current right across the entire circuit.
  • A precision-cut, aluminum volume control knob is located on the side.
    • On the side of the unit is high-quality volume controller (manufactured by ALPS Electric Inc.) which prevents any loss of signal-to-noise (SN) ratio during transmission. Because this is a portable device, the focus is on ensuring easy, fault-free operation.
  • Equipped with a 5-step sampling frequency indicator.
    • During playback, a quick glance tells you the sound source's sampling frequency.
  • Robust body using aluminium which is highly effective in vibration deadening
    • Chassis formed from highly-rigid aluminum. Easy portability is assured by rounded edges designed for a comfortable grasp.

    Dedicated Driver Software

    Liberate the real potential of the headphones!
    The ultimate reality brought by a clear sound image

    • audio technica AT-PHA100
    • audio technica AT-PHA100
  • AT-PHA100 Specifications

    Computer Interface

    USB 2.0 port or higher

    Load Impedance

    10 to 300 Ω

    Maximum Output Power

    100 mW + 100 mW (16 Ω T.H.D.10%)
    80 mW + 80 mW (32 Ω T.H.D.10%)
    10 mW + 10 mW (300 Ω T.H.D.10%)

    Frequency Response

    10 ~ 100,000 Hz (-1dB)

    Total Harmonic Distortion

    <0.001% (at 10 mW output, 32Ω load)

    Signal-To-Noise Ratio

    110dB (A - Weighted)

    Input Connections

    Analog : 3.5 mm gold-plated stereo mini-jack × 1
    Digital : USB (micro-B) × 1

    Output Connector

    3.5 mm gold-plated stereo mini-jack x 1

    Power Supply

    PC: USB bus power, DC5V/500 mA
    BATTERY: Built-in lithium-polymer rechargable battery

    Charge Time

    Approx. 10 hours from empty to full

    Battery Current / Life

    Digital connection: Approx. 6 hours
    Analog conn


    H27mm x W77mm x D116mm


    apporox. 240 g

    Accessories Furnished

    USB cable (1.0m), Audio cable (10 cm/3.5 mm gold-plated stereo mini-plug),
    Rubber mat ×1, Rubber band ×2


    audio technica support AT-PHA100_Manual_EN.pdf - Operation Manual (English)
    audio technica support AT-PHA100_Manual_CN.pdf - Operation Manual (Simplified Chinese)