Wireless Headphone Amplifier

AT-PHA55BT

Realizing bouncy wireless sound
and uncompromising high sound quality.

  • Hi-Fi grade ES9118 from ESS which is known for faithful reproduction of the original sound with DAC and amplifier parts.
  • Achieves highly transparent and clear sound quality by controlling the clock wirelessly transmitted from the input signal side and suppressing jitter.
  • Uses aluminum housing for suppressing unnecessary resonance in bodies.
  • 50mW + 50mW high output headphone amplifier exploiting full potential of connected headphones.
  • Compatible with LDAC/aptX/AAC.
  • Equipped with a switch for allowing selection of output impedance modes according to driver characteristics.
  • Sensitively adjustable to volume levels suitable for individual tracks with 32-step multistage digital volume.
  • LED indicator for displaying operation states.
  • 8 hours of continuous use.

    • audio technica AT-PHA55BT
    • audio technica AT-PHA55BT
  • AT-PHA55BT Bluetooth Specifications

    Communication Systems

    Bluetooth Version.4.2

    Operating Range

    Line of sght approx. 10m

    Operating Frequencies

    2.4GHz band (2.402GHz ~ 2.480GHz)

    Bluetooth Profile Support

    A2DP, AVRCP, HFP, HSP

    Audio Codec Support

    LDAC, Qualcomm aptX, AAC, SBC

    Content Protection

    SCMS-T

    Frequency Range

    20 ~ 40,000 Hz

    Operating Time

    Approx. 8 hours (Continuous use)
    Approx. 100 hours (Standby)

    Operating Temperature Range

    5℃ ~ 40℃

    Charge Time

    Approx. 3 hours

    Accessories Furnished

    USB charging cable (30cm),
    Clip, Pouch

    AT-PHA55BT Specifications (Amplifier)

    Maximum Output Power

    50mW + 50mW (16Ω,THD10%),
    25mW + 25mW (32Ω,THD10%),
    2.5mW + 2.5mW (300Ω,THD10%)

    Output Connector

    Ø3.5 mm stereo mini-jack

    Weight

    28 g

    Input Connections

    Micro USB Type-B

    Dimensions

    H79mm x W32mm x D11mm

    AT-PHA55BT Specifications (Microphone)

    Element

    Condenser

    Polar Pattern

    Omnidirectional

    Sensitivity

    -36dB (1V/pa at 1kHz)

    Frequency Response

    50 ~ 8,000 Hz

    Download

    audio technica support AT-PHA55BT_UM_TC.pdf - AT-PHA55BT User Manual (Chinese)
    audio technica support AT-PHA55BT_UM_EN.pdf - AT-PHA55BT User Manual (English)