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HD4 Home Music System

Tech_Specs
  • General specifications

    Amplifier type
    Dual class A/B monolithic

    Power output
    120W peak power total (30W RMS / 60W peak per channel), AES

    Drivers
    4″ Aramid fiber woofers, 3/4” silk dome tweeters

    Inputs
    3.5mm stereo mini-jack, USB, RCA L/R, Bluetooth

    Outputs
    Dual RCA variable line-out, 3.5mm mini-jack headphone output

    Input voltages
    110-240V 50/60Hz auto-switching

    SNR
    >95dB (typical A-weighted)

    THD+N
    <0.05% at all power settings

    Crosstalk
    <50dB

    Frequency response
    60Hz-22kHz +/-1.5dB

    Input impedance
    5K ohms unbalanced

    Input bit depth
    up to 24 bits native

    Input sample rate
    24-bit

    Protection
    Output current limiting, thermal over-temperature, power on/off transient protection

  • Bluetooth specifications

    Internal D/A converter
    PCM 5102

    Bluetooth receiver type
    Bluetooth 5.0 

    Supported codecs
    aptX HD, aptX with very low latency, aptX, AAC, SBC

    Wireless operation range
    Up to 100ft (30m) typical

    Input data rate
    Determined by Bluetooth

    Wireless latency
    ~30 milliseconds (ms)

  • USB specifications

    Connector type
    Micro-USB

    USB device class
    USB 1.1 or above

    Internal D/A converter
    PCM 5102

    Input bit depth
    24-bits

    Input sample rate
    44.1KHz/48KHz

  • Headphone amp specifications

    Headphone amp type
    OPA2134

    Full-scale headphone output level
    2.0V RMS

    Output impedance
    2 ohms

    Recommended headphone impedance range
    10 ohms to 10K ohms

  • Weights and measures

    Dimensions (each speaker HWD)
    9″(23cm) x 5.5″ (14cm) x 6.5″ (16.5cm)

    Weight (LEFT speaker powered)
    3.25kg/7.18lbs

    Weight (RIGHT speaker passive)
    2.42kg/5.35lbs

    Shipping weight
    4.5kg/10lbs per pair

    Shipping box dims (HWD)
    15.5″ (39cm) x 20″ (51cm) x 13″ (33cm)

  • Materials and construction

    18mm thick MDF cabinets with real wood veneer
    3/4″ (20mm) silk dome tweeters with neodymium magnets
    4″ (101mm) aramid fiber woofers with advanced voice coils