Fostex HP-A4BL Headphone Amplifier

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Product Code: 9999-17397
Fostex HP-A4BL Rear
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Fostex HP-A4BL Headphone Amplifier

The Fostex HP-A4BL Headphone Amplifier is an affordable USB DAC & Headphone Amp offering balanced connection for headphones that is becoming more popular in the market. In addition to the balanced headphone out, the HP-A4BL also complies with DSD Audio up to 11.2MHz.

The Fostex HP-A4BL Headphone Amplifier is a high performance DA converter with a headphone amplifier. The Fostex HP-A4BL Headphone Amplifier receives a digital audio signal from the USB connector or the optical digital connector, and converts it to an analog signal, which is fed from the analog line output connectors as well as the headphones output connectors. The Fostex HP-A4BL Headphone Amplifier can play back PCM audio as well as DSD audio natively. You can enjoy up to 24 bit/192 kHz PCM source as well as up to 11.2 MHz DSD source in excellent quality.

Fostex HP-A4BL Headphone Amplifier Features

  • Equipped with 4-pin XLR balanced output
  • Newly developed audio-grade capacitor is adopted
  • Highly precise crystal with low phase noise is adopted
  • Playback 24bit/192kHz PCM and 11.2MHz DSD audio
  • High performance DAC (Barrbrown PCM1792A) is equipped
  • Asynchronous transfer up to 192kHz/24bit compatible with USB Audio 2.0
  • HI/LO Gain selection (10dB) for wider selection of headphones
  • Digital Filter selecting Roll-Off characteristics and Cut-off frequencies

Fostex HP-A4BL Headphone Amplifier Specifications

  • Input:
    • USB Terminal:
      • Interface: USB 2.0 Hi Speed
      • Sampling Frequencies: PCM 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz DSD 2.8MHz, 5.6MHz, 11.2MHz
      • Quantization: 16bit, 24bit
    • Digital In Terminal:
      • Connector: Optical, Square
      • Format: S/PDIF
      • Sampling Frequencies: 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz
      • Quantization: 16bit, 24bit
  • Output:
    • Phones Balanced Terminal:
      • Connector: XLR (4-pin)
      • Maximum Output: 300mW or More (32 Ohm)
      • Load Impedance: 16 - 600 Ohm
      • THD: Less than 0.04% (at 1kHz)
      • Frequency Response: 20 Hz - 80 kHz (+-3dB, 32 Ohm, 100mW)
    • Phone Unbalanced Terminal:
      • Connector: 1/4" Stereo Jack
      • Maximum Output: 150mW or more (32 ohm) Applicable load impedance :16 - 600 Ohm
      • THD: Less than 0.04% (at 1kHz)
      • Frequency Response: 20 Hz - 80 kHz (+-3dB, 32 ohm, 100 mW)
    • Output (L,R) Terninal:
      • Analog Output Connector: RCA Pin
      • Reference Output Level: 2 Vrms (0 dBFS)
      • Applicable Load Impedance: Less than 10k Ohm
      • THD: Less than 0.01% (at 1kHz)
      • Frequency Response: 20 Hz - 80 kHz (+3 dB)
    • Digital Out Terminal:
      • Connector: Optical (Square)
      • Format: S/PDF
      • Frequency Response: 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz
      • Quantaization: 16, 24bit
  • General:
    • Micro SD Card Slot (for Firmware Upgrade Only) Format: FAT32
    • Compatible Card: Micro SD Card (SDHC), up to 32 GB
    • Power Supply: DC12V
    • Measurements: 150 (W) x 34 (H) x 157 (D)mm Including Protrusion
    • Weight: Approx. 630g
  • System Compatibility:
    • Windows OS: Win 7 / 8 / 8.1 / 10
    • Mac OS: OSX (10.6 or Later)

Fostex HP-A4BL Headphone Amplifier Includes

  • Fostex HP-A4BL Headphone Amplifier
  • 1 x USB Cable
  • 1 x AC Adapter
  • 4 x Rubber Feet
  • Owners Manual

Fostex HP-A4BL Headphone Amplifier Downloads

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  • 5

    Very good review, i have this DAC and very satisfied with this purchase, sound and build quality are amazing , I've tried it with many cans such as:with AKG 702 , AKG7XX, AKG 272HD, Beyerdynamic custom one pro studio, ATH M50X, Sennheiser hd600,strongly recommend it Yuriy.