Why You Should Get It
  • Equipped with 4-pin XLR balanced output & 6.35mm single-ended output
  • Newly developed audio-grade capacitor is adopted
  • Highly precise crystal with low phase noise is adopted
  • Playback up to 24bit/192kHz PCM and 11.2MHz DSD audio
  • High performance DAC (Burrbrown 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
  • Firmware upgrade-able via microSD slot
Warranty
1 year (local)
In The Box
  • Fostex HP-A4BL Headphone Amplifier & USB DAC
  • Rubber foot (x4)
  • USB cable
  • Manual, AC adapter

Model HP-A4BL, designed being based on the current HP-A4, 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, it also complies with DSD Audio up to 11.2MHz.

Product Availability Discontinued
Product Type Amplifier (Headphone), DAC (Digital-Analog Converter)
Style/Type Desktop
Features Optical Input, Optical Output
Sampling / Bitrate 16bit/24bit: 44.1 – 192kHz
Frequency Response (Hz) 20Hz - 80kHz +/-3dB
Total Harmonic Distortion (THD) less than 0.01% at 1kHz
Amp Output Power (mW / W) 100mW (32-ohm loaded)
Microphone None
Input Connectivity Options Optical, USB
Output Connectivity Options 6.35mm Stereo, TOSLINK Optical (SPDIF), RCA (Line-Out), XLR (Dual 3-Pin) [Balanced]
Colour Black
Warranty 1 year (local)
Package Contents
  • Fostex HP-A4BL Headphone Amplifier & USB DAC
  • Rubber foot (x4)
  • USB cable
  • Manual, AC adapter
Additional Tech Specs
  • 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] terninal
    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 :20Hz - 80kHz (+-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 :20Hz - 80kHz (+-3dB, 32 ohm, 100mW)
  • [OUTPUT] (L, R) terninal (Analog output) Connector :RCA Pin
    Reference output level :2Vrms (0 dBFS) Applicable load impedance :less than 10k ohm THD :less than 0.01% (at 1kHz)
    Frequency Response: 20Hz-80kHz (+3dB)
  • [DIGITAL OUT] terminal
    Connector :Optical (square)
    Format :S/PDF
    Frequency Response :44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz
    Quantaization :16, 24bit
  • General
    [microSD] card slot (for firmware upgrade only) Format: FAT32
    Compatible card: microSD card (SDHC), up to 32GB
    Power supply :DC12V

If you're based in Singapore

  • spend $300 or more for free doorstep courier delivery.
  • add a few more bucks, for even quicker prioritised delivery.
  • self-collection is possible at our Showroom, based in Tai Seng. Find out where, and how to get to us here.
  • and yes, you may arrange your own 3rd party logistics to pickup your purchases on your behalf.
    Grab, Lalamove, GoGoX services are welcome.

 


 

Friends from Overseas, 

  • we do ship internationally.
  • shipping fees will be displayed during checkout.
  • do be aware of import tax/VAT that may apply.

 

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Model HP-A4BL, designed being based on the current HP-A4, 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, it also complies with DSD Audio up to 11.2MHz.

Product Availability Discontinued
Product Type Amplifier (Headphone), DAC (Digital-Analog Converter)
Style/Type Desktop
Features Optical Input, Optical Output
Sampling / Bitrate 16bit/24bit: 44.1 – 192kHz
Frequency Response (Hz) 20Hz - 80kHz +/-3dB
Total Harmonic Distortion (THD) less than 0.01% at 1kHz
Amp Output Power (mW / W) 100mW (32-ohm loaded)
Microphone None
Input Connectivity Options Optical, USB
Output Connectivity Options 6.35mm Stereo, TOSLINK Optical (SPDIF), RCA (Line-Out), XLR (Dual 3-Pin) [Balanced]
Colour Black
Warranty 1 year (local)
Package Contents
  • Fostex HP-A4BL Headphone Amplifier & USB DAC
  • Rubber foot (x4)
  • USB cable
  • Manual, AC adapter
Additional Tech Specs
  • 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] terninal
    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 :20Hz - 80kHz (+-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 :20Hz - 80kHz (+-3dB, 32 ohm, 100mW)
  • [OUTPUT] (L, R) terninal (Analog output) Connector :RCA Pin
    Reference output level :2Vrms (0 dBFS) Applicable load impedance :less than 10k ohm THD :less than 0.01% (at 1kHz)
    Frequency Response: 20Hz-80kHz (+3dB)
  • [DIGITAL OUT] terminal
    Connector :Optical (square)
    Format :S/PDF
    Frequency Response :44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz
    Quantaization :16, 24bit
  • General
    [microSD] card slot (for firmware upgrade only) Format: FAT32
    Compatible card: microSD card (SDHC), up to 32GB
    Power supply :DC12V

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Fostex HP-A4BL Headphone Amplifier & USB DAC
1 year (local)
S$699.00
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