Fostex HP-A4BL DAC & Headphone Amp
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.
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 frequenciesTechnical: [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 :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 Accessories :Rubber foot (x4), USB cable, Manual, AC adapter Power supply :DC12V Measurements :150(W) x 34(H) x 157(D)mm including protrusion Weight:approx. 630g