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Product Highlights
This item is noncancelable and nonreturnable.
You Pay: $399.99
The HP-A4 24-Bit USB DAC Headphone Amplifier from Fostex supports PCM audio up to 24-bit/192kHz and DSD audio up to 5.6MHz. It features a front-panel 1/4" stereo headphone output, rear-panel stereo RCA outputs, and optical S/PDIF I/O. The HP-A4 has 2 gain staging levels, allowing you to boost the output of the amp by 10dB without needing to touch the volume knob. The selectable filter allows you to cut-off lower frequencies if desired. A USB cable and 4 rubber feet are included.
Input | |
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Sampling Frequency |
Up to 192 kHz (PCM) Up to 5.6 MHz (DSD) |
Bit Depth | Up to 24-bit |
Connector |
1x USB high speed 1x S/PDIF TOSlink (16/24-bit, 44.1 to 192 kHz) |
Output | |
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Connector |
1x 1/4" (6.3 mm) stereo headphone output 2x analog RCA outputs 1x S/PDIF TOSlink (16/24-bit, 44.1 to 192 kHz) |
Maximum Output |
100 mW (32 Ω loaded) RCA Outputs: 2 Vrms reference output level |
THD |
Headphone Output: Less than 0.04% at 1 kHz, 32 Ω loaded, 100 mW RCA Outputs: Less than 0.01% at 1 kHz |
Frequency Response |
20 Hz to 80 kHz +/-3dB (1 kHz, 32 Ω loaded, 100 mW, FS 192 kHz) RCA Outputs: 20 Hz to 80 kHz +/-3 dB (at FS 192 kHz) |
General | |
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SD Card Slot | 1x microSD slot (for firmware updates) |
Compatibility |
Windows: XP (SP2 or later), Vista, 7, 8 Mac: OS X 10.6 or later |
Power | USB bus powered |
Power Consumption | 2.5 W |
Dimensions (W x H x D) | 4 x 1 x 6" (113 x 34 x 155 mm), excluding protruded parts |
Weight | 17 oz (500 g), approximate |
Packaging Info | |
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Package Weight | 1.7 lb |
Box Dimensions (LxWxH) | 10.3 x 6.3 x 1.9" |