Expert Service 1-661-257-9993 [Hours]

Fostex HP-A4

Buss-Powered 24-bit DAC Desktop Headphone Amplifier

In Stock. Only 1 Left!
|

List price $499.99

You Save: $189.99 (38.00%)

Thanks , You Pay:

$310.00

with warranty

+ FREE Shipping in US 48

Order within 16 hrs 55 mins to ship 12/9

Arrives by Thursday, Dec. 15 to zip 94107

Add an Extended Warranty

SquareTrade Product Warranty
Fast, Free Shipping

Within the US 48

60-Day Money-Back

Hassle Free Returns

Low Price Guarantee

Seen it for less? Click here

365-Day Coverage

Warranty assistance for a year

Item Added to Cart

Fostex HP-A4

Buss-Powered 24-bit DAC Desktop Headphone Amplifier

$310.00

Keep Shopping

Get Added Peace of Mind with SquareTrade

Why SquareTrade?

  • The #1-Rated Protection Plan
  • 5-Day Service Guarantee & Free Shipping
  • Protection from Normal, Everyday Use
You have added a warranty
$38.99
Add Warranty
3 years of protection

Get FAST answers from customers ASK a Question See questions answers

Fostex HP-A4 24-bit DAC Desktop Headphone Amplifier

The Fostex HP-A4 Buss-Powered 24-bit DAC Desktop Headphone Amplifier Offer an Incredible Listening Experience

The Fostex HP-A4 is a new, improved version of the acclaimed HP-A3. It supports PCM audio up to 24-bit/192 kHz and DSD audio up to 5.6MHz for superior playback functionality. Dedicated USB driver software is necessary to install on PC for Windows. Mac OS (10.6.1 or later) works with its own USB driver. HP-A4 operates on USB bus power and features a front-panel 1/4-inch stereo headphone output, rear-panel stereo RCA outputs, and optical S/PDIF I/O.

The Fostex HP-A4 Buss-Powered 24-bit DAC Desktop Headphone Amplifier Offer an Incredible Listening Experience

The HP-A4 has 2 gain staging levels, allowing you to boost the output of the amp by 10 dB without needing to touch the volume knob. HP-A4 offers quick and easy hi-resolution playback in combination with Fostex Audio Player software. Additional features include Hi/Lo gain selection (10 dB) for wider range of headphones, asynchronous transfer mode, and digital filter with selectable roll-off and cut-off characteristics. Founded in 1973, Fostex is an acclaimed manufacturer of location sound, multi-track recording, and speaker products.

The Fostex HP-A4 Buss-Powered 24-bit DAC Desktop Headphone Amplifier Offer an Incredible Listening Experience

General Features:

  • Fostex HP-A4 Buss-Powered 24-bit DAC Desktop Headphone Amplifier
  • USB buss powered operation without AC adapter
  • Linear PCM audio up to 24bit/192kHz and DSD audio up to 5.6MHz playback
  • Quick and easy hi-resolution playback in combination with "FOSTEX Audio Player" software
  • HI/LO Gain selection (10dB) for wider range of headphones
  • Asynchronous transfer mode by using the custom made crystal
  • Digital Filter selecting Roll-off characteristics and Cut-off characteristics according to the audio source
  • Complies with USB Audio Class 2.0 on Windows XP (SP2 or later) / Vista / 7 / 8 and MacOS X 10.6 or later
  • MicroSD (SDHC) card drive on the rear panel for future firmware updates
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product Specifications:

  • Input:
    • USB port sampling frequency up to 24bit/192kHz(PCM), 5.6MHz(DSD)
      • Interface USB high speed
    • Digital Connector: optical, square
      • Format S/PDIF (16bit/24bit: 44.1 – 192kHz)
  • Output:
    • Phones Connector: Stereo phone
      • Max Output: 100mW (32-ohm loaded)
      • THD: less than 0.04% at 1kHz, 32-ohm loaded, 100mW
      • Frequency response: 20Hz - 80kHz +/-3dB (1kHz, 32ohm loaded, 100mW, FS 192kHz)
    • Analog Connector: RCA Pin
      • Reference output level 2Vrms
      • THD: less than 0.01% at 1kHz
      • Frequency response: 20Hz - 80kHz +-3dB (at FS 192kHz)
    • Digital Connector: Optical, square
      • Format S/PDIF (16bit/24bit: 44.1 - 192kHz)
  • General:
    • MicroSD card slot: microSD card (SDHC)
      • Power: USB buss powered
      • Power Consumption: 2.5W
      • Accessories: 1 x USB cable (1.0m), 4 x rubber foot, manual
      • Dimensions: 113mm(W) x 34mm(H) x 155mm(D) excluding protruded parts
      • Weight: approx. 500g

Headphone Amplifier Specifications

Digital-to-Analog Converter (DAC)
A Digital-to-Analog converter (also known as a DAC) converts a digital audio signal into an analog signal. This is especially helpful for listen to music from digital sources, such as iPods and smart phones.
Built-in
Frequency Response
The range of frequencies the amplifier will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
20 - 80,000 Hz
THD (Total Harmonic Distortion)
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
0.01%
Input Connection
This is the manner in which the headphone amplifiers receive an input audio signal.
Coaxial and Optical
Output Connection
This is the manner in which the headphone amplifier will output the audio signal.
1/4" Plug
Number of Outputs
Some headphone amplifiers have a built-in splitter so multiple pairs of headphones can be connected to it. The number specified here is the number of headphones that can be connected to the amplifier.
3
Output Power
This is the output wattage of the headphone amplifier. It is measured in mW.
100 mW
Output Impedance
This is the output impedance of the headphone amplifier.
32 ohms
Power Requirement
This is the required way to give the unit power. Common power sources are 120V AC (Common house plugs), batteries, or a combination of the two. If the headphone amplifier uses batteries, this will list the type of batteries that are required. Please refer to the description to find out how many are required for the unit to be properly powered.
110 / 220V AC
Width
The width of the item from left to right (side-to-side) measured in inches.
4.45"
Height
The height of the item, measured from top to bottom, in inches.
1.33"
Depth
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
6.10"
Amplifier Style
Some headphone amplifiers are designed to be portable and others are meant to be placed on a desk. This will tell you what style of amplifier this item is.
Desktop

DAC Specifications

Power Requirement
This is the required way to give the unit power. Common power sources are 120V AC (Common house plugs), batteries, or a combination of the two. If the headphone amplifier uses batteries, this will list the type of batteries that are required. Please refer to the description to find out how many are required for the unit to be properly powered.
110 / 220V AC
Output Impedance
This is the amount of impedance that the microphone allows.
32 ohms
THD (Total Harmonic Distortion)
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
0.01%
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
20 - 80,000 Hz
Sample Rate
24-bit at 192 kHz

Specials with this Item

Promotions
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!
VIP Guarantee

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
0%
4 Star
0%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
0.0
Value
0.0
Features
0.0
Design
0.0
Usability
0.0
Hide answersShow all answers | Sort by
No questions have been asked about this item. Be the first!

Product Summary

Manufacturer

Model Number

HPA4

UPC

636827304221

Weight

2.01lbs

Internal SKU

hpa4

Internal Product ID

107167

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Fostex HP-A4