Table of Contents
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Table of contents
Safety instructions . . . . . . . . . . . . . . . . .E-2
FCC (U.S.A.) & ICES-003
(Canada) Information . . . . . . . . . .E-2
Table of contents . . . . . . . . . . . . . . . . . .E-3
Introduction . . . . . . . . . . . . . . . . . . . . . .E-3
Overview . . . . . . . . . . . . . . . . . . . . . . . .E-3
Supplied accessories . . . . . . . . . . . . . .E-3
About power supply . . . . . . . . . . . . . . .E-3
Maintenance . . . . . . . . . . . . . . . . . . . . .E-3
Front panel . . . . . . . . . . . . . . . . . . . .E-4
Rear panel . . . . . . . . . . . . . . . . . . . . .E-5
Computer requirement . . . . . . . . . . .E-6
Connecting a computer . . . . . . . . . . .E-6
Selecting the sound output
destination . . . . . . . . . . . . . . . . . . .E-6
Detail settings for sound . . . . . . . . . .E-7
Computer sound output volume . . . .E-7
[INPUT SEL] switch setting . . . . . . . .E-8
[FILTER] switch setting . . . . . . . . . . .E-8
[GAIN] switch setting . . . . . . . . . . . . .E-8
Volume level setting . . . . . . . . . . . . . .E-8
Connection example . . . . . . . . . . . . . . .E-9
Specifications . . . . . . . . . . . . . . . . . . . .E-9
Declaration of EC Directive . . . . . . . . .E-10
Fostex distributors list in Europe . . . . .E-10
Introduction
Thank you very much for purchasing the Fostex
product.
To ensure the best performance, read this manual
thoroughly before using the unit. Keep this manual
handy for future reference.
The Fostex HP-A4 is the high performance DA con-
verter with a headphone amplifier.
The unit 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 unit 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 5.6-MHz DSD source
in excellent quality.
• Features a high quality DAC (PCM1792A).
• Supports asynchronous mode controlled by a
crystal oscillator.
• Powered by USB.
• Supports 24-bit/192-kHz PCM playback as well
as 5.6-MHz DSD native playback.
* Note that to play back DSD audio, an appropriate
DSD audio playback software application is re-
quired on your computer.
• Equipped with a microSD (SDHC) card drive,
which can be used for future upgrade.
* Note that the unit cannot playback audio data on a
microSD card.
Supplied accessories
The following are supplied with the HP-A4.
• USB cable x 1
• Rubber feet x 4
• Owner's manual (this manual)
After purchasing the HP-A4, check all accessories
are included in the package. The four rubber feet
should be attached on the bottom of the unit by
yourself.
About power supply
The HP-A4 runs on USB bus power. Therefore
when you use the optical [DIGITAL IN] connector
as the input source, you have to connect the [USB]
connector to a device (computer, USB mobile pow-
er supply, etc.) that can provide USB bus power to
the unit and turn on the device.
Maintenance
If the unit becomes dirty, wipe it with a soft dry
cloth or a soft cloth dipped in water with neutral
detergent. Do not use volatile chemicals such as
benzine or thinner. Otherwise, the panel may be
damaged.
<Caution>:For your safety, disconnect the USB
power before cleaning.
E-3
Overview
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