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Need help?Do you have a question about the Fostex HP-A4 and is the answer not in the manual?
Welcome message and advice to read the manual thoroughly for best performance.
Describes the HP-A4 as a high-performance DAC with a headphone amplifier, detailing its functions.
Lists the items included in the package, such as USB cable and rubber feet.
Explains the unit is USB powered and provides cleaning instructions.
Details the function of the volume knob and input/filter/gain/output selection switches.
Explains the power indicator and various input sample rate and DSD status indicators.
Describes the headphone, USB, and digital input/output connectors.
Details the function and usage of the microSD card slot for software upgrades.
Specifies the OS and USB port requirements for connecting a computer.
Instructions for installing the dedicated USB driver for Windows users.
Information on the need for specific software for DSD audio playback.
Guides on configuring sound output settings on Mac and Windows.
Explains how to select the audio input source and analog output destination.
Details the digital filter characteristics and headphone amplifier gain settings.
Guides on using the volume control knob for optimal sound quality.
Illustrates typical connection setups for audio sources and output devices.
Lists supported sampling frequencies and bit widths for USB and digital inputs.
Details output levels, impedance, THD, and frequency response for various outputs.
Covers microSD format, power requirements, dimensions, and weight.
States compatibility with EMC and Low Voltage Directives for European markets.
Describes the equipment's behavior under various electromagnetic immunity conditions.
Provides contact details for Fostex distributors across various European countries.
General
