Astell & Kern SR25 Manual de usuario

INSTRUCTION BOOK

SR25

User Guide

Package Contents

Product Overview

Power Management

Charging

Connections

Firmware Updates

Getting Started _01

Basic Operations

Home Screen

Notification Bar

Using Open APP Service

AK CONNECT

Listening to Music

Playlist Management

USB DAC Installation

How to Use USB Audio

CD Ripping

AK CD-Player

Car Mode

Settings

Connecting to Wi-Fi

Using Bluetooth

Equalizer Setup

Using the Device _02

Safety Pre-Cautions

Troubleshooting

Certifications

Registered Trademarks

Disclaimers

Specifications

Miscellaneous _03

CONTENTS

User Guide

Contents may be changed without prior notice to improve the

performance or quality of the product.

Package

Contents

Getting Started 02

Protective Film: Protect the device and its screen.

microSD Card Slot Cover: The cover is used to protect the

microSD card slot when not in use. It is installed in the

product by default.

USB Type-C Cable: For charging and data transfer.

Quick Start Guide: Basic overview of device functionality.

Warranty Card: Provides warranty details for your device.

Maintain a copy of this card since it may be required for

future technical support requests.

User Guide: The User Guide can be downloaded from the

Astell&Kern website.

[http://www.astellnkern.com Support > Download].

Quick Start Guide

& Warranty Card

USB Type-C CablemicroSD Card

Slot Cover

Protective FilmSR25

USB Type-C Port: - DC Power symbol.

For charging and data transfer.

microSD Card Slot: - microSD Card Slot symbol.

Insert a microSD card to access its files.

3.5mm Unbalanced Port:

- 3.5mm Unbalanced symbol.

For audio output, connect earphones or headphones that

utilize a 3.5mm jack.

Getting Started

User Guide

The appearance of the product, as well as the printed and

engraved information, may vary depending on the model.

Product

Overview

Previous/

Rewind

Next/

Fast-Forward

Play/Pause

USB Type-C Port

3.5mm Unbalanced Port

LCD

Touchscreen

Home Button

Volume

Power

2.5mm Balanced PortmicroSD Card Slot

5V 2A

User Guide

Getting Started

Power: - Power symbol.

Short press - Turns the screen on or off.

Press and hold - Turns the device on or off.

2.5mm Balanced Port: - 2.5mm Balanced Port symbol.

For audio output, connect earphones or headphones that

utilize a 2.5mm jack.

Previous/Rewind:

Short press - Play the previous song or restart the current

song.

Press and hold - Rewind the current song.

Play/Pause: Play or pause the current song.

Next/Fast-Forward:

Short press - Play the next song.

Press and hold - Fast-forward the current song.

Volume: Turn the wheel to adjust the playback output volume

level.

LCD Touchscreen: Display screen with touch control features.

Home Button: Press to return to the Home Screen.

Getting Started

User Guide

Resetting the device will not affect stored data or time settings. Do

not use the reset function while the product is in use. Doing so may

corrupt the data on the device.

This device has an automatic timeout feature to save battery power.

The screen will turn off if there is no user input during the period

defined in [Menu - Settings - Timer Settings - Screen Timeout]. (See

Page 46)

Reset Function

1. In case of unexpected device failure or freeze, press and

hold [Power] for 7 seconds to force a shutdown. The device

can then be restarted after the shutdown is complete.

Turning the Screen On/Off

1. While the screen is on, press the [Power] button to turn

off the screen.

2. Press [Power] button again to turn it on.

This device has an automatic shutdown feature to save battery

power. The device will turn off if there is no user input during the

period defined in [Menu - Settings - Timer Settings - Auto Power

Off] (See Page 46)

Powering the Device On/Off

1. Press and hold the [Power] button to turn on the device.

2. While the device is on, press and hold the [Power] button

to shut down the device. A confirmation message

will appear.

3. Press [OK] to turn off the device.

Power

Manage-

ment

User Guide

Getting Started

Charging via USB Wall Adapter

1. Commercially available 5V 2A output adapters may be

used for charging.

Charging

Charging time: Approx. 4.5 hours (Fully discharged, Power-off, 5V

2A adapter)

Using a 9V and 12V adapter will not charge the device and may cause

malfunctions.

The manufacturer shall not be responsible for problems caused by

the use of adapters that do not adhere to the recommended

specifications.

Getting Started

User Guide

Connec-

tions

3.5mm Unbalanced Port

1. Connect earphones or headphones to the 3.5mm

unbalanced port.

2.5mm Balanced Port

Connect earphones or headphones to the 2.5mm balanced port.

Getting Started

User Guide

Connecting to a Balanced Audio Device

1. Connect to an external audio device by using the 3.5mm

unbalanced port and 2.5mm balanced port.

Unbalanced

Port (Ground)

Balanced Port (LR)

Getting Started

User Guide

Connecting to a Computer

1. Turn on the device and your computer.

Use the USB Type-C cable to connect the device to a computer

in accordance with settings in [Menu - Settings - USB Mode].

[Default] Media Device (USB Drive): Transfer files from a

computer to the device.

DAC Input: Listen to music on a connected computer

through the device. (See Page 37)

Mac users need to download and install Android File Transfer from

the Astell&Kern website. [http://www.astellnkern.com > Support >

Download]

For an optimal connection, quit any unnecessary programs before

connecting the device to the computer.

Do not use cables other than the USB Type-C cable provided with the

device. Doing so may cause malfunctions.

Use USB 2.0 only on Mac.

Type-C-to-Type-C cable is recommended when connecting with a

MAC that supports Type-C port.

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