HiBy R4 Android MP3 Player User Manual

1. Introduction

Thank you for choosing the HiBy R4 Android MP3 Player. This manual provides essential information for setting up, operating, and maintaining your device. The HiBy R4 is a high-fidelity digital audio player featuring Android 12, a quad-DAC array, Bluetooth 5.0, Wi-Fi connectivity, and support for various high-resolution audio formats including DSD, PCM, and MQA.

2. Package Contents

Please check the package for the following items:

• HiBy R4 Digital Audio Player
• USB Charging Cable
• User Manual

3. Device Overview

The HiBy R4 features a distinctive industrial design with a 4.7-inch high-resolution LCD screen. Familiarize yourself with the device's physical layout, including buttons, ports, and display.

Figure 3.1: Front view of the HiBy R4 Digital Audio Player, showcasing its 4.7-inch display and sleek design.

The device includes both a 3.5mm single-ended output and a 4.4mm balanced output for versatile headphone connectivity, alongside a standard Type-C port for charging and data transfer.

Figure 3.2: Close-up view of the HiBy R4's audio output ports (4.4mm Balanced, 3.5mm SE) and the USB Type-C port.

4. Setup

4.1 Charging the Device

Before first use, fully charge your HiBy R4. Connect the included USB charging cable to the device's Type-C port and a compatible 20W PD charger. A full charge typically takes approximately 2 hours.

4.2 Powering On/Off

• To power on: Press and hold the power button until the screen illuminates.
• To power off: Press and hold the power button, then select 'Power off' from the on-screen options.
• To restart: Press and hold the power button, then select 'Restart' from the on-screen options.

4.3 Initial Android Setup

Upon first power-on, follow the on-screen prompts to complete the initial Android 12 setup, including language selection, Wi-Fi connection, and Google account login (optional).

4.4 Inserting a Micro SD Card

The HiBy R4 comes with 32GB of internal storage. For expanded storage, you can insert a Micro SD card (up to 2TB) into the designated slot. Ensure the device is powered off before inserting or removing the card.

5. Operating Instructions

5.1 Navigating Android 12

The HiBy R4 runs on an open Android 12 system, allowing for a familiar smartphone-like experience. Swipe gestures and on-screen buttons are used for navigation. You can install third-party applications from the Google Play Store or other sources.

Figure 5.1: The HiBy R4's interface running on the Open Android 12 system.

5.2 Playing Audio Files

Use the pre-installed HiBy Music app or your preferred third-party music player to browse and play audio files stored on the device's internal memory or Micro SD card. The R4 supports various high-resolution formats including DSD, PCM, and MQA.

5.3 Volume Control

Adjust the volume using the physical volume buttons on the side of the device or through the on-screen volume slider in the notification panel.

5.4 User-Defined Function (FN) Key

The FN key on the device can be customized for quick access to various functions such as key lock or screen rotation. Configure its behavior in the device settings.

6. Connectivity

6.1 Bluetooth 5.0

The HiBy R4 features bidirectional Bluetooth 5.0, allowing it to send audio to Bluetooth headphones/speakers and receive audio from other Bluetooth devices. It supports high-definition codecs including UAT, LDAC, aptX, aptX HD, AAC, and SBC.

Figure 6.1: Diagram illustrating the HiBy R4's bidirectional Bluetooth audio capabilities and supported codecs.

6.2 Wi-Fi

Connect the HiBy R4 to a Wi-Fi network (2.4 GHz or 5 GHz) to access online streaming services, download apps, and perform firmware updates. It also supports DLNA/AirPlay/WiFi transmission for seamless audio sharing.

6.3 USB Connectivity

The Type-C port supports USB2.0 and USB3.2 Gen1 for fast data transfer. It can also function as a USB DAC or provide SPDIF output.

7. Audio Features

The HiBy R4 is engineered for high-fidelity audio reproduction.

• Quad-DAC Array: Equipped with four ES9018C2M DACs for superior digital-to-analog conversion.
• Dual-Circuit Design: Features a unique dual-circuit design for PCM/DSD, optimizing audio processing for different file types.
• Class A Amplification: An integrated Class A headphone amplifier ensures robust and clean audio output.

Figure 7.1: Visual representation of the Class A Amplification feature in the HiBy R4.

• High-Resolution Audio Support: Supports DSD 256, PCM up to 768kHz/32bit, and MQA 16x unfolding.

Figure 7.2: Graphic highlighting the HiBy R4's support for DSD 256, PCM 768kHz/32bit, and MQA 16x unfolding.

• Femtosecond-Grade Audio Clock: Utilizes specialized low-noise crystal oscillators (45.158 MHz and 49.152 MHz) for precise timing and reduced jitter.

8. Maintenance

8.1 Cleaning the Device

Use a soft, dry, lint-free cloth to clean the device's screen and body. Avoid using harsh chemicals or abrasive materials that could damage the finish.

8.2 Battery Longevity

To maximize battery life, avoid exposing the device to extreme temperatures. For long-term storage, charge the battery to approximately 50% and store it in a cool, dry place.

8.3 Firmware Updates

The HiBy R4 supports OTA (Over-The-Air) automatic firmware updates. Ensure your device is connected to Wi-Fi to receive and install the latest updates, which can improve performance and add new features.

9. Troubleshooting

If you encounter issues with your HiBy R4, refer to the following common solutions:

• Device not powering on: Ensure the battery is charged. Connect the device to a charger and try again.
• No sound output: Check headphone connections (3.5mm or 4.4mm). Verify volume levels. Ensure the correct output is selected in audio settings.
• Connectivity issues (Bluetooth/Wi-Fi): Restart the device and your router/Bluetooth accessory. Ensure the device is within range.
• Device freezing or unresponsive: Press and hold the power button for approximately 10-15 seconds to force a restart.
• Poor audio quality: Ensure you are using high-quality audio files. Check headphone impedance compatibility.

If problems persist, contact HiBy customer support for further assistance.

10. Specifications

10.1 Hardware Specifications

Figure 10.1: Detailed table of HiBy R4 Hardware Specifications.

10.2 Audio Specifications

Figure 10.2: Detailed table of HiBy R4 Audio Specifications for 3.5mm and 4.4mm outputs.

11. Warranty and Support

The HiBy R4 comes with a standard manufacturer's warranty. Please refer to the warranty card included in your package for specific terms and conditions. For technical support, troubleshooting assistance, or warranty claims, please contact HiBy customer service through their official website or authorized distributors.