HIFI WALKER H20 Ultra HiFi MP3 Player and A20Pro IEM Earphones Bundle User Manual

1. Introduction

This manual provides detailed instructions for the HIFI WALKER H20 Ultra HiFi MP3 Player and the A20Pro In-Ear Monitor (IEM) Earphones. Please read this manual thoroughly before using the product to ensure proper operation and to maximize your audio experience.

Product Highlights

• Precision-machined aerospace-grade aluminum body.
• 3.97" HD wide-angle LCD (480×800) touchscreen.
• ES9038Q2M DAC chip with 4-channel amplifier: 3.5mm & 4.4mm outputs.
• Powerful output: 2V (Single-Ended) / 4V (Balanced).
• Full touch control + physical buttons for easy blind operation.
• FPGA decoding for native DSD playback.
• 32bit/192kHz studio-grade audio, supports multiple formats.
• USB DAC function supported.
• LINE OUT & SPDIF digital output.
• 3000mAh battery for long playtime.
• Fast charging: full in 3 hours.
• ALPS knob for precise volume control.

Product Dimensions

2. Package Contents

Please check the package contents upon receipt. If any items are missing or damaged, contact customer support.

• H20 Ultra Player: The main Hi-Res audio player unit.
• USB-C Data Cable: For connecting to a computer or charging the device.
• Micro SD Card: Stores songs and provides storage for the player.
• User Manual: This document, providing operating instructions and customer support.
• Velvet Storage Bag: Protects the player from scratches and dust, and is easy to carry.

A20 Pro IEM Earphones Bundle Contents

• A20 Pro IEMs: In-Ear Monitor Headphones.
• 3 Pairs Silicone Eartips (S/M/L): For a comfortable and secure fit.
• User Guide: Specific instructions for the A20 Pro IEMs.
• Detachable Cable: With a 3.5mm jack.

3. Setup

H20 Ultra at a Glance

Physical Controls:

• Volume knob: Rotary knob for adjusting volume.
• POWER ON/OFF: Power/lock button.
• Previous song/fast rewind: Button for previous track or fast rewind.
• Play/pause: Button for play/pause functionality.
• Next song/fast forward: Button for next track or fast forward.

Ports:

• 4.4mm Balanced Headphone Jack (BAL): For balanced audio output.
• 3.5mm Single-ended Headphone Jack: For standard audio output.
• TF Card Slot: For inserting a Micro SD card.
• TYPE-C USB Port: For charging and data transfer.

Power On/Off

Press and hold the power/lock button for 3 seconds to turn the device on or off. The blue indicator light will illuminate when the device is powered on.

Screen Lock

Press the power/lock button once to lock the screen. Press it again to unlock. Unlock behavior can be customized in system settings.

TF Card Insertion/Removal

Insert the TF card into the slot until it clicks into place. To remove, gently press inward until it pops out slightly, then pull it out. Use high-speed TF cards (Class 10 or above) for smooth playback.

Connecting Earphones

The H20 Ultra features both 3.5mm single-ended and 4.4mm balanced headphone jacks. Insert your earphones into the appropriate jack.

A20 Pro IEM Earphones Setup

The A20 Pro IEMs come with a detachable cable and multiple eartip sizes. Choose the eartips that provide the best comfort and seal for optimal sound quality and noise isolation.

Connect the detachable cable to the IEMs using the gold-plated 0.78mm 2-pin connectors. Ensure a stable connection for extended durability and customization.

4. Operating Instructions

Main Interface

The H20 Ultra features five main functions: Playlist, My Music, File Browser, Playback Settings, and System Settings. In 'Display' style, a sixth function 'Play' is also shown.

Now Playing Interface

• Top: Song title.
• Middle: Album cover (or background image if none).
• Bottom: Playback progress + audio info.
• Controls: Play/Pause, skip tracks, change playback mode, add to favorites, open track menu.
• Switch songs: Tap previous/next icons or use side buttons; long press to fast-forward/rewind.
• Play/Pause: Tap screen icon or use physical key.

Bottom Icons:

• Playback Mode: Tap to switch between Sequential, Shuffle, Repeat One, and Repeat All.
• Favorite: Tap to add a song to “I Like” (icon turns red).
• Track Menu: View playlist position, add to playlist, view details, delete song.

Playlist Function Introduction

• All Music: Displays all songs on the memory card. Songs are automatically scanned and updated when the device is turned on or a new card is inserted (can be toggled in system settings). Manual scanning is also supported.
• Recently Played: Shows the songs played most recently.
• Albums: Songs are automatically grouped by album after scanning.
• Artists: Songs are sorted by artist automatically.
• Genres: Automatically categorizes songs by music genre.
• In all lists: You can tap a song to play it, add to favorites, view details, or delete it.
• Tip: Tap the up arrow to jump to the top of the "All Music" list. Tap the right arrow to locate the currently playing song.

Music List Functions

• My Favorites: Songs you've marked as favorites during playback are saved here.
• Recently Played: Displays songs you've played most recently.
• Playlists: Shows your custom playlists (up to 8 playlists supported).
• Recently Added: Shows songs recently added to any playlist.
• In all lists: Tap a song name to enter the playback interface.
• Tap the three dots to: Add to playlist, View song info, Remove or delete the song.

File Browsing

Tap TF card or OTG storage to view files and music lists stored on them. Tap a song to enter the playback interface. Tap the three dots next to a song to favorite, view info, or delete it. Tap a folder to enter its subdirectory.

Note: OTG storage requires a dedicated OTG data cable. Music files on OTG storage cannot be moved to the TF card. Only supported audio formats can be recognized by the system.

Playback Settings

Select "Playback Settings" in the main menu to configure music playback. Settings include:

• Playback mode: Sequential, Random, Single loop, List loop.
• Output selection: Headphone output (3.5mm default) or LO output (3.5mm LINEOUT, max volume, do not insert headphones).
• EQ Equalizer: Built-in (8 options: rock, classical, jazz, pop, dance, life, sadness, metal) or Custom (adjustable when built-in EQ is off).
• High and Low Gain: Choose low gain for low-impedance headphones, high gain for high-impedance headphones.
• Playback Gain: Automatically adjusts playback gain for different music/albums. Options: Off, Track, Album.
• DSD Output Mode: When outputting in SPDIF or USB DAC OUT, set to PCM, DOP (DSD to PCM), or Native mode (digital signals only).
• DSD Gain Compensation: Compensates for DSD gain (default 0).
• LR Channel Balance: Adjusts balance between left and right channels (default centered).
• Digital Filter: 4 options: High-pass filter-low delay, High-pass filter-phase compensation, Low-pass filter-low delay, Low-pass filter-phase compensation (default: no additional compensation).
• Maximum Digital Volume Output: When off, SPDIF and USB DAC volume can be adjusted locally. When on, output is fixed to maximum.
• Maximum Output Volume Limit: Set a maximum volume limit (e.g., 80 out of 100).
• Default Volume at Power On: Set and memorize the default volume for power-on.
• Fade in and Out: Gradually increases volume at song start, decreases at end.
• Seamless Playback: Shortens interval between song switching.
• Break Point Memory Playback: Continues playing from the last stop. Options: Off, Track (from beginning of last played track), Position (from exact last stop).
• Album Skipping: When playing from album list, if off, only current album's music plays. If on, jumps to next album.
• Folder Skipping: When playing from file list, if off, only current folder's music plays. If on, jumps to next folder.

System Settings

• Multi-language: Choose from English, Italian, German, French, and Spanish.
• Scan Mode: Set to automatically or manually scan songs.
• Homepage Style: Choose from "Street", "Display", "Gallery".
• Font Size: Choose "Small", "Medium", and "Large".
• Screen Saver: After locking, press power button or double-click screen to wake up. Options: Off, Album Cover (displays album art if available, default picture if not playing), Clock (real-time clock).
• Lock Key Options: Power (only power button works when locked) or All Keys (all buttons remain functional when locked).
• Battery Display: Show or hide battery percentage.
• Display Settings: Adjustable LCD brightness (default: 50%), Screen Timeout (default: 30s).
• Time Settings: Set system time.

About Bluetooth

The H20 Ultra supports Bluetooth 5.2 with aptX HD & LDAC, allowing for wireless HiFi streaming.

• Bluetooth: Turn on Bluetooth, view device name, adjust sound quality and volume, search and pair devices.
• HiBy Link: Control the player via mobile phone using the HiBy Music app over Bluetooth.

USB Mode

• Charge Only: For charging the device.
• Data: For file transfer via USB.
• DAC: Use the device as an external sound card for PC.

5. Maintenance

Charging

1. Via Adapter: Connect a 5V-1.5A (or above) adapter to a power outlet. Plug the USB cable into the adapter and the player. Full charge takes about 4 hours.
2. Via PC USB Port: Charging via PC is slower (under 500mA). If used, turn off the device while charging. Not recommended for regular use.
3. Long-Term Storage: Charge the device every 3 months if not in use.

Note: Slight heating during charging is normal, especially when the battery is low.

Cleaning

Use a soft, dry cloth to clean the device. Avoid using harsh chemicals or abrasive materials.

Firmware Upgrade

Download firmware from the official site, place it in the TF card root directory (FAT32), and perform the upgrade.

6. Troubleshooting

• System Reset: If the device is unresponsive, press and hold the power/lock button for 10 seconds to force a restart (the indicator light will turn off).
• No Sound (SPDIF Output): When no headphones are connected, audio defaults to SPDIF output. A dedicated USB-C to SPDIF adapter (sold separately) is required for connection to a decoder.
• Songs not playing/outdated list: If new songs are added but not scanned, the list may show outdated info and some songs may not play. Use the manual scan function in System Settings.
• Device heating during charging: This is normal, especially when the battery is low.
• Screen not responding: Ensure the screen is not locked. If unresponsive, perform a system reset.

7. Specifications

Performance Comparison (H20 Ultra vs. Other Players)

Sound Reproduction

8. User Tips

• For optimal sound quality, ensure your Micro SD card is Class 10 or above.
• When using the player as a USB DAC, remember to select the 'DAC' mode in the USB settings.
• Experiment with different eartip sizes for the A20 Pro IEMs to find the best fit for comfort and sound isolation.
• If you experience any unresponsiveness, a forced restart (holding power button for 10 seconds) can often resolve the issue.

9. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the official HIFI WALKER website or contact your retailer. A detailed user manual in PDF format is available for download: H20 Ultra User Manual (PDF).

10. Product Video

Watch this video for an overview of the HIFI WALKER H20 Ultra, including unboxing and key features.