1. Introduction
The HIFIMAN EF500 is a versatile desktop balanced headphone DAC and amplifier designed for high-fidelity audio reproduction. It features the advanced HYMALAYA R2R LE DAC, offering low distortion and noise, and supports various input and output options, including streaming media capabilities. This manual provides essential information for setting up, operating, and maintaining your EF500 unit.
2. Safety Information
Please read and understand the following safety precautions before operating the HIFIMAN EF500:
- Do not expose the unit to water or excessive moisture.
- Avoid placing the unit near heat sources or in direct sunlight.
- Ensure proper ventilation to prevent overheating.
- Use only the provided power cable.
- Do not attempt to disassemble or repair the unit yourself. Refer all servicing to qualified personnel.
- Keep out of reach of children.
3. Package Contents
Verify that all items are present in the box:
- HIFIMAN EF500 Unit
- Power Cable
- User Manual (this document)
4. Product Overview
The HIFIMAN EF500 serves as both a DAC and a headphone amplifier, designed to be a central component of your home audio setup. Its vertical design also functions as a headphone stand.
4.1 Front Panel
The front panel provides access to primary controls and headphone outputs.
Figure 1: Front view of the HIFIMAN EF500 unit, showcasing its sleek design and front-facing controls.
Figure 2: Detailed diagram illustrating the controls and ports on both the front and rear panels of the EF500.
- 4-level Function Switch: Selects between High Gain NOS, High Gain OS, Low Gain OS, and Low Gain NOS modes.
- Volume Control: Adjusts the output volume.
- 6.35mm Single-ended Headphone Output: Standard headphone jack.
- XLR 4-Pin Balanced Headphone Output: For balanced headphone connections.
4.2 Rear Panel
The rear panel houses various input and output connections for source devices and external amplifiers.
Figure 3: Rear view of the HIFIMAN EF500, showing all available input and output ports.
- XLR Balanced Output (R/L): Balanced line outputs for connecting to external amplifiers or active speakers.
- RCA Single-ended Output (R/L): Unbalanced line outputs for connecting to external amplifiers or active speakers.
- Network Connector: Ethernet port for multimedia streaming.
- Type-C Input: USB Type-C input for digital audio.
- Coaxial Input: Digital coaxial audio input.
- USB-B Input: Standard USB-B input for digital audio from a computer.
- Coaxial/NET+USB Function Switch: Selects between coaxial, network, or USB input sources.
- Power Switch: Turns the unit on or off.
- Power Connector: For connecting the power cable.
5. Setup
5.1 Placement
The HIFIMAN EF500 is designed to function as a 2-in-1 headphone stand and amplifier. Place it on a stable, flat surface with adequate ventilation. Ensure no objects obstruct the vents on the unit.
Figure 4: The EF500 unit serving as a headphone stand, demonstrating its dual functionality.
5.2 Power Connection
- Connect the supplied power cable to the Power Connector on the rear panel of the EF500.
- Plug the other end of the power cable into a suitable AC power outlet.
5.3 Connecting Audio Sources
The EF500 supports multiple digital audio inputs:
- USB-B Input: Connect your computer or other USB audio source using a USB-B to USB-A cable.
- Type-C Input: Connect compatible devices using a USB Type-C cable.
- Coaxial Input: Connect digital audio sources (e.g., CD player, media streamer) using a coaxial digital cable.
- Network Connector: Connect an Ethernet cable from your router for streaming media.
5.4 Connecting Headphones or External Amplifiers
- Headphones: For direct listening, connect your headphones to either the 6.35mm Single-ended Headphone Output or the XLR 4-Pin Balanced Headphone Output on the front panel.
- External Amplifiers/Active Speakers: For connecting to a separate power amplifier or active speakers, use the XLR Balanced Output (R/L) or RCA Single-ended Output (R/L) on the rear panel.
6. Operating
6.1 Power On/Off
To power on the EF500, toggle the Power Switch on the rear panel to the 'ON' position. To power off, toggle it to the 'OFF' position.
6.2 Input Selection
Use the Coaxial/NET+USB Function Switch on the rear panel to select your desired input source (Coaxial, Network, or USB).
6.3 Gain and Operating Mode Selection
The 4-level Function Switch on the front panel allows you to select different gain and oversampling (OS) modes:
- High Gain NOS: High gain, Non-Oversampling mode.
- High Gain OS: High gain, Oversampling mode.
- Low Gain OS: Low gain, Oversampling mode.
- Low Gain NOS: Low gain, Non-Oversampling mode.
Experiment with these modes to find the best sound profile for your headphones and listening preferences.
6.4 Volume Adjustment
Rotate the Volume Control knob on the front panel to adjust the audio output level. Start with a low volume and gradually increase it to a comfortable listening level.
6.5 Streaming Media
The EF500 supports streaming media via its Network Connector. You can stream music from applications like Spotify and Tidal directly to the unit. Refer to the video below for a demonstration:
Video 1: This video demonstrates how to initiate streaming from Spotify and Tidal applications to your HIFIMAN EF500 unit, showcasing the device selection process within the streaming apps.
7. Maintenance
To ensure the longevity and optimal performance of your HIFIMAN EF500, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to wipe the exterior of the unit. Avoid using abrasive cleaners, solvents, or chemical sprays.
- Dust: Keep the unit free from dust accumulation, especially around the vents, to maintain proper airflow.
- Storage: If storing the unit for an extended period, disconnect it from power and store it in a cool, dry place.
8. Troubleshooting
If you encounter issues with your HIFIMAN EF500, refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cable not connected; Power switch off; Power outlet issue. | Ensure power cable is securely connected. Toggle power switch to 'ON'. Test power outlet with another device. |
| No sound output | Incorrect input selected; Volume too low; Headphones/speakers not connected properly; Source device issue. | Verify input selection using the rear switch. Increase volume. Check all audio cable connections. Ensure source device is playing audio. |
| Distorted sound | Volume too high; Incorrect gain setting; Faulty cable; Source audio quality. | Reduce volume. Adjust 4-level Function Switch. Try different audio cables. Check source audio file quality. |
| Streaming issues | Network connection problem; App settings. | Ensure Ethernet cable is connected and network is active. Check streaming app's device selection (as shown in Video 1). Restart router/EF500. |
If the problem persists after trying these steps, please contact HIFIMAN customer support.
9. Specifications
| Feature | Specification |
|---|---|
| DAC Architecture | HYMALAYA R2R LE |
| Balanced Output Power | 4.5 watts |
| Dimensions (Package) | 12.24 x 11.89 x 6.5 inches |
| Item Weight | 8.1 pounds |
| Model Number | EF500 |
| Manufacturer | HIFIMAN |
| First Available Date | April 19, 2024 |
10. Warranty and Support
HIFIMAN products are designed for durability and performance. For warranty information and support, please refer to the official HIFIMAN website or contact their customer service directly. Keep your proof of purchase for warranty claims.
Optional protection plans may be available for extended coverage:
- 2-Year Protection Plan
- 3-Year Protection Plan
- Complete Protect (monthly plan)
For further assistance, visit the HIFIMAN Store on Amazon or contact the manufacturer directly.
