1. Pengenalan
The HIFIMAN EF600 is a high-performance desktop balanced headphone DAC (Digital-to-Analog Converter) and amplifier. It integrates HIFIMAN's HYMALAYA PRO R2R DAC technology with a powerful headphone amplifier, offering versatile connectivity options including XLR, RCA, 6.35mm outputs, and high-resolution Bluetooth audio. Designed for home audio environments, the EF600 also functions as a headphone stand, combining functionality with a distinctive aesthetic.

Rajah 1.1: Depan view of the HIFIMAN EF600 unit.
2. Maklumat Keselamatan
- Baca semua arahan sebelum mengendalikan peranti.
- Jauhkan peranti daripada air, kelembapan dan suhu yang melampau.
- Jangan cuba membuka atau membaiki unit sendiri. Rujuk semua servis kepada kakitangan yang berkelayakan.
- Pastikan pengudaraan yang betul di sekeliling unit untuk mengelakkan terlalu panas.
- Use only the specified power supply and cables.
- Adjust volume levels responsibly to protect your hearing.
3. Kandungan Pakej
Sahkan bahawa semua item terdapat dalam pakej:
- HIFIMAN EF600 Unit
- Kabel Kuasa
- USB Cable (Type-A to Type-B or Type-C)
- Manual Pengguna (dokumen ini)
4. Ciri-ciri Produk
- HYMALAYA PRO R2R DAC: Features advanced R2R DAC technology for low distortion, low noise, and efficient power consumption.
- Powerful Balanced Output: Delivers 5.12W per channel, suitable for driving a wide range of headphones.
- Reka Bentuk Terma yang Dioptimumkan: Engineered with a tower case design for convection cooling, placing the center of gravity at the bottom and cooling at the top for stable operation.
- Ketersambungan Serbaguna: Includes USB-B, USB-C, Coaxial, RCA, and Balanced XLR inputs, along with XLR 4-pin balanced and 6.35mm single-ended headphone outputs, and XLR balanced/RCA single-ended line outputs.
- High-Resolution Bluetooth: Supports multiple Bluetooth codecs, including aptX-HD, for high-fidelity wireless audio streaming.
- Integrated Headphone Stand: The unit's design allows it to function as a convenient headphone stand.

Figure 4.1: Internal design and thermal management of the EF600.
5. Kawalan dan Sambungan
5.1 Panel Depan

Figure 5.1: Front panel controls and indicators.
- Gain/OS Indicators: Display current gain mode (High/Low) and Oversampling (OS) or Non-Oversampling (NOS) status.
- Penunjuk Input: Show the active input source (USB/Coaxial, Bluetooth, RCA, Balanced In).
- Input Selectors (Left/Right): Buttons to cycle through available input sources.
- Kawalan Kelantangan: Rotary knob to adjust output volume.
- XLR 4-Pin Balanced Headphone Output: Untuk fon kepala seimbang.
- 6.35mm Single-ended Headphone Output: For single-ended headphones.
5.2 Panel Belakang

Rajah 5.2: Sambungan panel belakang.
- Antena Bluetooth: Untuk sambungan Bluetooth tanpa wayar.
- Input USB-B: Sambungkan ke komputer atau sumber audio USB yang lain.
- Input Jenis-C: Connect to devices with USB-C output.
- Input sepaksi: Input audio digital.
- XLR Balanced Input (L/R): Analog balanced audio input.
- RCA Single-ended Input (L/R): Analog single-ended audio input.
- XLR Balanced Output (L/R): Analog balanced line output to external amppenghidup atau pembesar suara aktif.
- Penyambung Kuasa: Untuk menyambungkan kabel kuasa AC.
- Suis kuasa: Untuk menghidupkan atau mematikan unit.

Rajah 5.3: Panel hadapan dan belakang di atasview with OS compatibility notes.
6. Persediaan
6.1 Penempatan
Place the EF600 on a stable, flat surface. Ensure adequate space around the unit for proper ventilation, especially at the top, to facilitate convection cooling. The unit's design allows it to serve as a headphone stand, providing a convenient storage solution for your headphones.

Figure 6.1: EF600 used as a headphone stand.
6.2 Sambungan Kuasa
- Before connecting the power cable, locate the AC 115V/230V voltage suis pemilih pada panel belakang.
- Ensure the switch is set to the correct voltage for your region (e.g., AC 115 for North America, AC 230 for Europe).
- Connect the provided power cable to the power connector on the rear panel and then to a suitable AC power outlet.

Gambar 6.2: AC Voltage Pemilih.
6.3 Menyambungkan Sumber Audio
The EF600 offers multiple input options:
- USB-B / USB-C: Connect your computer, smartphone, or other digital audio source using a compatible USB cable. For Windows 10 and earlier operating systems, additional drivers may be required.
- Sepaksi: Connect digital audio sources such as CD players or media streamers via a coaxial cable.
- RCA Single-ended Input: Connect analog audio sources like preamppengangkat atau phono stages using RCA cables.
- XLR Balanced Input: For high-quality analog balanced audio input from compatible sources.
6.4 Connecting Headphones or External Amppenghidup
The EF600 provides several output options:
- XLR 4-Pin Balanced Headphone Output: For headphones equipped with a 4-pin XLR balanced connector.
- 6.35mm Single-ended Headphone Output: Untuk fon kepala dengan penyambung hujung tunggal 6.35mm (1/4 inci) standard.
- XLR Balanced Output (L/R): To connect the EF600's DAC output to an external balanced amppembesar atau pembesar suara aktif.
- RCA Single-ended Output (L/R): To connect the EF600's DAC output to an external single-ended amppembesar atau pembesar suara aktif.
7. Operasi
7.1 Hidupkan/Mati Kuasa
Flip the power switch on the rear panel to the 'ON' position to power on the unit. Flip it to 'OFF' to power down.
7.2 Pemilihan Input
Use the Left and Right Input Selector buttons on the front panel to cycle through the available input sources (USB/Coaxial, Bluetooth, RCA, Balanced In). The active input will be indicated by the corresponding LED on the front panel.
7.3 Tetapan Gain
The EF600 features different gain modes (High Gain, Low Gain) and Oversampling (OS) or Non-Oversampling (NOS) modes. These settings can be selected via the input selector buttons, and their status is indicated by the LEDs on the front panel. Experiment with these settings to find the optimal sound for your headphones and preferences.
7.4 Kawalan Kelantangan
Rotate the large volume knob on the front panel to adjust the output level of the connected headphones or line outputs. Start with a low volume and gradually increase it to a comfortable listening level.
7.5 Berpasangan Bluetooth
- Ensure the Bluetooth antenna is securely attached to the rear panel.
- Select Bluetooth as the input source using the front panel input selector. The Bluetooth indicator LED will illuminate.
- On your source device (e.g., smartphone, tablet), enable Bluetooth and search for available devices.
- Select 'HIFIMAN EF600' from the list of devices to pair.
- Once paired, the Bluetooth indicator LED on the EF600 may change status (e.g., solid light) to confirm connection.
- The EF600 supports various Bluetooth codecs, including aptX-HD, for high-quality wireless audio.

Figure 7.1: Supported Bluetooth codecs.
8. Penyelenggaraan
- Pembersihan: Use a soft, dry cloth to clean the exterior of the unit. Avoid using liquid cleaners or solvents.
- Pengudaraan: Pastikan bukaan pengudaraan tidak disekat oleh habuk atau serpihan. Bersihkan secara berkala dengan berus lembut atau udara termampat.
- Storan: Jika menyimpan unit untuk tempoh yang lama, putuskan sambungannya daripada kuasa dan simpan di tempat yang sejuk dan kering.
9. Penyelesaian masalah
| Masalah | Kemungkinan Punca | Penyelesaian |
|---|---|---|
| Tiada kuasa | Power cable not connected; Power switch off; Incorrect voltagtetapan pemilih e. | Ensure power cable is securely connected. Turn power switch ON. Verify AC voltagPemilih e ditetapkan dengan betul untuk rantau anda. |
| Tiada suara dari fon kepala | Incorrect input selected; Volume too low; Headphones not properly connected; Faulty headphones. | Select the correct input source. Increase volume. Ensure headphones are fully plugged in. Test with another pair of headphones. |
| Penggandingan Bluetooth gagal | Bluetooth not selected as input; Device too far; Interference; EF600 already paired to another device. | Select Bluetooth input. Move source device closer. Ensure no metal objects are near the EF600's antenna. Disconnect from other devices. |
| Audio yang diputarbelitkan | Source audio quality; Incorrect gain setting; Volume too high; Faulty cable. | Check source audio quality. Adjust gain settings. Reduce volume. Try a different cable. |
| Input USB tidak dikenali | Incorrect USB cable; Driver issue (Windows); USB input not selected. | Try a different USB cable. Install necessary drivers for your operating system (if applicable). Select USB input. |
10. Spesifikasi
| Ciri | Spesifikasi |
|---|---|
| Nama Model | EF600 |
| Teknologi Ketersambungan | Berwayar, Wayarles (Bluetooth) |
| Teknologi Komunikasi Tanpa Wayar | Bluetooth (supports aptX-HD, LDAC, AAC, SBC) |
| Jack Fon Kepala | 6.35 mm, XLR 4-pin |
| Kuasa Keluaran | 5.12W per channel (Balanced) |
| Julat Kekerapan | 20 Hz - 20,000 Hz |
| Impedans | 32 Ohm (typical headphone impedance) |
| bahan | logam |
| Dimensi Produk | 4.09 x 6.5 x 11.14 inci (104 x 165 x 283 mm) |
| Berat Barang | 6.34 paun (2.88 Kilogram) |
| Pengeluar | HIFIMAN |

Rajah 10.1: Dimensi Produk.
11. Waranti dan Sokongan
HIFIMAN products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please refer to the official HIFIMAN webtapak atau hubungi perkhidmatan pelanggan mereka secara langsung. Simpan bukti pembelian anda untuk tuntutan waranti.





