HIFIMAN SUNDARA Over-Ear Full-Size Planar Magnetic HiFi Stereo Wired Headphones User Manual

Introduction

Thank you for choosing the HIFIMAN SUNDARA Over-Ear Full-Size Planar Magnetic Headphones. The SUNDARA headphones are engineered to deliver an exceptional audio experience, featuring an ultra-fine diaphragm for a wide frequency response and detailed sound. This manual provides essential information for the proper setup, operation, and maintenance of your headphones.

The Sanskrit word "Sundara" literally means "Beautiful," and these planar magnetic headphones embody this description in every aspect, from their sleek design to their superior sound reproduction.

What's Included

Upon unboxing your HIFIMAN SUNDARA headphones, please ensure all the following components are present:

Pair of HIFIMAN SUNDARA Headphones
1.5m Headphone Cable (3.5mm plug)
6.35mm Headphone Adapter
Pair of Ear Pads (mounted on headphones)
Owner's Guide (this manual)

Contents of HIFIMAN SUNDARA box including headphones, cable, and adapter

Figure 1: Included accessories with the HIFIMAN SUNDARA headphones. This image shows the headphones, the detachable 3.5mm cable, and the 6.35mm adapter.

Setup

Follow these steps to set up your HIFIMAN SUNDARA headphones for optimal listening:

Connect the Cable: Insert the 3.5mm plugs of the headphone cable into the corresponding jacks on the bottom of each earcup. Ensure they are fully inserted for a secure connection. The cable is detachable for convenience and durability.
Connect to Audio Source:
- For devices with a 3.5mm audio jack (e.g., smartphones, laptops, tablets), connect the other end of the headphone cable directly to the device's audio output.
- For devices with a 6.35mm (1/4 inch) audio jack (e.g., home audio receivers, professional audio equipment), attach the included 6.35mm adapter to the 3.5mm plug of the headphone cable, then connect to your audio source.
Adjust Fit: Place the headphones on your head. Adjust the headband by sliding the earcups up or down along the metal frame until they comfortably cover your ears. The weight-spreading strap ensures outstanding comfort during extended listening sessions.

Figure 2: Front view of the HIFIMAN SUNDARA headphones, showcasing the planar magnetic drivers and comfortable headband design.

Operating Instructions

The HIFIMAN SUNDARA headphones are designed for high-fidelity audio reproduction. Here are some guidelines for operation:

Volume Control: Adjust the volume directly from your audio source. The SUNDARA headphones do not have inline volume controls.
Audio Quality: For the best audio experience, use high-quality audio files and a capable audio source. While the SUNDARA can be driven by portable devices, a dedicated headphone amplifier or DAC (Digital-to-Analog Converter) can further enhance their performance, especially for critical listening.
Open-Back Design: The SUNDARA features an open-back design, which provides a wide soundstage and natural sound reproduction. This design also means that sound can leak out and ambient noise can enter. They are ideal for quiet listening environments.

Figure 3: A hand holding the HIFIMAN SUNDARA headphones, illustrating their sleek matte black finish and robust metal construction.

Maintenance

Proper care will ensure the longevity and performance of your HIFIMAN SUNDARA headphones:

Cleaning: Use a soft, dry cloth to wipe the earcups and headband. Do not use liquid cleaners or solvents, as they may damage the finish or internal components.
Storage: When not in use, store the headphones in a clean, dry place, away from direct sunlight and extreme temperatures. Avoid placing heavy objects on top of them.
Cable Care: Handle the detachable cable gently. Avoid sharp bends or excessive pulling, which can damage the internal wiring.
Ear Pad Replacement: The ear pads are designed to be replaceable. If they become worn or damaged over time, contact HIFIMAN support for replacement options.

HIFIMAN SUNDARA headphones resting on a wooden shelf

Figure 4: The HIFIMAN SUNDARA headphones displayed on a wooden surface, highlighting their elegant design and open-back grilles.

Troubleshooting

If you encounter any issues with your HIFIMAN SUNDARA headphones, please refer to the following common problems and solutions:

Problem	Possible Cause	Solution
No sound or low volume	Cable not fully connected Incorrect audio source selection Volume too low on source device Damaged cable	Ensure cable plugs are fully inserted into headphones and source. Verify the correct audio output is selected on your device. Increase volume on your audio source. Try a different audio cable if available.
Distorted sound	Volume too high Poor quality audio file Incompatible audio source	Reduce volume on your audio source. Try playing a different, high-quality audio file. Ensure your audio source is compatible and providing a clean signal.
Sound only from one side	Cable not fully connected on one side Damaged cable or headphone jack Audio balance setting on source	Check and re-insert both cable plugs firmly. Try a different audio cable. Test with another device to rule out source issue. Check your device's audio settings for balance control.

If the problem persists after trying these solutions, please contact HIFIMAN customer support for further assistance.

Specifications

Detailed technical specifications for the HIFIMAN SUNDARA headphones:

Model Name: SUNDARA
Frequency Response: 6Hz - 75kHz
Impedance: 37 ohms
Sensitivity: 94dB
Weight: 372g (13.1 ounces)
Connectivity Technology: Wired
Headphones Jack: 3.5 mm Jack
Cable Feature: Detachable
Material: Metal (headband)
Color: Black
Ear Placement: Over Ear
Form Factor: Over Ear
Product Dimensions: 11 x 6.8 x 12.1 inches

Close-up of HIFIMAN SUNDARA diaphragm technology

Figure 5: Illustration of the NEO "supernano" Diaphragm (NsD) technology, which is 80% thinner than previous designs for enhanced detail and response.

Warranty and Support

HIFIMAN products are designed for durability and performance. For information regarding warranty coverage and terms, please refer to the official HIFIMAN website or the warranty card included with your purchase.

For technical support, service, or inquiries about replacement parts, please contact HIFIMAN customer service:

Official User Guide (PDF): Download PDF
HIFIMAN Official Store: Visit Store on Amazon
For direct contact information, please visit the "Contact Us" section on the official HIFIMAN website.

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HIFIMAN SUNDARA

HIFIMAN SUNDARA Over-Ear Headphones User Manual