The HIFIMAN Sundara Closed-back Planar Headphones are designed to deliver high-fidelity audio with a focus on detail, clarity, and an expansive soundstage, even within a closed-back design. These headphones incorporate several advanced technologies to achieve their performance goals, including Acoustically Invisible Stealth Magnets, a NEO Supernano Diaphragm, and a specialized closed-back acoustic structure.
Function Description:
The Sundara Closed-back headphones are designed for audiophiles and music enthusiasts seeking a high-quality listening experience with the added benefit of passive noise isolation provided by their closed-back design. They are intended for use with a wide range of audio devices, from dedicated headphone amplifiers to portable players, thanks to their mainstream cable connections. The planar magnetic driver technology aims to provide a fast, detailed, and low-distortion sound reproduction, characteristic of HIFIMAN's offerings. The closed-back design is specifically engineered to offer a large soundstage, typically associated with open-back headphones, while maintaining the isolation benefits of a closed system.
Important Technical Specifications:
- Frequency Response Range: 6-50KHz, indicating a very wide range capable of reproducing both very deep bass and extended treble frequencies.
- Impedance: 20Ω (Ohms), suggesting that these headphones are relatively easy to drive and can be powered by a variety of sources, though a dedicated amplifier may still enhance performance.
- Sensitivity: 98dB, which is a moderate sensitivity level, further supporting their compatibility with different audio devices.
- Weight: 432g, placing them in the mid-to-heavy range for headphones, which is typical for planar magnetic designs due to the magnet arrays.
Usage Features:
- Acoustically Invisible Stealth Magnets: This advanced magnet design is acoustically transparent, significantly reducing wave diffraction turbulence that can degrade sound wave integrity. This results in reduced distortion and a purer, more harmonious sound compared to conventional planar magnetic designs where magnets can interfere with sound waves.
- NEO Supernano Diaphragm: HIFIMAN has developed a nano-scale thickness diaphragm that enables lightning-fast response. This technology contributes to stunning levels of detail and ultra-low distortion, allowing the Sundara Closed-back to offer performance and musical purity that exceed expectations for its price point.
- Specialized Closed-back Design: The acoustic structure is specifically engineered for a closed-back system to deliver a "huge soundstage," a characteristic often found in open-back planar headphones. This design aims to combine the immersive sound experience with the benefits of sound isolation.
- Natural Beauty of Elegant Beechwood Ear Cups: The headphones feature hand-assembled wood grain ear cups made from beechwood. These not only contribute to the aesthetic appeal but also offer sonic benefits, enhancing the overall audio performance.
- Classic Ergonomic Headband: The lightweight headband is designed for maximum comfort during extended listening sessions. It features a black matte appearance, contributing to a stylish and modern look. The headband includes two adjustment blocks for precise positioning of the strap, ensuring an optimal fit for various head sizes.
- Mainstream Cable Connections: The Sundara Closed-back comes with a detachable dual-sided 3.5mm cable, allowing for easy replacement or upgrade. A 6.35mm adapter is also included, ensuring compatibility with a wide range of audio devices, from portable players to home audio systems. The dual-sided connection ensures balanced signal transmission to each ear cup.
- Break-in Period: The headphones benefit from a break-in period of up to 150 hours to achieve optimum performance. During this time, users are encouraged to simply enjoy their headphones.
Maintenance Features:
- Cleaning: The surfaces of the ear pads and ear cups can be wiped with a microfiber cloth. The headband should be periodically wiped with a clean, dry cloth to prolong its life.
- Storage: It is recommended to store the headphones in a dry, cool, and safe place, away from dust, heat, humidity, sunlight, and out of reach of children and pets.
- Environmental Precautions: Avoid exposing the headphones to extreme heat or cold.
- Cleaning Agents: Do not use volatile substances such as alcohol, acetone, gasoline, or dish detergent to clean the headphones, as these can damage the materials.
- Ear Pad Replacement: Ear pads are designed to be replaceable. To remove them, locate the clips on the inside of the pad, gently bend them, and slip them out. To install new pads, align them with the mounting ring and gently bend the clips into their appropriate locations.
- Warranty: HIFIMAN offers a one-year warranty from the original date of purchase. This can be extended by an additional six months if the user joins HIFIMAN on Facebook. The warranty covers malfunctions and defects, but it is voided by disassembly, modification, misuse, accidental damage, or use of the product outside its normal intended purpose. Proof of purchase (dated sales or delivery receipt) is required for warranty service.
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