Sony MDR-AS400EX Operating Instructions

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Sony MDR-AS400EX Specification

The Sony MDR-AS400EX is a set of in-ear sports headphones designed to offer a secure fit and high-quality audio performance for active users. These headphones feature an adjustable loop hanger mechanism that ensures a stable and comfortable fit during physical activities. The MDR-AS400EX is equipped with 9mm dome-type drivers that deliver clear and dynamic sound, with a frequency response range of 5Hz to 24kHz, providing a rich audio experience across a broad spectrum.

The headphones have a sensitivity of 103 dB/mW and an impedance of 16 ohms, making them efficient and suitable for use with a variety of portable devices. They feature a Y-type cord with a length of 1.2 meters, offering flexibility and ease of movement without tangling. Constructed with water-resistant materials, the MDR-AS400EX is designed to withstand sweat and light rain, making them ideal for outdoor use and workouts.

The package includes four sizes of hybrid silicone earbuds, ensuring a personalized and comfortable fit for different ear sizes. Additionally, the headphones come with a carry pouch for convenient storage and transport. The Sony MDR-AS400EX does not include an in-line microphone or remote, focusing instead on delivering pure musical enjoyment. With its blend of durability, secure fit, and superior sound quality, the Sony MDR-AS400EX is tailored for sports enthusiasts who seek reliable and immersive audio during their active routines.

Sony MDR-AS400EX F.A.Q.

How do I properly clean and maintain my Sony MDR-AS400EX earbuds?

To clean your Sony MDR-AS400EX earbuds, gently wipe the exterior with a soft, dry cloth. Avoid using alcohol or cleaning solvents. For the earbud tips, remove them and wash with mild soap and water, then let them dry completely before reattaching. Ensure the mesh is free of debris by lightly brushing it with a soft toothbrush.

What should I do if the sound is only coming from one earbud?

First, check the connection to your device to ensure it is secure. If the problem persists, try the earbuds with another device. Inspect the cable for any damage and ensure the earbud tip is clear of debris. If the issue remains, consider contacting Sony support for further assistance.

How can I ensure a comfortable fit with the Sony MDR-AS400EX?

The Sony MDR-AS400EX comes with multiple sizes of earbud tips. Try different sizes to find the most comfortable fit for your ears. Additionally, the adjustable ear loops can be customized to fit snugly around your ears to prevent slippage during use.

Can I use the Sony MDR-AS400EX for workouts and running?

Yes, the Sony MDR-AS400EX is designed for active use. The secure-fitting ear loops help keep the earbuds in place during physical activities, making them suitable for workouts and running.

What should I do if my earbuds are not producing any sound?

Ensure that the earbuds are properly connected to your audio device and that the device is not on mute. Check the volume settings on both the earbuds and the device. If using a smartphone, try restarting it. If the problem persists, try using the earbuds with another device to isolate the issue.

How do I replace the earbud tips on the Sony MDR-AS400EX?

To replace the earbud tips, gently pull the existing tip off the earbud. Align a new tip with the earbud nozzle and push it on until it fits snugly. Ensure the replacement tips are the correct size for a comfortable and secure fit.

What is the best way to store the Sony MDR-AS400EX when not in use?

Store the earbuds in a clean, dry place. Use the carry pouch provided with your earbuds to protect them from dust and potential damage. Avoid wrapping the cable tightly to prevent strain and tangling.

How do I resolve issues with tangled cables?

To prevent tangling, loosely coil the cable and secure it with a twist tie or cable organizer. When untangling, gently work through knots by loosening them with your fingers instead of pulling on the cable.

Are the Sony MDR-AS400EX compatible with all devices?

The Sony MDR-AS400EX earbuds are compatible with any device that has a standard 3.5mm headphone jack. For devices without a headphone jack, a compatible adapter will be required.

What should I do if the earbuds fall out during use?

Ensure that you are using the correct size earbud tips for a snug fit. Adjust the ear loops to hold the earbuds securely in place. If necessary, try using ear hooks or additional accessories designed to improve fit during active use.