ReSound Magna 490 SP BTE: 5 Essential Specs for Profound Loss – Overview

The ReSound Magna 490 SP (Super Power) BTE is a dedicated hearing solution specifically engineered for individuals with severe-to-profound hearing impairment. While the hearing aid market often trends toward miniaturization, the Magna series prioritizes raw power, tactile reliability, and long-term durability. For those who require maximum amplification to navigate their daily lives, the Magna 490 SP stands as a robust pillar of technology. This comprehensive guide explores why this high-output device remains a vital tool for the hearing-impaired community.

1. Unmatched 81dB Gain for Maximum Audibility

The primary requirement for any “Super Power” hearing aid is the ability to provide immense volume without sacrificing clarity. The ReSound Magna 490 SP excels here, offering a massive 81 dB of gain and a maximum power output of 144 dB SPL. Consequently, it can reach sound levels that standard, smaller hearing aids simply cannot achieve. This high-output capability is absolutely essential for users with a narrow “dynamic range.” By providing this intense level of amplification, the Magna 490 ensures that even the softest speech sounds become audible. Furthermore, it manages these high volumes with sophisticated digital processing to prevent the distortion that often occurs in high-gain devices.

2. Long-Lasting 675 Battery Power

High-gain amplification requires a significant and steady flow of energy. Therefore, the Magna 490 SP utilizes a Size 675 Zinc-Air battery. This is the largest and most powerful disposable battery available in the hearing aid industry. As a result, users benefit from an exceptionally long battery life, which typically lasts between 12 to 18 days. This longevity is vital for power users who cannot afford for their devices to fail during important conversations. Additionally, the physical size of the 675 battery makes it much easier to handle for individuals with limited dexterity or vision compared to smaller button cells.

3. Sophisticated Feedback and Noise Management

One of the most common challenges with high-power hearing aids is “feedback” or whistling. Because the microphones are so close to the powerful receiver, sound can leak out and cause a squeal. However, ReSound has integrated its advanced DFS (Digital Feedback Suppression) technology into the Magna 490. This system identifies the frequency of the whistle and cancels it instantly. Therefore, you can wear hats, use a telephone, or hug loved ones without the embarrassment of sudden whistling. Moreover, the device includes Noise Tracker technology, which works to suppress background noise. This allows the user to focus more easily on speech, even in challenging environments.

4. Tactile Controls and Telecoil Integration

Durability and ease of use are hallmarks of the Magna design. Unlike newer models that rely solely on smartphone apps, the ReSound Magna 490 SP BTE features a dedicated volume toggle and program button. This provides immediate, tactile control over your listening environment. If you enter a noisy area, you can turn the volume down with a single click. Most importantly, it includes a built-in Telecoil. Many public venues, such as theaters and airports, use loop systems. With the Telecoil, the Magna 490 SP picks up audio signals directly from the source. Consequently, you receive clear sound without the interference of background room noise.

5. Built for All-Day Durability

Reliability is essential for a medical device you wear every day. The ReSound Magna 490 SP BTE is built with a rugged, ergonomic casing designed to withstand the rigors of an active life. It features a protective coating that resists moisture, sweat, and dust. This is particularly important for high-power users, as moisture can often damage the internal components of powerful amplifiers. The BTE (Behind-the-Ear) design ensures that the weight is distributed comfortably, making it a reliable companion from morning until night.

Frequently Asked Questions (FAQ): ReSound Magna 490 SP BTE

Who should use the ReSound Magna 490 SP BTE?

This device is specifically designed for adults with severe-to-profound hearing loss. It is not recommended for mild or moderate hearing loss because the output levels are extremely high and tailored for those who need significant help.

Does the ReSound Magna 490 SP BTE support Bluetooth?

No, the Magna 490 is a “Legacy” model. It does not support direct Bluetooth streaming to smartphones like the newer ReSound Key or Nexia lines. However, it is highly compatible with FM systems and Telecoil loops.

How often do I need to replace the batteries?

Because it uses the high-capacity Size 675 battery, you will only need to change them approximately every two weeks. This makes it one of the most low-maintenance power aids on the market.

Is the ReSound Magna 490 SP BTE water-resistant?

The device is moisture-resistant and built to handle sweat and light rain. However, it is not waterproof. You must remove the hearing aids before swimming or showering to avoid damaging the circuitry.

Why is the ReSound Magna 490 SP BTE model better for me than a smaller aid?

If you have profound hearing loss, a smaller aid (like an IHC or RIC) often lacks the “gain” needed to make speech clear. The Magna 490 SP is built specifically to provide that missing volume without distorting the sound.

Can my audiologist still program this model?

Yes. Although it is an older generation, audiologists still have the software to program and fine-tune the Magna 490 to your specific audiogram.