Experience 3D Hearing with HiRes Fidelity 120

Designed to provide hearing that closely resembles how a normal ear hears, AB’s HiRes Fidelity 120™* sound processing captures and delivers the full dimension of sound for a more complete hearing experience.

Only HiRes Fidelity 120 offers five times more sound resolution than any other cochlear implant system – 120 spectral bands – to help you or your child hear all the colorful details of sound: birds chirping, rain falling, the various layers of music. And with HiRes Fidelity 120, your child has the opportunity to hear all the details necessary to understand speech and develop strong language skills.


*Not approved for pediatric patients in the United States.

HiRes™ Optima Sound Processing*: Great Performance, Longer Battery Life

This new sound processing strategy is designed to optimize battery life while delivering the same great performance of HiRes Fidelity 120 with AB’s unique current steering technology.


*Not approved for pediatric patients in the United States.

“The best way to describe the clarity of HiRes vs. Fidelity 120 is comparing it to watching a conventional TV versus a new high-definition TV. I can understand and easily follow the conventional TV, but the high-definition adds elements of detail and sharpness that make it even more rich, lively, and enjoyable. A particularly exciting experience was when I attended a concert and listened to the music using the Harmony BTE with HiRes Fidelity 120. I was amazed at how much better I was able to distinguish between different instruments playing at the same time, along with the vocalists. It was immediately apparent that I was hearing so much more detail with Fidelity 120.”

— Kristin Pagliuci, implanted age 30

The Significance of Spectral Resolution

Just the way a high-definition television delivers a higher-quality visual picture, HiRes Fidelity 120 is designed to deliver a higher-quality sound representation. The higher the spectral resolution, the better a recipient can hear a frequency or “pitch.” High spectral resolution is particularly important for listening in noisy environments as well as hearing and appreciating music. AB’s HiRes Fidelity 120 delivers the highest spectral resolution – 120 spectral bands for five times more than other brands – to help you hear every word of your important meeting or every note of your favorite song.

What is Spectral Resolution?

Spectral resolution refers to how well the cochlear implant delivers frequency, or “pitch” information, to the inner ear through a proper sound intensity. Typically, cochlear implant recipients hear different pitches when different electrodes are stimulated and when the rate of the stimulation varies. The better the spectral resolution, the better you can hear these pitches for better hearing in noise and music enjoyment. Improved spectral resolution is designed to more closely resemble normal hearing.

Simultaneous Stimulation is the Secret

Other implants use a single current source to stimulate only one electrode at a time, limiting the number of potential spectral bands. Only AB’s HiRes Fidelity 120 has multiple current sources, enabling two or more electrodes to be stimulated at the same time. This simultaneous stimulation allows current to be “steered” between electrodes, resulting in 120 spectral bands of sounds, giving you or your child the opportunity to hear more pitches. Recipients using research software have demonstrated the ability to perceive up to 450 pitches.1

Hear Your Best while Listening to Music

This important study proves that Harmony recipients have the opportunity to hear and enjoy music better than ever before.2,3 HiRes Fidelity 120* sound processing is the only strategy that can implement simultaneous current steering to deliver the dimensions of music (loudness, pitch, timing) for a full musical experience. AutoSound’s programmable wide Input Dynamic Range (IDR) and automatic volume control adjust automatically so that you don’t miss a note. And the naturally placed T-Mic microphone makes it effortless to use your MP3 player. This advanced technology only from AB works in concert so that you can hear your best.


*Not approved for pediatric patients in the United States. 

Enjoy Music More with AB

“Current steering (HiRes Fidelity 120*)...represents arguably the most exciting development in sound processing strategies since the introduction of the multichannel implant...the ability to perceive music is being increasingly viewed as a pinnacle of achievement that may be possible through cochlear implants.”

— Charles J. Limb, MD; Associate Professor, Department of Otolaryngology, Johns Hopkins Hospital; from Current Opinion in Otolaryngology – Head and Neck Surgery, 14:337-340, 2006.4

*Not approved for pediatric patients in the United States. 

Hear Your Best with HiRes Fidelity 120


Studies have shown that compared to using other sound processing strategies, AB recipients using HiRes Fidelity 120* hear speech better in noise and experience improvements in music and sound quality.5-7

*Not approved for pediatric patients in the United States. 

HiRes Fidelity 120 Compatibility

AB’s HiRes Fidelity 120* strategy is compatible with Naída CI,  Neptune, Harmony and PSP sound processors.

*Not approved for pediatric patients in the United States. 

Благодарим вас за то, что обратились к нам за помощью в подборе решения для обретения возможности слышать. Вы можете рассчитывать на нас — сообщество медицинских специалистов в области слуха и пользователей кохлеарных имплантов — и мы поможем вам слышать и быть услышанными (Hear and Be Heard™). Представитель компании Advanced Bionics скоро свяжется с вами.

Если ваш запрос требует немедленного рассмотрения, или же у вас имеются дополнительные вопросы, напишите нам по , адресу hear@AdvancedBionics.com.

We're here to help

The Bionic Ear Association (BEA) is comprised of caring professionals and a dedicated team of volunteers who provide you and your loved ones with information, education, and support for choosing, getting, and living with cochlear implants.

AB takes your privacy seriously. We will never sell or transfer your personal information to other companies for marketing purposes.

Toll Free Phone:  +1.866.844.HEAR (4327) US and Canada



Firszt JB, Koch DB, Downing M, Litvak L. (2007) Current steering creates additional pitch percepts in adult cochlear implant recipients. Otology and Neurotology, 28(5):629-636.


Mirza S, Douglas SA, Lindsey P, Hildreth T, Hawthorne M. 2003. Appreciation of Music in Adult Patients with Cochlear Implants. Cochlear Implants International. 4(2): 85-95.


Limb C. 2006. Cochlear Implant-Mediated Perception of Music. Current Opinion in Otolaryngology & Head and Neck Surgery. 14:337–340.


Firszt JB, Holden L, Reeder R, Skinner MW. 2009. Spectral Channels and Speech Recognition in Cochlear Implant Recipients using HiRes 120 Sound Processing. Otology and Neurotology 30:146-152.


Brendel M, Buchner A, Kruger B, Frohne-Buchner C, Lenarz T. 2008. Evaluation of the Harmony Sound Processor in Combination with the Speech Coding Strategy HiRes 120. Otol Neurotology 29:199-202.


Oleson J, Lesh S, Gfeller K, Knutson J. The Effect of Advanced Bionics’ HiRes 120 on Self-Report of Music Enjoyment. Poster Presentation at the 10th International Conference on Cochlear Implants and Other Implantable Auditory Technologies, April 10-12, 2008, San Diego, CA.

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Contact Advanced Bionics

AB takes your privacy seriously. We will never sell or transfer your personal information to other companies for marketing purposes.

Customer Service

Toll Free Phone: (877) 829-0026 US and Canada
TTY: (800) 678-3575

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