Manufacturer Information: Cochlear Implants and Hearing Aids | UCSF EARS
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Manufacturer information: cochlear implants and hearing aids

A directory of official documents + a question guide.

Clinician-edited Learn more
12 min read Updated 2026-02-01

What this page is (and isn’t)

This page is a starting point for product questions: a directory of selected manufacturer-published materials such as user manuals, instructions for use (IFUs), and document/support libraries 3611.

It is not a product comparison, shopping guide, or a substitute for clinical guidance. For help choosing, fitting, or understanding what a manual/IFU means for you, talk with your audiologist or implant team 1.

We support your choice (including OTC options) and focus on helping you find reliable sources to verify details 1.

How we verify: We cite manufacturer document portals/IFUs and U.S. regulatory sources (FDA and eCFR). Features and compatibility can change—check the most current manufacturer documentation for your exact model/version 12.

Don’t wait if you have concerning symptoms

OTC hearing aid labeling includes conditions where you should seek medical evaluation (for example: sudden or rapidly worsening hearing loss, dizziness, recent ear drainage, one-sided sudden hearing change, ear pain/discomfort) 2.

Use the UCSF EARS safety guide for next steps: /en/emergency

Quick start: choose what you need

Most visitors come here at one of these moments. Pick yours and jump to the most useful section.

I’m considering a device

Use questions (not marketing claims) and verify details in manuals/IFUs.

I just got a device

First-week checklist: comfort, care, charging, pairing, expectations, follow-up.

My device isn’t working

90-second checks → common fixes → when to stop and call support or your clinic.

Step 1: Identify your exact model (this saves a lot of time)

Many manuals, accessories, and app instructions are model- and version-specific. Before you compare devices or call support, try to find:

  • Manufacturer + model name (example: “SONNET 2”, “Naída CI M90”, “Intent”, “Moxi V-R”).
  • Style/configuration (BTE/RIC/ITE; receiver/earmold type; left vs right).
  • Serial number (often on the device, packaging, user manual, or clinic paperwork).
  • Phone model + operating system (for app and Bluetooth troubleshooting).

Have this ready before you call support

  • Device model + serial number (or a photo of the label/packaging)
  • Your phone model and whether you use iOS or Android
  • What changed (and when), and what you already tried
  • Any accessories involved (TV streamer, remote mic, charger, etc.)

If you’re considering a new device

This page is designed to help you compare questions and facts rather than advertisements. Start with your listening goals, then verify details in manuals/IFUs and support libraries.

For cochlear implants

  • Am I a candidate, and what testing is needed (hearing tests, imaging, medical evaluation)?
  • What is the expected rehab pathway (mapping schedule, listening practice, follow-up visits)?
  • What accessories matter for my daily life (work calls, meetings, TV, outdoor use, water)?
  • What restrictions or safety warnings apply (MRI details, magnets, impact sports, infection precautions)?
  • What does the manufacturer say about upgrades, warranties, and replacement parts?

For prescription hearing aids

  • Do I have a trial period and what counts as a return vs exchange?
  • Will my fitting include verification (often called “real-ear” measures) and follow-up tuning?
  • What do the manuals say about cleaning, wax protection, moisture, and storage?
  • What accessories fit my goals (remote mic, TV device, tinnitus programs, telecoil if needed)?
  • What phone/app compatibility do I need to verify for my exact model?

For OTC hearing aids

OTC hearing aids are a category intended for adults with perceived mild to moderate hearing loss 1. Jump to the regulatory section here: OTC framing + what to compare.

If you’ve purchased a device (first-week checklist)

A lot of early frustration is fixable. The goal in week one is: comfort, consistent wear time, and a stable baseline before you judge benefit.

First-week checklist (tap to open)
  1. Comfort first: No sharp pain. Mild “new pressure” can be normal; pain is not. If it hurts, stop and contact your clinician or manufacturer support.
  2. Wear time plan: Start with easier environments and build up (your brain adapts).
  3. Charging/batteries: Learn one reliable routine (nightly charging or a battery-change plan).
  4. Cleaning + wax protection: Learn how to clean microphones/earpieces and how wax filters/guards work.
  5. Pairing + app basics: Pair once, confirm streaming/calls, and write down which app you use.
  6. Follow-up: Know your next appointment date and what to report (comfort, clarity, noise, phone use).

Helpful UCSF EARS next steps

If your device isn’t working

Start with quick checks that are safe and commonly effective. If you have sudden hearing change, severe dizziness, drainage, or significant pain, use: /en/emergency 2.

90-second troubleshooting flow (tap to open)
  1. Power: Confirm it’s on and charged (or battery is fresh). Try a full restart.
  2. Ear piece / wax: For hearing aids, wax guards/filters are a very common cause of “no sound” or muffled sound. If you have a known replacement filter, follow your manual.
  3. Microphone ports: Check for debris/moisture. Avoid sharp tools. Use the cleaning method in your manual.
  4. Program/volume: Ensure it’s not in a mute program. If you use an app, confirm settings didn’t change.
  5. Phone/Bluetooth: If the issue is streaming/calls: toggle Bluetooth off/on, close/reopen the app, and confirm the device is still paired.
  6. Stop point: If the device still isn’t working after these checks, call your audiologist/implant team or the manufacturer support line below. Some problems require professional service or programming.

What manufacturer support is best for

  • Finding the correct manual/IFU for your exact model
  • App setup, pairing, streaming, and accessory compatibility
  • Replacement parts, warranty questions, and repair pathways

Note: Many prescription hearing aids and some implant-related issues still require your clinician for adjustments (programming/mapping) or in-clinic service.

How to use this page

Use this directory to find manufacturer-published documents when you’re researching products or accessories, or reviewing manufacturer troubleshooting guidance 3.

  • IFUs and user manuals (device use, troubleshooting, and safety statements) 4717.
  • Support/document libraries (pages that host manufacturer-published PDFs and support materials) 3910.
  • Downloads hubs and catalogs/spec sheets when a manufacturer provides them through its pages 35.

Bring to your appointment: question checklist

  • Which options fit my listening goals and anatomy/medical needs?
  • What are realistic benefits and limitations for my situation?
  • What accessories or assistive listening options should I consider?
  • What training/follow-up is included?
  • What should I verify in the IFU/manual?

Manufacturer support: phone numbers + official manuals

Phone numbers below are included to help you reach manufacturer support for manuals, accessories, pairing/app issues, warranty questions, and repair pathways. Hours and options can change—use the linked support pages if you need the latest information.

Cochlear implants

Below are examples of manufacturer document entry points for cochlear implant systems and sound processors (user guides, technical specs, and related materials) 345.

Advanced Bionics

User guide PDF
Naída™ CI M90 Sound Processor — User Guide (PDF) 4

Documents & support

Phone support

What these documents typically include

This user guide is a manufacturer source for device use, troubleshooting, and safety information for the Naída™ CI M90 Sound Processor 4.

Last verified: 2026-02-01 4 21

MED-EL

Downloads hub
SONNET 2 — Downloads (Quick Guide, catalogs, rehab guides) 5

Documents & support

Phone support

What these documents typically include

This downloads hub is an entry point for SONNET 2 materials, including a Quick Guide and related documents 5.

Last verified: 2026-02-01 5 22

Prescription hearing aids

These links point to manufacturer portals and example manufacturer PDFs for prescription hearing aids 61011.

OTC hearing aids

The sources below link to OTC user manuals and support pages on manufacturer sites 15161718.

OTC hearing aids: regulatory framing and what to compare

FDA guidance describes OTC hearing aids as a category intended for adults with perceived mild to moderate hearing loss 1.

“An air-conduction hearing aid intended to compensate for perceived mild to moderate hearing impairment in individuals 18 years of age or older.” 2

Key federal controls (plain-language)

  • Maximum output limit: 111 dB SPL (or 117 dB SPL when certain compression is used). 2
  • Maximum processing delay (latency): 15 milliseconds. 2
  • Requirements intended to reduce risk of placing the device too close to the eardrum (a “clearance” requirement). 2

Medical-evaluation warning signs (from required labeling)

OTC hearing aid labeling includes conditions that trigger a recommendation to seek medical evaluation, including: visible ear deformity; recent ear drainage; sudden or rapidly worsening hearing loss; acute/chronic dizziness; sudden/recent one-sided hearing loss; air–bone gap ≥15 dB at 500/1000/2000 Hz; ear canal blockage (wax/foreign body); ear pain/discomfort 2.

When to consider involving an audiologist

If you want help understanding your options, verifying fit and safe use, or interpreting what a manual/IFU means for your situation, consider involving an audiologist (or your implant team if you have a cochlear implant) 1.

What to compare (questions, not claims)

  • What do the labeling and purchasing terms say about returns and warranty? 1
  • What comfort/fit options are available for my ear, and what should I do if fit is painful or unstable?
  • What setup support or training is offered, and how do I get help if I’m stuck?
  • What phone/app compatibility should I verify on the manufacturer’s support page for my device and phone?
  • What maintenance, batteries, or charging steps does the user manual describe?
Reference list (sources used on this page)

References below map each cited source to its title, publisher, type, URL, and accessed/verified date. This page is educational and does not replace individualized clinical guidance 1.

  1. FDA — OTC Hearing Aids: What You Should Know. Type: Regulatory explainer. URL: https://www.fda.gov/medical-devices/hearing-aids/otc-hearing-aids-what-you-should-know . Accessed/Verified: 2026-02-01.
  2. eCFR (U.S. Government Publishing Office) — 21 CFR 800.30 — Over-the-counter hearing aid controls. Type: Federal regulation. URL: https://www.ecfr.gov/current/title-21/chapter-I/subchapter-H/part-800/subpart-B/section-800.30 . Accessed/Verified: 2026-02-01.
  3. Cochlear — Nucleus® guides (user manuals, specs, catalogs). Type: Manufacturer document library. URL: https://www.cochlear.com/us/en/professionals/products-and-candidacy/product-guides-and-order-forms/nucleus . Accessed/Verified: 2026-02-01.
  4. Advanced Bionics — Naída™ CI M90 Sound Processor — User Guide (PDF). Type: User guide / IFU-style manual. URL: https://www.advancedbionics.com/content/dam/advancedbionics/documents/libraries/marvel-ci-product-support/com-en/Naida-CI-M90-Sound-Processor-User-Guide.pdf.coredownload.pdf . Accessed/Verified: 2026-02-01.
  5. MED-EL — SONNET 2 — Downloads (Quick Guide, catalogs, rehab guides). Type: Manufacturer downloads hub. URL: https://www.medel.com/support/product-support/audio-processors/sonnet2/downloads . Accessed/Verified: 2026-02-01.
  6. Phonak — User Guides. Type: Manufacturer user guide portal. URL: https://www.phonak.com/en-us/support/user-guides . Accessed/Verified: 2026-02-01.
  7. Oticon / Demant (download host) — Oticon Intent — Instructions for Use (PDF example). Type: IFU (PDF). URL: https://assets-ue.cas.dgs.com/-/media/oticon-us/main/download-center/intent/282761usoticon-intent-ifu-251.pdf . Accessed/Verified: 2026-02-01.
  8. ReSound / GN — ReSound user guide (example PDF – LiNX 3D BTE). Type: User guide PDF. URL: https://www.resound.com/-/media/resound/resound-us/downloads/user-guides/400618011us-ug-linx3d-bte.ashx . Accessed/Verified: 2026-02-01.
  9. GN Hearing — Support materials. Type: Manufacturer support portal. URL: https://www.gnhearing.com/en/products/support-materials . Accessed/Verified: 2026-02-01.
  10. Starkey — Hearing Aid Operation Manuals. Type: Manufacturer manuals portal. URL: https://www.starkey.com/support/operations-manuals . Accessed/Verified: 2026-02-01.
  11. Widex / WS Audiology — Document library (user instructions, datasheets, safety docs). Type: Manufacturer document library. URL: https://www.widex.com/en-us/support/document-library/ . Accessed/Verified: 2026-02-01.
  12. Signia / WS Audiology — Support for hearing aids. Type: Manufacturer support portal. URL: https://www.signia.net/en-us/support/ . Accessed/Verified: 2026-02-01.
  13. Signia Pro — Signia Pure 312 X — User guide (PDF sample). Type: User guide PDF. URL: https://www.signia-pro.com/-/media/signia/ca/fr-ca/ramq/user-guides/signia-pure-312-x---rev01---en-fr---screen.pdf . Accessed/Verified: 2026-02-01.
  14. Jabra Enhance / GN (CDN) — Jabra Enhance Plus — User Manual (PDF). Type: OTC user manual PDF. URL: https://cdn.jabraenhance.com/shared/userguides/jabra-enhance-plus-user-guide-0524.pdf . Accessed/Verified: 2026-02-01.
  15. Sony — Sony CRE-E10 — Manuals & support. Type: OTC support/manuals portal. URL: https://www.sony.com/electronics/support/other-products-otc-hearing-aids/cre-e10/manuals . Accessed/Verified: 2026-02-01.
  16. Lexie Hearing — Lexie Lumen — User Manual (PDF). Type: OTC user manual PDF. URL: https://lexiehearing.com/documents/Lexie_Lumen_User_Manual.pdf . Accessed/Verified: 2026-02-01.
  17. Eargo — Eargo Plus — User Guide (PDF). Type: OTC user guide PDF. URL: https://www.eargo.com/content/dam/eargo/pdf/Eargo-Plus-User-Guide.pdf . Accessed/Verified: 2026-02-01.
  18. Cochlear — Contact us. Type: Manufacturer contact page (phone). URL: https://www.cochlear.com/us/en/home/contact-us . Accessed/Verified: 2026-02-01.
  19. Cochlear — Support portal (device support). Type: Manufacturer support page (phone). URL: https://support.cochlear.com/us/en/home . Accessed/Verified: 2026-02-01.
  20. Advanced Bionics — Contact us. Type: Manufacturer contact page (phone). URL: https://www.advancedbionics.com/us/en/home/contact-us.html . Accessed/Verified: 2026-02-01.
  21. MED-EL — MED-EL USA contact. Type: Manufacturer contact listing (phone). URL: https://www.medel.com/contact-us/med-el-usa . Accessed/Verified: 2026-02-01.
  22. Phonak — Contact / support for hearing aid wearers. Type: Manufacturer support info (phone). URL: https://www.phonak.com/en-us/contact . Accessed/Verified: 2026-02-01.
  23. Oticon — Patient Support Hotline. Type: Manufacturer support info (phone). URL: https://www.oticon.com/veterans/patient-support . Accessed/Verified: 2026-02-01.
  24. ReSound — Contact us. Type: Manufacturer contact page (phone). URL: https://www.resound.com/en-us/contact . Accessed/Verified: 2026-02-01.
  25. Starkey — Get help / technical support. Type: Manufacturer support page (phone). URL: https://www.starkey.com/support/get-help . Accessed/Verified: 2026-02-01.
  26. Widex — Service & support. Type: Manufacturer support page (phone). URL: https://www.widex.com/en-us/support/ . Accessed/Verified: 2026-02-01.
  27. Unitron — Contact us. Type: Manufacturer contact page (phone). URL: https://www.unitron.com/en-us/contact-us . Accessed/Verified: 2026-02-01.
  28. Signia — Support (Bluetooth consumer hotline). Type: Manufacturer support page (phone + hours). URL: https://www.signia.net/en-us/support/ . Accessed/Verified: 2026-02-01.
  29. Jabra Enhance — Customer support. Type: Manufacturer support info (phone). URL: https://www.jabraenhance.com/contact . Accessed/Verified: 2026-02-01.
  30. Sony — Customer support phone. Type: Manufacturer help/guide (phone). URL: https://helpguide.sony.net/ . Accessed/Verified: 2026-02-01.
  31. Lexie Hearing — Contact us. Type: Manufacturer contact page (phone). URL: https://lexiehearing.com/pages/contact-us . Accessed/Verified: 2026-02-01.
  32. Eargo — Contact / customer support. Type: Manufacturer contact page (phone). URL: https://www.eargo.com/pages/contact-us . Accessed/Verified: 2026-02-01.
If you’d like to read more (not cited above)

No additional sources are listed here because every source used on this page is already included in the reference list above.