A black handset-shaped telephone amplifier with a speaker grille on top, indicator lights, and a mute button below.

Serene Innovations HearAll SA-40 Cellular Telephone Amplifiers

by Serene Innovations

$139.95, see price history

Price is what the vendor listed when last checked. Confirm it with the vendor before buying.

Setup with instructions This is a complete device, but it needs Bluetooth pairing with your phone. Tone and t-coil settings also take some trial and error. A family member with the instructions can usually handle all of it in about half an hour, so it fits guided setup and doesn't need a professional.

What it is

Summary

AI-generated from vendor-published content · October 1, 2026

The HearAll SA-40 is a wireless handset that pairs with a Bluetooth cell phone and makes calls much louder, with up to 40dB of amplification. You get a tone control to match the sound to your hearing, and a padded speaker that helps block outside noise. A t-coil mode sends the sound straight to a t-coil hearing aid, and a speakerphone mode with a clip and a magnetic car visor mount covers hands-free calling. It's a good fit for someone who struggles to follow phone conversations, with or without hearing aids. Pairing range is about 30 feet from the phone, and the rechargeable battery gives up to 10 hours of talk time.

Getting it

Try before you buy

Devices like this are often available to borrow through your state's AT Act program — typically free or low-cost — so you can try it before buying or pursuing funding.

Find your state's lending program →

Where to get it

Diglo Visit
$139.95

This is the vendor WhatCanHelp tracks for this product — it may also be available from other retailers or a local supplier, and prices vary.

How to fund this

These are common places to ask about paying for equipment like this. Each one decides its own eligibility and what it covers, so start by asking them.

All funding programs, state by state →

Details

Quick Facts Catalog facts · auto-generated
Type
Addresses
Platform
Age range
Complexity
Setup with instructions
Price
$139.95
Funding
  • AT Act lending
  • Out of pocket
  • Vocational rehab

What setup looks like

  • Out of the box
    1. Charge the built-in battery before first use.
    2. Pair the handset with your cell phone over Bluetooth, then place or answer a call through the handset.
  • With a guide
    1. Follow the pairing instructions to connect the handset to your phone, which usually takes about 10 minutes.
    2. Try the volume and tone control while on a call to find the setting that sounds clearest to you.
    3. If you wear a t-coil hearing aid, switch on t-coil mode and check that the sound reaches your aid. Set up the clip or visor mount if you want hands-free use.

Sources & fine print

Vendor facts (name, price, platforms, vendor link) sourced from Diglo — view on vendor site (opens in a new tab); last checked October 31, 2026.

Classification & description AI-generated from vendor-published content on October 1, 2026 · confidence: high. Vendor specs may lag; verify before relying on details in a clinical or funding artifact.

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