Hugh Hetherington Hearing Aid Museum
Hugh Hetherington Hearing Aid Museum

The Hearing Aid Museum

Hearing Aids of all types—Ear Trumpets, Carbon Hearing Aids, Vacuum Tube Hearing Aids, Transistor Hearing Aids, Body Hearing Aids, Eyeglass Hearing Aids and much more!

Home Enter the Museum About Us Contact Us

FREE Subscription to:
Hearing Loss Help
The premier e-zine for people with hearing loss

Your email address
will never be
rented, traded or sold!

Your First Name:
Your E-mail:
Search this site:

 Results per

 all words
 any words

Click on the "General Information" button (top button above) for an overview and general information on this category of hearing aid.


Body Type Transistor Hearing Aids

Maico Model S-1 (Ultra Power) Transistor (Body) Hearing Aid

The Maico Model S-1, known as the "Ultra-Power", was manufactured by Maico Electronics, Inc. of Minneapolis, MN in 1958.  The name "Maico" was derived from the initials of the Medical Acoustic Instrument Company.

The S-1 was a sub-model of the earlier Model S which appeared in 1955. Both of these hearing aids used 5 transistors, however, the Model S-1 had a push-pull output arrangement.

 The S-1 was rather large for its type and measured 3⅝” by 2˝” by 1”. It weighed 5 oz with battery.

Click picture for larger view


Back Next

The microphone was located on the top (behind the grill—center). The volume control was on the top right corner. The receiver cord plugged  into the jack on the top left. The normal – high tone control switch was located on the right hand side of the case.

Although this unit does not have a telecoil, it was an optional extra and the switch would have been on the top right (black oval on the left in picture).

Click picture for larger view

The Maico Model S-1 from the back with the battery compartment door opened.


Click picture for larger view

The Maico Model S-1 used a 1.5 volt zinc AA-sized battery.



Click picture for larger view


(If a larger picture doesn't appear, you may have to turn your pop-up blocker off)