[Code of Federal Regulations]
[Title 21, Volume 8]
[Revised as of April 1, 2008]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR874.3330]

[Page 367]
 
                        TITLE 21--FOOD AND DRUGS
 
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN 
                          SERVICES (CONTINUED)
 
PART 874_EAR, NOSE, AND THROAT DEVICES--Table of Contents
 
                      Subpart D_Prosthetic Devices
 
Sec. 874.3330  Master hearing aid.

    (a) Identification. A master hearing aid is an electronic device 
intended to simulate a hearing aid during audiometric testing. It has 
adjustable acoustic output levels, such as those for gain, output, and 
frequency response. The device is used to select and adjust a person's 
wearable hearing aid.
    (b) Classification. Class II.