G/TBT/N/USA/1679/Add.2  
 
22 August 2023  
(23-5633) Page: 1/2 
Committee on Technical Barriers to Trade  Original: English  
 
NOTIFICATION  
Addendum  
The following communication , dated  22 August 2023, is being circulated at the request of the 
delegation of the United States of America . 
 
_______________  
 
 
Title:  Trade Regulation Rule Relating to Power Output Claims for Amplifiers Utilized in Home 
Entertainment Products  
 
Reason for Addendum:  
[ ] Comment period changed - date:   
[ ] Notified measure adopted - date:  
[ ] Notified measure published - date:  
[ ] Notified measure enters into force - date:  
[ ] Text of final measure available from1:  
[ ] Notified measure withdrawn or revoked - date:  
Relevant symbol if measure re -notified:   
[X] Content or scope of notified measure changed  and text available from1:  
Supplemental notice of proposed rulemaking published 21 August 2023; 88 Federal 
Register (FR) 56780:  
https://www.govinfo.gov/content/pkg/FR -2023-08-21/html/2023 -16792.htm  
https://www.govinfo.gov/content/pkg/FR -2023-08-21/pdf/2023 -16792.pdf  
https://members.wto.org/crnattachments/2023/TBT/USA/modification/23_11936_00_e
.pdf 
New deadline for comments (if applicable):  20 October 2023  
[ ] Interpretive guidance issued and text available from1:  
[ ] Other:  
 
Description:  The Federal Trade Commission ("FTC" or "Commission") seeks public comment on 
proposed amendments to the Trade Regulation Rule Relating to Power Output Claims for Amplifiers 
Utilized in Home Entertainment Products ("Amplifier Rule" or "Rule"). The proposed amendments 
modify the previous proposal by updating a required test condition (total harmonic distortion), 
improving differentiation between power output disclosures that comply with the Rule's testing 
methods and those that do not, and modernizing as well  as clarifying Rule language considering the 
 
1 This information can be provided by including a website address, a pdf attachment, or other 
information on where the text of the final /modified  measure and/or interpretive guidance can be obtained.  G/TBT/N/USA/1679/Add.2  
 
- 2 - 
 
  foregoing modifications. Additionally, the proposed amendments now formalize prior Commission 
guidance on applying the Rule to multichannel amplifiers.  
DATES: Written comments must be received on or before 20 Oc tober 2023. Parties interested in an 
opportunity to present views orally should submit a request to do so as explained below, and such 
requests must be received on or before 20 October 2023.  
16 Code of Federal Regulations (CFR) Part 432: https://www.ecfr.gov/current/title -16/chapter -
I/subchapter -D/part -432 
This supplemental notice of proposed rulemaking and the notice of proposed rulemaking notified as 
G/TBT/N/USA/1679/Add.1  are identified by Docket Number FTC -2022-0048. The Docket Folder is 
available from Regulations.gov at https://www.regulations.gov/docket/FTC -2022-0048/document  
and pr ovides access to primary documents as well as comments received. Documents are also 
accessible from Regulations.gov  by searching the Docket Number. WTO Members and their 
stakehol ders are asked to submit comments to the USA TBT Enquiry Point  by or before 4pm Eastern 
Time on 20 October 2023. Comments received by the USA TBT Enquiry Point from WTO Members 
and their stakeholders will be shared with the  regulator and will also be submitted to the Docket  on 
Regulations.gov if received within the comment period.  
__________