Recent Audio Amplifier Articles
Audioholics Petition to Reopen FTC Final Amplifier Rule of 2024
Our petition urges the FTC to reconsider its August 2024 Amplifier Rule, which expands power output regulations to ALL audio products. The broad, retroactive scope and blanket approach risk industry disruption.
Switching Amplifiers: The Technology and the Issues
This article started because a good friend of mine dropped a Panasonic SA-XR50 switch-mode amplifier to me for some basic bench test. This article will NOT be a review of that unit, but an …
Switching Amplifier (Class D) Basics
Just today I read on an internet forum a post by a "hot" new manufacturer of class D amplifiers saying that "the only way to solve the interference problem is to put the amplifier in a completely …
The All Channels Driven Amplifier Test Controversy
There has been a lot of controversy on many of the Internet forums regarding power capability of receivers when driving multi-channel speaker systems. Some argue that when a receiver is rated at …
Damping Factor: Effects On System Response
Much ballyhoo surrounds the concept of "damping factor." It's been suggested that it accounts for the alleged "dramatic differences" in sound between tube and solid state amplifiers. The claim is …
The Truth About Digital (Class D) Amplifiers
Firstly I'd like to point out that "digital amps" is a misnomer. There are two categories: Analog-controlled class D. Switching amplifiers…
Audio Amplifier Classes
This is a brief article comparing the different classes of audio amplifiers. Class D vs Class AB and more types are discussed.