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What is THX AAA Technology In Audio & Video?

by Stuart Charles Black
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Greetings bass head and Welcome aboard. Stuart Charles here, HomeStudioBasics.com helping YOU make sound decisions leading to a beautiful audio experience that will make you fall in love with music (NOT gear), all over again, so…

What is THX AAA Technology In Audio and Video?

What is THX AAA?

THX AAA is a patented amplifier technology designed to deliver high-fidelity audio with low distortion and noise, enhancing the overall sound performance of headphones and audio equipment.

Think of it as a mark or stamp of approval, indicating that the piece of gear in question is certified to perform at a high level.

When audiophiles describe an Amp/DAC or headphone as likely sounding “exactly as the artist intended” they’re sort of indirectly referring to the concept of THX without realizing it.

THX is a standard as well as a certification for high-fidelity audio/visual reproduction for cinemas, theaters, screening rooms, home theaters, consumer-grade and professional speakers, car audio systems as well as many others. Contrary to popular belief, THX is not an audio/video or encoding format, but is a standard which ensures that the audio/video presentation is reproduced exactly as the original creator intended, so it has nothing to do with how the media was created but deals extensively with the equipment and environment used to present the media.Techopedia


THX was founded by George Lucas in 1983.

I’ve always seen the “THX” logo at the beginning of various films, but only recently became interested as I sat down to watch Return of the Jedi again.

Lucas wanted to ensure that the soundtrack for Jedi could be reproduced at the highest quality for screening venues, so he asked Tomlison Holman (with whom he was working) to develop a method that would achieve it.

THX is just that, a method of quality assurance, nothing more.

Quality assurance is defined as a method of preventing mistakes and defects in manufactured products and avoiding problems when delivering those products to consumers.

Nowadays, THX encompasses quite a lot more in terms of its reach: Movie theaters, screening rooms, home theaters, computer speakers, gaming consoles, car audio systems, video games, and even headphone amplifiers!

This is in part why I became so curious.

There are quite a number of amps that contain the THX stamp, and because I demo a lot of amps in general, naturally I became curious.

The “TH” represents Tomlinson Holman’s initials, followed by “X” for the eXperiment.

But what about the AAA part?


The Triple-A that you see on Amplifiers stands for Achromatic Audio Amplifier, with Achromatic simply meaning “without color.”

In other words, it’s meant to be as neutral as possible, at the loudest levels possible, without distortion.

To be clear, THX isn’t an audio company producing software or hardware.

It’s not a type of recording technology either.

It’s simply a business-to-business company that certifies amplifiers containing AAA technology.

Any Amp AAA certified must pass strict guidelines before it’s ready for consumption:

  • Evaluation and licensing
  • Design
  • Approval
  • Construction and renovation
  • Testing
  • Certification


Interestingly enough, the development of THX AAA stemmed from a desire to improve upon the shortcomings of Class A amplifiers; that is, their propensity to run extremely hot as well as requiring quite a bit of power to function.

The Chord Mojo is a perfect example of a Class A amp that stands out from the rest in terms of its superior sound and low distortion; something I’ve always harped on in articles and videos.

I truly believe it’s just about the best sound you’re going to get out of an Amp/DAC combo at its price point or otherwise, and it being Class A is a huge reason why.

THX also sought to improve Class B amplifiers; that is, their inability to replicate an entire waveform at once without splitting the signal and processing each part separately.

The solution was to combine the best of both worlds – Class A’s superior sound and Class B’s excellent efficiency, into THX via Feed Forward Technology.

Essentially, this technology takes the distortion created by the more efficient type B process and inverts it, which thus cancels out and eliminates the distortion. As a result, you get a much louder and more powerful audio signal that retains its clarity and integrity.Major HiFi

Final Word

So what does this all mean, basil?

A Headphone Amp that utilizes THX technology is going to perform at a high level, with less distortion and a cleaner overall sound; that is something that can’t really be disputed.

The question becomes then, is it enough of a difference for you to actually hear in real-time?

As in, if I’m going back and forth between one Amp that utilizes THX vs. one that doesn’t, can I tell?

I personally believe most people won’t be able to tell, no. We’re talking about fractions of a percentage here.

If you believe you can discern those differences, more power to you.

The fact of the matter is that most Amp/DACS nowadays advertise minuscule Total Harmonic Distortion as it is already, and I’ve reviewed over 65 Amps & DACS in total at the time of this writing.

Most of them have extremely low distortion.

Can I tell the difference between a dead neutral Solid State amplifier (i.e. one with extremely low output impedance) that doesn’t have the THX stamp vs. one that does?

No, probably not, and this is another issue I have with Amps & DACS in general.

Few people would try to say they could hear that difference; if there was even one at all.

My advice is that if you do want to run balanced XLR, a THX amp can be a great option.

But you can run balanced 4.4mm with most iFi products as well. It really just depends on what your goals are.

The point is that you don’t necessarily need a THX amp to garner an amazing listening experience. A regular Solid State amp with very low output impedance like the JDS ATOM will do the job just fine.

FiiO’s K7 contains the THX stamp, but is it worth the money?

Learn More:


Well, that’s about it for today my friend! I hope you’ve enjoyed this discussion on What is THX AAA? and came away with some valuable insight.

If you love what I do here and want to support the blog and channel in a more personal way, check me out on Patreon and discover all the value I have to offer you.

Questions? Comments? Requests? Did I miss the mark on something? Please let me know down below or Contact me!!

Is THX technology important to YOU? Have I described it well? I would love to hear from you. Until next time…

All the best and God bless,





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