The Absolute Sound Podcast

Today I’m taking an inside look at possibly the most innovative company in the consumer audio space. I say this because today’s subject, Theoretica Applied Physics, is working on some of the biggest problems of audio believability, their results are quite successful in my experience, and the architecture they use is relatively low cost. Let’s take a deeper look. Learn more: https://www.theoretica.us/ This video is sponsored by: https://www.theabsolutesound.com/newsletter 00:00 Theoretica Applied Physics 00:56 Believability 03:38 Advanced Technologies 06:27 Problem 1 Part A 11:59 Problem 2 15:56 Problem 1 Part B 19:15 Problem 3 22:15 Problem 4 24:42 Summary Newsletter: https://www.theabsolutesound.com/newsletter Facebook: https://www.facebook.com/theabsolutesound Substack: https://www.theabsolutesound.substack.com What Is The Absolute Sound? The Absolute Sound magazine has been a leading publication in high-end audio since 1972. Since the early 2000s, The Absolute Sound has expanded to include web, newsletter, digital magazine, social media, YouTube and Substack platforms. The Absolute Sound platforms have a global audience of over 500,000 audiophiles. #hifi #audiophile #theabsolutesound

Flexibility is not something one usually associates with wired headphones. After all, you're tethered to your equipment. You can't go out, hop up and get a cup of coffee, and you can't do a lot of adjustment to the sound profile as well. Wireless headphones promise to do a lot more. Aside from the flexibility of being able to get up and move around, that will without a cable tied to your head. But also the idea is you could adjust the sound to your own personal specifications, as it were, because wireless headphones have digital signal processing on board. So if you need to, you could tweak the sound. The trouble is, in cutting the cable. Obviously a lot of the sound quality got cut as well. Sennheiser now has tried to solve that problem with the HD630s. This video is sponsored by: https://www.hifiman.com/products/detail/350 00:00 Sennheiser HDB 630 01:39 Overview 06:31 Sound Quality 12:17 Compare & Contrast 13:45 Summary Newsletter: https://www.theabsolutesound.com/newsletter Facebook: https://www.facebook.com/theabsolutesound Substack: https://www.theabsolutesound.substack.com What Is The Absolute Sound? The Absolute Sound magazine has been a leading publication in high-end audio since 1972. Since the early 2000s, The Absolute Sound has expanded to include web, newsletter, digital magazine, social media, YouTube and Substack platforms. The Absolute Sound platforms have a global audience of over 500,000 audiophiles. #hifi #audiophile #theabsolutesound

In this briefing, I give my basic observations about the performance of the Isoacoustics GAIA Neo speaker footers. These are complex passive absorbers that replace the spikes normally used at the base of speakers like my test subject, the Perlisten S7t. Normally, I think of products like this as “below threshold” items – products that may be beneficial, but whose effect may be difficult to hear in isolation, especially because a quick A/B comparison is hard and the effect is subtle. But I heard a demo arranged by IsoAcoustics that suggested otherwise, and when they offered to supply a set for testing, I accepted because in my listening room I have much longer to understand what products do. Let’s see what I found. In memorium: Dan Roemer: September 4, 1970 - December 26, 2026 Dan was the genius behind the S7t speaker mentioned in this video. He was a great designer and a special person. He will be missed. This video is sponsored by: https://www.sotm-audio.com/ Tom's Listening Room: https://youtu.be/To3yKpFUMNI Newsletter: https://www.theabsolutesound.com/newsletter Facebook: https://www.facebook.com/theabsolutesound Substack: https://www.theabsolutesound.substack.com What Is The Absolute Sound? The Absolute Sound magazine has been a leading publication in high-end audio since 1972. Since the early 2000s, The Absolute Sound has expanded to include web, newsletter, digital magazine, social media, YouTube and Substack platforms. The Absolute Sound platforms have a global audience of over 500,000 audiophiles. #hifi #audiophile #theabsolutesound

Erratum: Giveaway occurs on January 30, 2026 When we reviewed the new Onkyo M-80 power amp and P-80 streaming preamp, Onkyo kindly sent us a TX-RZ30 receiver to offer to our viewers as a giveaway. We didn’t want to interrupt the review video excessively, yet we thought there might be viewers interested in the giveaway who hadn’t seen the review. So, we made this brief Giveaway announcement. January 30, 2026 Viewer Giveaway of an Onkyo 9.2 channel Atmos receiver; details after the break and here: https://www.theabsolutesound.com/give... QR Code Link for $1 subscription offer: https://theabsolutesound.secure.darwin.cx/J25YTS5A Onkyo P-80 preamp and M-80 amp Review: https://youtu.be/NMcIE3K2bD8?si=pLFAz30kRb6KH9ET Newsletter: https://www.theabsolutesound.com/newsletter Facebook: https://www.facebook.com/theabsolutesound Substack: https://www.theabsolutesound.substack.com What Is The Absolute Sound? The Absolute Sound magazine has been a leading publication in high-end audio since 1972. Since the early 2000s, The Absolute Sound has expanded to include web, newsletter, digital magazine, social media, YouTube and Substack platforms. The Absolute Sound platforms have a global audience of over 500,000 audiophiles. #hifi #audiophile #theabsolutesound

There's a lot of nostalgia out there for the 1980s, and when British speaker maker Monitor Audio looked back at that decade, it discovered gold in the form of its studio 15 speaker. And so, inspired by the creativity and individuality of the 1980s, monitors set out to create the studio 89. So are these $2,750 per pair speakers totally awesome or just bogus? Let's find out! This video is sponsored by: https://store.hifiman.com/index.php/he1000-unveiled.html?gad_source=1&gad_campaignid=20953209524&gbraid=0AAAAACkVu54tFgOM8QBnVRrsJIzTJpilW&gclid=Cj0KCQiAsNPKBhCqARIsACm01fSUNf7KaVH-yUHcTuJoHzJc0e1fp-wEC6HMoJiL9syFDWCu1AzKJCMaAoepEALw_wcB 00:00 Monitor Audio Studio 89 01:09 Overview 03:48 Set Up 05:47 Sound Quality 09:44 Tradeoffs Newsletter: https://www.theabsolutesound.com/newsletter Facebook: https://www.facebook.com/theabsolutesound Substack: https://www.theabsolutesound.substack.com What Is The Absolute Sound? The Absolute Sound magazine has been a leading publication in high-end audio since 1972. Since the early 2000s, The Absolute Sound has expanded to include web, newsletter, digital magazine, social media, YouTube and Substack platforms. The Absolute Sound platforms have a global audience of over 500,000 audiophiles. #hifi #audiophile #theabsolutesound