Audio Unleashed

“Maybe We’re the Chumps”

We’re on Patreon! Find us at https://www.patreon.com/AudioUnleashedThis week, Dennis and Brent deconstruct the latest column by Stereophile’s editor-in-chief and contemplate whether his position on spooky woo-woo has devolved in the past decade. Then they ogle cool amps and preamps on AliExpress that borrow revered brands yet cost only hundreds—and also examine how crazy it’d be to buy this stuff right now (b/c tariffs, not b/c communism and chopsticks). They conclude with a not-terribly-deep dive into a new article from Dennis about audio DIY, but not the kind of audio DIY you’re probably imagining.
Brent’s audio projects:
💿 Plaid Pants, Brent’s latest album! https://cygerbutterworth.bandcamp.com/album/plaid-pants
💿 The Audiophile Society's Headphone Evaluation and Spatial Audio Test Album: https://theaudiophilesociety.com/collections/albums/products/the-audiophile-societys-headphone-evaluation-and-spatial-audio-test-album
Dennis’s book recommendations:
📚 Mood Machine: The Rise of Spotify and the Costs of the Perfect Playlist by Liz Pelly: https://amzn.to/4aMl9Xl
📚 Budget Travel For Dummies by Geoffrey Morrison: https://amzn.to/3uiIPlp
📚Sound Reproduction: The Acoustics and Psychoacoustics of Loudspeakers and Rooms by Floyd Toole: https://amzn.to/3ZlTLtE
📚Loudspeaker Design Cookbook 8th Edition: Volume 1 by Vance Dickason: https://amzn.to/42pdwk0
📚 The Loop: How Technology Is Creating a World Without Choices and How to Fight Back by Jacob Ward: https://amzn.to/4cyzSET
Further Reading: 
“Chips for Chumps” by Jim Austin: https://www.stereophile.com/asweseeit/505awsi/index.html
“Chips Are Still For Chumps” by Jim Austin: https://www.stereophile.com/content/chips-are-still-chumps
Can't afford getting my MiniDSP Flex HTx out of Customs: https://www.reddit.com/r/audiophile/comments/1jw4agi/cant_afford_getting_my_minidsp_flex_htx_out_of/?share_id=8ttFl2ZUnK8f5iRYFUiXX&utm_content=1&utm_medium=ios_app&utm_name=ioscss&utm_source=share&utm_term=1
“Nobody Warned Me Vinyl Would Turn Into a DIY Hobby” by Dennis Burger: https://www.soundstageaccess.com/index.php/feature-articles/1332-nobody-warned-me-vinyl-would-turn-into-a-diy-hobby
“AXPONA 2025 Audio Show Report” by The Absolute Sound: https://youtu.be/yma3eOoy3ts?si=OfWbec3_nunA8qei

“More Useful Than Five Years’ Worth of Audio Magazines”

We’re on Patreon! Find us at https://www.patreon.com/AudioUnleashedThis week, Dennis and Brent explore the fast-growing world of made-to-order lathe-cut records – and even play one for you! (Prepare to be … well, prepared.) Then they delight in some made-to-order pink noise from Erin’s Audio Corner, and deconstruct Holly Cole’s new made-to-order (well, for audiophiles) album with the help of Stereophile. 
Brent’s audio projects:
💿 Plaid Pants, Brent’s latest album! https://cygerbutterworth.bandcamp.com/album/plaid-pants
💿 The Audiophile Society's Headphone Evaluation and Spatial Audio Test Album: https://theaudiophilesociety.com/collections/albums/products/the-audiophile-societys-headphone-evaluation-and-spatial-audio-test-album
Dennis’s book recommendations:
📚 Mood Machine: The Rise of Spotify and the Costs of the Perfect Playlist by Liz Pelly: https://amzn.to/4aMl9Xl
📚 Budget Travel For Dummies by Geoffrey Morrison: https://amzn.to/3uiIPlp
📚Sound Reproduction: The Acoustics and Psychoacoustics of Loudspeakers and Rooms by Floyd Toole: https://amzn.to/3ZlTLtE
📚Loudspeaker Design Cookbook 8th Edition: Volume 1 by Vance Dickason: https://amzn.to/42pdwk0
📚 The Loop: How Technology Is Creating a World Without Choices and How to Fight Back by Jacob Ward: https://amzn.to/4cyzSET
 
Further Reading: 
“Mid-Fi: Cutting Plastic Records with Michael Dixon” by Scott Evans: https://tapeop.com/interviews/165/mid-fi-cutting-plastic-records-michael-dixon/
“How Would YOU Describe These Sounds? | Audiophile Challenge!” by Erin's Audio Corner: https://youtu.be/Yu0VE2RVBGE?si=9Gk96P9JL48UlZqV
“Holly Cole's Dark Moon” by Robert Baird: https://www.stereophile.com/content/holly-coles-dark-moon

“Not Understanding What Nirvana Means”

We’re on Patreon! Find us at https://www.patreon.com/AudioUnleashedThis week, Dennis and Brent stop by Strata-gee to see how Sonos is strategorizing to scramble back to the summit of the sound souk with a new … oh, wait, change in plans! Then they ally themselves (very conditionally) with a British-ish mastering engineer who contends that high-priced DACs are a scam. Then they bring their incomparable incredulity to bear on the question of whether adding hobbled Dolby Atmos functionality to Cadillacs is the way forward for Atmos or Cadillac.
Brent’s audio projects:
💿 Plaid Pants, Brent’s latest album! https://cygerbutterworth.bandcamp.com/album/plaid-pants
💿 The Audiophile Society's Headphone Evaluation and Spatial Audio Test Album: https://theaudiophilesociety.com/collections/albums/products/the-audiophile-societys-headphone-evaluation-and-spatial-audio-test-album
 
Dennis’s book recommendations:
📚 Mood Machine: The Rise of Spotify and the Costs of the Perfect Playlist by Liz Pelly: https://amzn.to/4aMl9Xl
📚 Budget Travel For Dummies by Geoffrey Morrison: https://amzn.to/3uiIPlp
📚Sound Reproduction: The Acoustics and Psychoacoustics of Loudspeakers and Rooms by Floyd Toole: https://amzn.to/3ZlTLtE
📚Loudspeaker Design Cookbook 8th Edition: Volume 1 by Vance Dickason: https://amzn.to/42pdwk0
📚 The Loop: How Technology Is Creating a World Without Choices and How to Fight Back by Jacob Ward: https://amzn.to/4cyzSET
Further Reading: 
“Is Sonos Adrift and Directionless? Or On the Right Track?” by Ted Green: https://www.strata-gee.com/is-sonos-adrift-and-directionless-or-on-the-right-track/
“The DAC Scam - Almost everyone believes the hype” by AP Mastering: https://youtu.be/7Sg1nYLmLCw?si=SrQ47F74vdBWgNTX
“DAC Delusion: These test results are insane!” by AP Mastering: https://youtu.be/LbcEgxm6RTU?si=jICNAe4CLwDgEgAI
“General Motors Introduces Dolby Atmos Across its Entire 2026 EV Lineup”: https://audioxpress.com/news/general-motors-introduces-dolby-atmos-across-entire-2025-ev-lineup
 

“Fun and Depressing at the Same Time!”

We’re on Patreon! Find us at https://www.patreon.com/AudioUnleashedThis week, Dennis and Brent page through the storied Gray Lady (known to some as the New York Times and to Brent as “employer”) and find, to their amazement, an in-depth profile of high-end vinyl company Acoustic Sounds and its iconoclastic proprietor, Chad Kassem. Then they check out what YouTube star Cheapaudioman says are the biggest mistakes audiophiles can make (besides failing to listen to the Audio Unleashed podcast). They conclude by digging through a Tape Op profile of a man in Burbank, California whose life’s work is getting messed-up tapes to play so you can finally hear A Flock of Seagulls as they were meant to be heard.
Buy-now links for products mentioned herein (As Amazon Associates, we may earn a small cut from qualifying purchases):
💿 Plaid Pants, Brent’s latest album! https://cygerbutterworth.bandcamp.com/album/plaid-pants
💿 The Audiophile Society's Headphone Evaluation and Spatial Audio Test Album: https://theaudiophilesociety.com/collections/albums/products/the-audiophile-societys-headphone-evaluation-and-spatial-audio-test-album
📚 Mood Machine: The Rise of Spotify and the Costs of the Perfect Playlist by Liz Pelly: https://amzn.to/4aMl9Xl
📚 Budget Travel For Dummies by Geoffrey Morrison: https://amzn.to/3uiIPlp
📚Sound Reproduction: The Acoustics and Psychoacoustics of Loudspeakers and Rooms by Floyd Toole: https://amzn.to/3ZlTLtE
📚Loudspeaker Design Cookbook 8th Edition: Volume 1 by Vance Dickason: https://amzn.to/42pdwk0
📚 The Loop: How Technology Is Creating a World Without Choices and How to Fight Back by Jacob Ward: https://amzn.to/4cyzSET
 
Further Reading: 
“The Wizard of Vinyl is in Kansas” by Ben Sisario: https://www.nytimes.com/2025/03/05/arts/music/vinyl-albums-chad-kassem-acoustic-sounds.html
“Don't Waste Money on These Audiophile TRAPS!” by cheapaudioman: https://youtu.be/m4ubVpSe_8M?si=oGUpiToYTT39eCuT
“How to Make Your Own Audio Diffusers” by Brent: https://www.lifewire.com/make-your-own-audio-diffuser-3134903
Shibuya Hi-Fi Vinyl Bar: https://www.shibuyahifi.com/
“Dan Johnson: Preserving the Past” by Larry Crane: https://tapeop.com/interviews/165/dan-johnson/
Nonagon Infinity Live - 8-Track: https://needlejuicerecords.com/products/nonagon-infinity-live-8-track

“Ignorance Is Such a Rare Commodity”

We’re on Patreon! Find us at https://www.patreon.com/AudioUnleashedThis week, Dennis and Brent unexpectedly flip the phase of their podcast by lavishly praising another audio pundit. But they quickly get back to business with an in-depth report on what might be the most preposterous subwoofer review (and most preposterous subwoofer setup) in a long history of preposterous subwoofer reviews by audiophile mags. Then they try to figure out why a famed accessories manufacturer insists that blind testing doesn’t work yet employs it nonetheless, and contemplate Passion for Sound’s assertion that science disproves the validity of science.
Buy-now links for products mentioned herein (As Amazon Associates, we may earn a small cut from qualifying purchases):
💿 Plaid Pants, Brent’s new album! https://cygerbutterworth.bandcamp.com/album/plaid-pants
💿 The Audiophile Society's Headphone Evaluation and Spatial Audio Test Album: https://theaudiophilesociety.com/collections/albums/products/the-audiophile-societys-headphone-evaluation-and-spatial-audio-test-album
📚 Mood Machine: The Rise of Spotify and the Costs of the Perfect Playlist by Liz Pelly: https://amzn.to/4aMl9Xl
📚 Budget Travel For Dummies by Geoffrey Morrison: https://amzn.to/3uiIPlp
📚Sound Reproduction: The Acoustics and Psychoacoustics of Loudspeakers and Rooms by Floyd Toole: https://amzn.to/3ZlTLtE
📚Loudspeaker Design Cookbook 8th Edition: Volume 1 by Vance Dickason: https://amzn.to/42pdwk0
📚 The Loop: How Technology Is Creating a World Without Choices and How to Fight Back by Jacob Ward: https://amzn.to/4cyzSET
Further Reading: 
“Improve Your Stereo With These Three EASY Tips!” by Erin’s Audio Corner: https://youtu.be/FHjy0ZV0V7U?si=yg19a1toVoVlAIfZ
“REL No.31 powered subwoofer” by Rogier van Bakel: https://www.stereophile.com/content/rel-no31-powered-subwoofer
“Why you SHOULDN'T trust blind audio tests (according to science)” by Passion for Sound: https://youtu.be/OZMACL6z3OU?si=j84a3V4DvehHNZ_w
“What the AKG K371 Headphones Tell Us About Slow Listening” by Brent Butterworth: https://www.soundstagesolo.com/index.php/features/221-what-the-akg-k371-headphones-tell-us-about-slow-listening

“Make Quad Great Again!”

We’re on Patreon! Find us at https://www.patreon.com/AudioUnleashedThis week, Dennis wonders why a writer for The Atlantic is wondering why his cheap Bluetooth speaker can’t generate the feeling of community he got at a Beyoncé concert, while Brent wonders why Dennis was reading The Atlantic. Then they dig into a recent article on acoustics by one of audio’s most popular personalities to learn what’s better: a lousy speaker in a good room or a good speaker in a lousy room. They conclude with a deep dive into—surprise!—an article about hi-fi published in a mainstream scientific magazine, which recommends a whole new (well, kinda new) speaker layout.
Buy-now links for products mentioned herein (As Amazon Associates, we may earn a small cut from qualifying purchases):
💿 Plaid Pants, Brent’s new album! https://cygerbutterworth.bandcamp.com/album/plaid-pants
💿 The Audiophile Society's Headphone Evaluation and Spatial Audio Test Album: https://theaudiophilesociety.com/collections/albums/products/the-audiophile-societys-headphone-evaluation-and-spatial-audio-test-album
📚 Mood Machine: The Rise of Spotify and the Costs of the Perfect Playlist by Liz Pelly: https://amzn.to/4aMl9Xl
📚 Budget Travel For Dummies by Geoffrey Morrison: https://amzn.to/3uiIPlp
📚Sound Reproduction: The Acoustics and Psychoacoustics of Loudspeakers and Rooms by Floyd Toole: https://amzn.to/3ZlTLtE
📚Loudspeaker Design Cookbook 8th Edition: Volume 1 by Vance Dickason: https://amzn.to/42pdwk0
📚 The Loop: How Technology Is Creating a World Without Choices and How to Fight Back by Jacob Ward: https://amzn.to/4cyzSET
Further Reading: 
“Bluetooth Speakers Are Ruining Music” by Michael Owen: https://www.theatlantic.com/technology/archive/2025/02/bluetooth-speakers-ruining-music/681571/?gift=UE260Y8zIMsW6uBskvxKEDxO5tYZ2efPoBTRLiJy30M&utm_source=copy-link&utm_medium=social&utm_campaign=share
“The most important hi-fi component is your room” by John Darko: https://darko.audio/2025/02/why-your-room-is-your-most-important-hi-fi-component/
“How to Make Your Own Audio Diffusers” by Brent Butterworth: https://www.lifewire.com/make-your-own-audio-diffuser-3134903
“The Science of Hi-Fi Audio” by John Beerends, Richard Van Everdingen: https://www.americanscientist.org/article/the-science-of-hi-fi-audio
“The Influence of Listeners’ Experience, Age, and Culture on Headphone Sound Quality Preferences” by Olive, Sean; Welti, Todd; McMullin, Elisabeth: https://aes2.org/publications/elibrary-page/?id=17500
“MEMS!” by Geoffrey Morrison: https://www.soundstagesolo.com/index.php/features/445
“Fresh From the Bench: USound Megaclite 4.0 UH-R2040 MEMS Earphones” by Brent Butterworth: https://audioxpress.com/article/fresh-from-the-bench-usound-megaclite-4-0-uh-r2040-mems-earphones

“It’s Like Jan Brady!”

We’re on Patreon! Find us at https://www.patreon.com/AudioUnleashedThis week, Dennis and Brent discuss Danny Ritchie’s diagnosis of the legendary Wilson WATT/Puppy; can he find the cure for questionable engineering? Then they ponder whether Spotify is truly evil, and what malice might lurk in the hearts of other streaming services. And they wrap up with speculation about why a stupid article on vinyl seems to have been memory-holed entirely off the internet—and why a vinyl guru’s attempt to demo over YouTube says much about the psychology of crowds and nothing about vinyl.
Buy-now links for products mentioned herein (As Amazon Associates, we may earn a small cut from qualifying purchases):
💿 Plaid Pants, Brent’s new album! https://cygerbutterworth.bandcamp.com/album/plaid-pants
💿 The Audiophile Society's Headphone Evaluation and Spatial Audio Test Album: https://theaudiophilesociety.com/collections/albums/products/the-audiophile-societys-headphone-evaluation-and-spatial-audio-test-album
📚 Mood Machine: The Rise of Spotify and the Costs of the Perfect Playlist by Liz Pelly: https://amzn.to/4aMl9Xl
📚 Budget Travel For Dummies by Geoffrey Morrison: https://amzn.to/3uiIPlp
📚Sound Reproduction: The Acoustics and Psychoacoustics of Loudspeakers and Rooms by Floyd Toole: https://amzn.to/3ZlTLtE
📚Loudspeaker Design Cookbook 8th Edition: Volume 1 by Vance Dickason: https://amzn.to/42pdwk0
📚 The Loop: How Technology Is Creating a World Without Choices and How to Fight Back by Jacob Ward: https://amzn.to/4cyzSET
Further Reading: 
“The $27,900 disappointment? Wilson Audio Watt Puppy 8 issues…” by GR-Research: https://youtu.be/Tma9jFZ3-3k?si=ddg-crv3nFK7g03p
“Upgrade Success or Failure With Wilson Audio?” by GR-Research: https://youtu.be/pIt2pcQvf6M?si=A9Y6-QLI6uig4-_t
“Is There Any Escape from the Spotify Syndrome?” by Hua Hsu: https://www.newyorker.com/magazine/2024/12/30/mood-machine-liz-pelly-book-review
“The Physics of Vinyl (A Sonic Hug in a World of Noise)” by Andrew Oattes (if you find it, let us know!) 
“It’s time we admit to, and accept, vinyl’s dirty secret” by John Higgins: https://www.digitaltrends.com/home-theater/time-to-admit-to-vinyls-dirty-secret/
“2024 Golden Ear: Wilson-Benesch GMT One Turntable System” by Michael Fremer: https://www.theabsolutesound.com/articles/2024-golden-ear-wilson-benesch-gmt-one-turntable-system/?mc_cid=02535d5b76
“LIsten to "Babylon Sisters" UHQR on $370K Wilson-Benesch GMT One Turntable” by TrackingAngle: https://youtu.be/NBCnoVlFLDY?si=twY4G5cyczAXbgYD
“Hard truth: most vinyl is digital anyway” by AP Mastering: https://youtu.be/IM7sI7GZPbk?si=3StyrxM4fRRqlnqL

“A Penthouse Forum Thing?”

We’re on Patreon! Find us at https://www.patreon.com/AudioUnleashedThis week, Dennis and Brent discuss how spending money and seeing measurements can influence subjective listening impressions, take a weird vicarious trip to a Japanese Kissa, and listen to a direct comparison between the same digital master delivered on a variety of different media.
Buy-now links for products mentioned herein (As Amazon Associates, we may earn a small cut from qualifying purchases):
💿 Plaid Pants, Brent’s new album! CD normally costs $13 ($10 + $3 for shipping); use code audiounleashedepi42 for 40% off the CD. (Offer extended! Now expires 2/1/25.) 
https://cygerbutterworth.bandcamp.com/album/plaid-pants
📚 A Confederacy of Dunces by John Kennedy Toole: https://amzn.to/4h7kZwb
📚 Budget Travel For Dummies by Geoffrey Morrison: https://amzn.to/3uiIPlp
📚Sound Reproduction: The Acoustics and Psychoacoustics of Loudspeakers and Rooms by Floyd Toole: https://amzn.to/3ZlTLtE
📚Loudspeaker Design Cookbook 8th Edition: Volume 1 by Vance Dickason: https://amzn.to/42pdwk0
📚 The Loop: How Technology Is Creating a World Without Choices and How to Fight Back by Jacob Ward: https://amzn.to/4cyzSET
Further Reading: 
“Was ASR right on the Power Plant?” by Paul McGowan, PS Audio: https://youtu.be/wAywgassj1Q?si=hvhFJwuaL_ToguSI
“On Listening - Part 7: The Japanese Kissa” by OMA ǀ Oswalds Mill Audio: https://youtu.be/ZYb6AnGOJ0I?si=UqYPJQnZsKdXuLuV
“Is Hi-Fi a Kink or a Fetish?” by Dennis Burger: https://www.soundstageaccess.com/index.php/feature-articles/1305-is-hi-fi-a-kink-or-a-fetish
“I Compared Vinyl vs Tape vs Cassette vs Streaming – Results were SHOCKING!” by Dom Sigalas: https://youtu.be/6iohmhZWDNo?si=kRUeHQxxTf7jZVbH
“The New Standard That Killed the Loudness War” by Brent Butterworth: https://www.soundstagesolo.com/index.php/features/274-the-new-standard-that-killed-the-loudness-war

“Inner Detail Inception!”

We’re on Patreon now! Find us at https://www.patreon.com/AudioUnleashedThis week, while the Audiophiliac (Steve Guttenberg) questions whether we can trust audio reviewers, Dennis and Brent decide whether we can trust Steve Guttenberg. Then they make the mistake of watching one the audio world’s cringiest videos, in which audio icon Mark Levinson tries to explain how PCM audio is stressing everyone out, or not stressing everyone out, or something. Or nothing. Or whatever the lawyers let him say. Last, Dennis and Brent check out a Stereophile column by John Atkinson that definitely is not stressing anyone out—except perhaps makers of gratuitously expensive audio gear.
Buy-now links for products mentioned herein (As Amazon Associates, we may earn a small cut from qualifying purchases):
💿 Plaid Pants, Brent’s new album! CD normally costs $13 ($10 + $3 for shipping); use code audiounleashedepi42 for 40% off the CD. (Offer extended! Now expires 2/1/25.) https://cygerbutterworth.bandcamp.com/album/plaid-pants
📚 Budget Travel For Dummies by Geoffrey Morrison: https://amzn.to/3uiIPlp
📚Sound Reproduction: The Acoustics and Psychoacoustics of Loudspeakers and Rooms by Floyd Toole: https://amzn.to/3ZlTLtE
📚Loudspeaker Design Cookbook 8th Edition: Volume 1 by Vance Dickason: https://amzn.to/42pdwk0
📚 The Loop: How Technology Is Creating a World Without Choices and How to Fight Back by Jacob Ward: https://amzn.to/4cyzSET
Further Reading: 
“POLL: Are AUDIOPHILE Reviews BS?” by Steve Guttenberg Audiophiliac: https://youtu.be/as2IUMhxmJ0?si=kDLQIL7JUZdiAaj9
“How Do You Know Whether You Can Trust a Review?” by Dennis Burger: https://soundstageaccess.com/index.php/feature-articles/1309-how-do-you-know-whether-you-can-trust-a-review
“Can Daniel Hertz C-Wave ‘Fix’ PCM and Even Improve Your Health?” by Audiophile Junkie: https://youtu.be/kp2MmIqVjTA?si=p5AZvkScalmuEmNY
“Taking Care of Business” by John Atkinson: https://www.stereophile.com/content/taking-care-business

“The Streisand Effect”

We’re on Patreon now! Find us at https://www.patreon.com/AudioUnleashedThis week, Brent and Dennis dig into the latest drama surrounding a sus audio manufacturer trying to suppress bad press; riff on yet another article about the increasing appeal of vintage audio gear; and talk about king-of-all-audio-media John Darko’s experimentations with different amps driving KEF’s Q Concerto Meta speaker. Should you run screaming (or quietly exit) from any dealer who insists there's some perfect amp for your speakers?
Buy-now links for products mentioned herein (As Amazon Associates, we may earn a small cut from qualifying purchases):
💿 Plaid Pants, Brent’s new album! CD normally costs $13 ($10 + $3 for shipping); use code audiounleashedepi42 for 40% off the CD. (Offer expires 1/1/25.) 
https://cygerbutterworth.bandcamp.com/album/plaid-pants
📚 Budget Travel For Dummies by Geoffrey Morrison: https://amzn.to/3uiIPlp
📚Sound Reproduction: The Acoustics and Psychoacoustics of Loudspeakers and Rooms by Floyd Toole: https://amzn.to/3ZlTLtE
📚Loudspeaker Design Cookbook 8th Edition: Volume 1 by Vance Dickason: https://amzn.to/42pdwk0
📚 The Loop: How Technology Is Creating a World Without Choices and How to Fight Back by Jacob Ward: https://amzn.to/4cyzSET
Further Reading: 
“We Answer Floyd Toole's Burning Question (And Yours, Too!)” by Audio Unleashed: https://youtu.be/x4w33TTgRpE?si=9R5mgwfGAIf8fwUn
“Tom Evans audio proves that their $30,000 audio preamp is garbage by filing a bogus copyright claim” by Louis Rossmann: https://youtu.be/gJYIhLQJtTs?si=ghaXydj05zmCJzv7
“The £ 25, 000 Pre Amp That Went Wrong Tom Evans Mastergroove SR Mk III” by Mend It Mark: https://archive.org/details/the-gbp-25-000-pre-amp-that-went-wrong-tom-evans-mastergroove-sr-mk-iii-rjbp-fsfzi-i
“Why is vintage audio equipment booming?” by Suzanne Bearne: https://www.bbc.com/news/articles/clyjvn658n6o
“Amplifier matching with the KEF Q Concerto Meta” by John Darko: https://darko.audio/2024/12/amplifier-matching-with-the-kef-q-concerto-meta/