Reviews & Press Coverage
By Stjernholm Reviews - Dream Speaker: Treble Clef TCA-M | $100K Acoustic Masterpiece That REDEFINES High-End Audio!
23 May 2025
"In a world where bold innovation often struggles against big industry inertia, it’s refreshing—and inspiring—to see a small company like Treble Clef Audio rise above the noise.
Born from the relentless drive of one man, the Treble Clef TCA-M is not just a luxury loudspeaker—it’s a real statement. A sculptural, fully active system with a patented bass design, years in the making, challenging the giants of high-end audio, even names like Bang & Olufsen, on their own turf.
As an industry consultant, I get to see many ambitious ideas. Few make it to the finish line with this level of refinement and originality.
Together with the Silverback Listening Team, a dedicated focus group representing distinct listener profiles, we’ve put the TCA-M through its paces. What we found? Let’s just say this speaker does more than defy expectations—it redefines them. Acoustic performance that vanishes into the room, a soundstage that feels more like an instrument than a hi-fi system, and a sonic signature perfect for jazz and acoustic music lovers."
Morten Stjernholm
SoundStage! Podcast - A Completely Different Speaker—Ole Siig of Treble Clef Audio (S3:E24)
27 Feb 2025
By soundstagenetwork: "Treble Clef Audio's TCA-M Loudspeaker—Danish, Active, Expensive, and Dazzingly Original"
4 Nov 2024
"The TCA-M is the first loudspeaker from a new brand: Treble Clef Audio. The TCA-M began as a "passion project" for founder Ole Siig, but when he realized his product had appeal to others, he turned it into a commercial venture.
The TCA-M is a fully active, three-way loudspeaker with one tweeter, one midrange, and two woofers. The two woofers are configured as a "folded dipole," which is one of the TCA-M's several patented technologies. In this video, Ole describes the woofers and the other technologies he's used in the TCA-M, as well as the reason for its treble clef-shaped design."
"Regardless of the music we played, the TCA-Ms sounded extremely good—stunning, at times—projecting open, clear sound consistently and effortlessly."
"What I was most impressed with was the depth, power, and character of the bass. It was unlike anything I’d heard before."
"On St. Vincent’s “Los Ageless,” from her 2017 album MassEducation, the clarity of the piano, particularly in the lower register, was truly exceptional. There was an immediacy to it that was uncanny."
"The TCA-Ms’ clarity and neutrality in the high range didn’t disappoint either. The cymbal strikes in Fleetwood Mac’s “Dreams,” from their 1977 album Rumours, can sound overly splashy with some speakers. With the TCA-Ms, what splashiness did come through sounded completely authentic—it was in the recording. Stevie Nicks’s voice, which is slightly buried in the mix, was completely exposed, sounding as clear as I’ve ever heard it. On The Tragically Hip’s “Long Time Running,” from the 2021 remaster of Road Apples, everything, from the vocals to the guitars to the drums, was reproduced with incisive clarity."
SoundStage! Audiophile Podcast - New Loudspeakers Galore
24 Oct 2024
Treble Clef Audio from 8:27
Testimonials in the words of musicians
Rudy Van Gelder Studio session TCA-M playback event
"I was thrilled and honored to be a part of this first opportunity to introduce the Treble Clef Audio TCA-M Audio Design Loudspeakers in NYC. After recording an exclusive session for the purpose of this highly descriptive presentation by creator and founder Ole Siig, Kresten Osgood, Sam Yahel and myself spoke about the process of recording at the famed Rudy Van Gelder’s Studio and our views about its outcome. Listening to the captured music we created the day before through the TCA-M speakers was truly an EAR OPENING EXPERIENCE A MULTIDIMENSIONAL LIVE SWIRLING SOUND NEVER BEFORE HEARD OR FELT FILLED THE ROOM“
JOE LOVANO. GRAMMY-WINNING SAXOPHONIST, COMPOSER AND PRODUCER, ECM RECORDING ARTIST
“If heaven is made of sound, I visited it on may 19th and 20th. Listening to the way my drumming sounded in the Van Gelder studio with Maureen Sickler at the mixing board was an absolute thrill. Such clarity in the recording that it was almost textural. On the next day, hearing the mixed version on the TCA speakers was simply the best representation of my sound I have ever experienced on a recording. It was literally like being in the room at the drums while I was playing. As musicians we spend so much time perfecting our touch so we get the best acoustic sound on our instruments. So much time goes into working on that from all angles. During my 25+ year long career I have grown accustomed to the fact that my touch cannot be captured in the studio and is usually poorly represented on sound systems. I am not saying that all sound systems or recordings I have made sound bad..many are enjoyable but they are something else than what i am doing acoustically...and i have gotten used to that. So on may 20th when everything came together: amazing musicians, amazing studio, amazing engineer and amazing speakers I was in heaven.”
KRESTEN OSGOOD. DRUMMER, COMPOSER, MULTI-INSTRUMENTALIST, COMMUNICATOR
“This was my first time hearing these speakers and our recording from the Rudy Van Gelder Studio. I just had a microsecond when the drums came in on the track where I thought - who's playing drums in the room right now while we're trying to hear this music? - it was confusing to me - like oh that's us! The TCA-M is something different it does feel like somebody's playing in the room!”
SAM YAHEL. TOP SPOT IN DOWNBEAT’S INTERNATIONAL CRITICS POLL AS A TALENT DESERVING OF RECOGNITION
To us, authentic means - as the musicians, the producer, and the recording engineer originally intended and perceived their work. While our definition of authentic is ultimately subjective, achieving this illusion demands intense and precise research, science, and engineering.
Ole Siig, Chief Designer & Founder
Joe Lovano Records at Van Gelder Studio and You Are Invited to Attend—A Tracking Angle Exclusive!
1 Jul 2024
Michael Fremer of Tracking Angle
"well, I was and here's the video"
Would you like to attend a recording session at Rudy Van Gelder's legendary Englewood Cliffs studio featuring saxophone great Joe Lovano? Of course you would! I was lucky enough to attend one—the only invited journalist—last May 19th, four days after returning from Switzerland following High End 2024. Here's the story."
"I went to have a look and a listen and I’m happy I did. You can argue whether the Treble Clef is beautiful as a sculptural object (I think it is), but there is no discussion that it is a VERY interesting loudspeaker system. It managed to play beautifully in a acousticly very poor environment. Somewhat baffling it sounded very good and certainly whetted my appetite for more. Well done."
"Treble Clef Audio is an interesting new Danish startup making innovative and exciting loudspeakers. Not Boring’s Eric van Spelde flew out to Copenhagen to chat with the head of the company, Ole Siig, about the concept and inspiration for the project."
"The first thing that strikes you is that, like with real instruments playing, the sound is completely uniform no matter where you sit or stand in the room."
"There are no artefacts to reveal there's a loudspeaker system producing those deep notes rather than a natural sound source, and nor does it at any time – or at any location inside or even outside the venue – seem less than fully integrated with the rest of the frequency band."
"This isn't just a frilly industrial design exercise. There's sophisticated engineering involved."
"I remember a soundscape that I haven't really heard anywhere else. Not necessarily a sign of quality that something is new or stands out from other experiences. But when there is so much presence, punch through and lack of enclosure sound, it's good - it was like hearing hi-fi all over again.”
"Siig has the visual aspect covered in spades with an imaginative treble clef structure that elegantly symbolizes the point of the exercise: the enjoyment of music. Explaining what may well be the ultimate expression of form following function, Siig says: “To deliver highly accurate and reliably authentic sound experiences, we must fundamentally break the conventions of passive and box loudspeaker design.” In breaking the rules, the company is using “acoustic science, patented innovation, design, and precise engineering” to turn traditional box speaker design on its ear."
