PureAudioProject Duet 15 Loudspeaker $8,490 Review
February 13, 2025 Comments Off on PureAudioProject Duet 15 Loudspeaker $8,490 Review
My impression is that among audiophiles of this era, the preferred sound emphasizes extremely low noise floors, see-through transparency, and, to my ears, an artificially hyped-up detail that is reminiscent of super high-definition television. Some of these attributes, to some degree, contribute to creating a credible musical experience. But they are not ends in and of themselves, certainly not from a musical point of view. At the extreme, they are distracting artifacts that take us farther away from the music, relegating us to taking pleasure in being observers of the experience rather than active participants in it.
The same point can be made slightly differently. We can hear something that sounds absolutely beautiful, stunning even, and find it seductive, relaxing, even gorgeous, yet find that it conveys nothing to us. By that, I mean it fails to provide insight into the composer’s intention, or into the interaction among the performers – the key element of what constitutes making music together (as opposed to playing in the same setting individually. It can sound gorgeous yet fail to convey emotional meaning or narrative content. It’s beautiful, but empty, much like the Cosmopolitan magazine issues of the 80s and 90s. We learn nothing from it.
The main problem with the focus on sound rather than music is that producing a desired sound is largely a technological achievement, whereas conveying the musical content in ways that express emotional or cognitive content or that allow us to see into the performance is an artistic achievement.

World Premiere Review!FiiO S15 Music Streamer
February 12, 2025 Comments Off on World Premiere Review!FiiO S15 Music Streamer
I connected a generic Ethernet cable from our home router to the S15’s LAN input. Our home’s Wi-Fi router is in the same room as my system, only about six feet from the equipment rack. Its LAN input was the source I used for much of the review, although I used my music server, connecting Wireworld’s Starlight 7 USB 2.0 cable, which ran to FiiO’s S15 rear panel USB input.
FiiO’s S15 analog outputs were connected to the linestage, usually a vacuum-tube powered Nagra Classic Preamp, but sometimes the two-chassis Pass Laboratories XP–22 linestage.
This system used for review would likely be more advanced than one that purchases a $1000 streamer. However, the FiiO S15 performed so well that it was suitable at home while I auditioned for this system.
I also listened to the FiiO S15 through headphones for much of this review. A very long run of Cardas interconnects terminated with RCAs ran between the analog output of the S15 to my headphone amplifiers. Most of the time I listened through a Woo Audio WA2 headphone amplifier. A while ago I replaced its stock input tubes with a matched pair of NOS (New Old Stock) Amperex 6299s and the larger output tubes with a matched pair of Tung-Sol 6080s. The other headphone amp was a very good-sounding solid-state Pass Laboratories HPA-1 that I acquired in 2016.
Whether listening to the FiiO S15 through my main audio system or headphones, I enjoyed listening to a wireless signal sent from my iPhone using Airplay. I heard no difference in using the Qobuz and Tidal apps in this way compared to using the apps on the front screen of the S15.

Music Hall Stealth Turntable Review
February 12, 2025 Comments Off on Music Hall Stealth Turntable Review
Headshells, of course, are another matter. While the Stealth’s included headshell is perfectly fine, it’s rather lightweight—ideal for the included 2M Blue—but lower compliance cartridges still may prefer something like an Ortofon LH-2000. That will necessitate using the Stealth’s included auxiliary counterweight to balance the tonearm. (Side note: the Stealth’s arm, clearly patterned after Technics right down to its basic dimensions, even accepts Technics 1200 series auxiliary screw-in counterweights, so if you ever lose the one that came with the table and your Music Hall dealer is unable to locate a replacement part, you could always go that way.)
Generally, headshell swapping wasn’t revelatory in my listening, with mostly slight differences between generic headshells and premium models from the likes of Audio-Technica, Ortofon, Yamamoto and some vintage goodies from Orsonic. Still, I don’t think that carefully-judged experimentation in this area is unwarranted, and while the performance differences may be minor relative to the package as a whole, it never hurts to have different headshells of varying weights and characteristics available for practical reasons like compliance matching or the ability to adjust azimuth, with the Stealth’s tonearm lacks. Is it rational to keep a couple thousand dollars worth of headshells around, like I do? Judge not lest ye be judged.

McIntosh C2800 Vacuum Tube Preamplifier Review
February 12, 2025 Comments Off on McIntosh C2800 Vacuum Tube Preamplifier Review
HiFi Rose RA280 Integrated Amplifier | REVIEW
February 11, 2025 Comments Off on HiFi Rose RA280 Integrated Amplifier | REVIEW
https://pt.audio/2025/02/02/hifi-rose-ra280-integrated-amplifier-review/#google_vignette
The HiFi Rose RA280 was an eye-opening piece to have in my home. I appreciated the sonic weight it brought to the table. It made me realize I have some changes to make toward system-wide improvement. HiFi Rose has a nice lineup of components, and I’ve been meaning to streamline my system for some time. One unit that I have my eye on is their RS520 Wireless Network Streamer & Integrated Amplifier. It has many of the same design features and would allow me to remove a device or two from my system. I think this company is making truly great gear, and should be considered by any audiophile looking to upgrade their system.


Franco Serblin Studio In Finland
February 11, 2025 Comments Off on Franco Serblin Studio In Finland
The Franco Serblin Studio Ktema speakers showcased at the new Sound Factor showroom in Finland. In the showroom, bass resonances are managed using precisely calibrated Helmholtz resonators, while sidewall reflections are controlled with cylindrical slat diffusers. The front wall is constructed from plywood but does not incorporate dedicated acoustic treatment elements.

Technics SL-1300G Review
February 10, 2025 Comments Off on Technics SL-1300G Review
https://www.stereophile.com/content/gramophone-dreams-92-technics-sl-1300g-record-player
For me the biggest news was the 1300G’s delta-sigma drive system: a digital rotational control technology that, according to Technics, suppresses microvibrations.
According to the Technics website: “The ΔΣ-Drive uses delta-sigma conversion technology to reduce errors in the drive signals, obtaining low distortion drive signals through highly precise PWM generation technology. It also helps to reduce the minor rotational inaccuracies and minute vibrations that cannot be picked up with wow and flutter or S/N ratios.”
This noise-reducing technology is assisted in its tasks by Technics’ Multi-Stage Silent Power Supply, which features active noise canceling.
The result of these new technologies, as I describe in my auditioning below, is a modestly priced record player that performs (noise-, speed-stability-, and momentum-wise) like those big-ticket luxury decks

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