Quicksilver KT Mono Tube Amplifier Review
November 30, 2025 Comments Off on Quicksilver KT Mono Tube Amplifier Review
Next up were the Russian Mullard CV4004 stock tubes. This was better. Less detail, sure, but a more fully rounded sound and no hole. I could live with these tubes. They did nothing wrong, but also did not do anything outstandingly well. Just solid-sounding tubes. Maybe it was not terribly surprising, but these sounded similar to the Mullard 12AX7 tubes from Great Britain, and it was six of one and half dozen of the other – between the two. Best to go with what is available and less expensive.
The next tubes just smoked me, the Amperex Bugle Boy tubes. I was not prepared for this degree of difference. Unlike the Mullards, which did everything very nicely, these tubes did everything exceptionally well. Darn, the guitars sounded like musical instruments instead of a copy of a guitar. What a fantastic sound stage, wide and deep, and “Yeah, I am a sound stage freak,” and these delivered. Powerful low end, both the low bass and the mid bass. Very lifelike male and female voices. These tubes simply had no weaknesses. Sign me up for these. Now I wonder what they would sound like in my McIntosh C2200? I do not want to know because they are not inexpensive tubes, and I’d need four of them.

Softears RSV-MKII Review
November 30, 2025 Comments Off on Softears RSV-MKII Review
The midrange has always been a special sauce for Softear’s IEMs, as they mostly get the timbre and tonality right every time.
Here, you get a rich and musical tonality that feels both natural and refined. The warmth from the low end naturally flows upward into the midrange, giving instruments like piano, cello, and vocals notes offering a thicker foundation.
The timbre is executed with precision, lending the instruments a natural and convincing sound, not synthetic or dry. String instruments carry a very satisfying note weight and palpable texture.
The lower midrange sits slightly back, neat and out of the way, so guitars, pianos, cellos, and vocals keep their natural weight without picking up much thickness.
A lean, tidy lower-mid keeps the mix from ever feeling bloated or congested. Male voices keep their natural heft but never tip into chesty thickness.
When you go up into the upper midrange, there’s a subtle lift that sneaks in that enhances the presence and clarity of female vocals and instruments.

T+A Symphonia streaming receiver Review
November 29, 2025 Comments Off on T+A Symphonia streaming receiver Review
https://www.stereophile.com/content/ta-symphonia-streaming-receiver
Herford, T+A’s home town, is close to Hamelin, the place immortalized in the fairy tale of the Pied Piper, whose music was literally impossible to resist. That’s fitting. With its crisp dynamics, taut, brawny bass, and feather-light treble detail, the Symphonia drew me in, unfailingly. It delivers way more audiophile gravitas than its size suggests. Although it lacks the excellent built-in CD player and the balanced connections of the bigger R 2500 R, the Symphonia is just as powerful and leaves surprisingly little on the table. It’s a miniature Meisterstück that should make the shortlist for Stereophile‘s Component of the Year
Footnote 1: Well, almost. This coinage comes from a droll little lexicon called Schottenfreude, by Ben Schott, in which the author proposes clever neologisms for phenomena that Germans should have a word for but don’t. The immodest length of the imagined compound words is part of what makes them funny—but of course the expanse of letters is also a feature (or a bug) of actual German. As Mark Twain wrote in “The Awful German Language,” from A Tramp Abroad: “These things are not words, they are alphabetical processions.”

Roon Nucleus One $499 Review
November 29, 2025 Comments Off on Roon Nucleus One $499 Review
https://www.audiophilia.com/reviews/2025/9/24/roon-nucleus-one
The best compliment I can give about the Roon Nucleus One (USD 499.99) is that it’s like my morning coffee—I start my day with it, find it comforting to take it with me anywhere, and it really gives me a boost in my music playing throughout the day. Not only do I recommend it, I think it should be purchased even before other needed components, at least that’s what I’m telling my friends. It really is that important in your setup, especially ease of use. It’s not essential to have one to enjoy the Roon experience, but every update, every moment you want to access Roon, it’s the best way to do it. For me, a must-have component. Very highly recommended.

Glass – Perfect8 Transparent Cabinet
November 29, 2025 Comments Off on Glass – Perfect8 Transparent Cabinet
Dynaudio Contour 20 Black Edition loudspeaker $8000 Review
November 28, 2025 Comments Off on Dynaudio Contour 20 Black Edition loudspeaker $8000 Review
https://www.stereophile.com/content/dynaudio-contour-20-black-edition-loudspeaker
I started my critical listening by playing the diagnostic tracks I created for the various Stereophile Test CDs (footnote 2). The 1/3-octave warble tones were cleanly reproduced down to the 80Hz band. The 63Hz tone was slightly lower in level, the 50Hz and 40Hz tones slightly higher in level. The 32Hz tone was boosted by my room’s lowest-frequency mode. I couldn’t hear the 20Hz tone. The half-step–spaced tonebursts spoke cleanly and evenly from 4kHz down to 32Hz. The lower-frequency tonebursts and warble tones sounded clean, with no “doubling” (second-harmonic distortion), and there was no wind noise from the port. Listening with a stethoscope to the enclosure’s sidewalls while these test tones played, I could hear some resonances in the octave between 250Hz and 500Hz.

Topping D900 DAC Review
November 28, 2025 Comments Off on Topping D900 DAC Review
Such performance underscores how critical the DAC is in the signal chain. Regardless of how refined the amplification or loudspeakers may be, a compromised converter upstream will veil information and restrict dynamics. The D900 demonstrates the opposite effect: by keeping distortion and noise below audibility, it allows every subsequent stage to work at its best. Listeners may find familiar recordings yielding new levels of intimacy and realism, not because of any editorial “voicing,” but because the DAC is stepping out of the way and letting the source material speak for itself.
For those who still question whether digital playback has reached maturity, the D900 offers a persuasive answer. Topping has combined superb engineering discipline with innovative decoding technology, and the result is a converter that competes with units costing several times as much. The D900’s fine detail retrieval is spectacular, its noise performance exemplary, and its overall contribution to system fidelity impossible to overstate. As the essential bridge between digital media and the analog world, we hear, the DAC deserves as much attention as any amplifier or transducer. With the D900, Topping has proven that this attention can pay extraordinary dividends.

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