Dan D'Agostino: I took the best parts of the Momentum's more sophisticated and complex circuitry and put them in the Progression, without using the same high parts count. Each stage of the Momentum's gain amplifier is separate, with input stage and driver stages on separate rails. All of the…
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To accompany my review of the Dan D'Agostino Master Audio Systems Progression monoblock amplifier elsewhere in this issue, I talked to Dan D'Agostino about the amplifier's design. I started by asking him what were some of the major differences between the Momentum and the Progression monoblocks?
Multichannel MQA again, from April 2018 (Vol.41 No.4):
"Not MQA again!" I'm sure some of you will say, regardless of where you stand on it. The loud debate is often less about how MQA actually sounds and works than about opinions and, to an alarming degree, charges of dishonesty and bias. While Stereophile's John Atkinson and Jim Austin continue to strive to rise above all that, all I want to know is what value MQA might have for my own enjoyment of music.
This is not my first stab at this: In the May 2017 Stereophile I both recounted my long-ago first exposure to MQA, which…
The 2018 audio show season is about to start and it's not just Stereophile's coverage of high-end audio shows—which has taken a leap forward with the inclusion of Jana Dagdagan's binaural videos—that's changing. The shows themselves are on the move.
Take the free Montréal Audio Fest (March 23–25, Hotel Bonaventure Montréal, Quebec). Exhibitors are invited to present systems for under $5000 in addition to their preferred systems, and, in an attempt to attract visitors aged 18–35, are encouraged to play music from video-game soundtracks. In addition, musicians will perform live some of the…
Editors' Choices of 2017
Audiodesksysteme Gläss Pro Vinyl Cleaner ($4199)
Without playing a note, the Audiodesksysteme Gläss Pro Vinyl Cleaner rocked my listening world. This wonderfully designed car wash for LPs accomplishes far more than I expected: reduction in noises of all kinds, and a magical lifting of yet another veil from the music. Brilliant!—Sasha Matson
Bang & Olufsen BeoLab 90 loudspeaker & Kii Audio Three loudspeaker (Joint Award) ($84,990/pair & $13,255/pair)
These remarkable products prove that the traditional loudspeaker paradigm has…
Every product listed here has been reviewed in Stereophile. Everything on the list, regardless of rating, is genuinely recommendable.
Within each category, products are listed by class; within each class, they're in alphabetical order, followed by their price, a review synopsis, and a note indicating the issues in which the review, and any subsequent follow-up reports, appeared. "Vol.44 No.9" indicates our September 2021 issue, for example. "WWW" means the review is also posted online.
Stereophile's Recommended Components list is concerned mainly with products available in the US…
I'm writing this one week after returning from Schaumburg, Illinois, where I attended my first real audio show since the Florida Audio Expo in early 2020, just as the pandemic was starting to gain momentum. Everyone I talked to was hopeful, but no one could predict what attendance would be like or what people's attitudes would be.
There were a few glitches, mainly logistical: Shipments didn't arrive or arrived damaged. One exhibitor had to carry an integrated amp to the show on his lap, first on a bus and then on a plane. (I didn't think to ask: Did the amplifier fit in the overhead bin…
The "High-End Audio: Regaining the High Ground" panel at the 2012 RMAF (from right to left): Ken Kessler, Roy Hall (Music Hall), Michael Fremer, Kathy Gornik (Thiel), Peter McGrath (Wilson), and Alan Sircom (HiFi Plus). (Photo: Art Dudley)
Analogplanet.com covered new products exhibited at the 2012 Rocky Mountain Audio Fest in Denver last October (Stereophile's full coverage can be found here); in this month's column I'll comment on the show generally, and specifically on two seminars.
RMAF's growth over the past few years has been phenomenal. This year's attendance appeared to be…
Every product listed here has been reviewed in Stereophile. Everything on the list, regardless of rating, is genuinely recommendable. Occasionally we get complaints from manufacturers who object to being included in, say, Class B. That's their error: Inclusion in Class B is a significant honor.
Within each category, products are listed by class; within each class, they're in alphabetical order, followed by their price, a review synopsis, and a note indicating the issues in which the review, and any subsequent follow-up reports, appeared. "Vol.48 No.9" indicates our September 2025 issue,…
Sidebar 3: Measurements
Nick Doshi, accompanied by Jessie Bentley of Virginia dealer Command Performance AV, picked up the Doshi Evolution Stereo amplifier from Ken Micallef's Greenwich Village apartment and delivered it to me in Brooklyn. They carefully installed the eight numbered Electro-Harmonix 6CA7-EH output tubes, then Nick briefed me on his design philosophy and how to operate the various buttons and switches. As I did with the similar-looking Evolution Monoblock amplifier that Jason Victor Serinus reviewed in May 2021, I left the amplifier powered up for 45 minutes before I…
Learning how to use the wheel didn't take long, and the inconvenience of having to walk over to the MU1 wasn't a problem given that almost all the operations it enables are "set'n'forget."
Since I purchased the review sample, along with a lifetime subscription to Roon, the Roon Labs Nucleus+ music server ($2559) has been my primary source for digital music. I have been using it with network-connected D/A processors that can act as a Roon endpoint, like the PS Audio DirectStream and MBL N31. I am currently without a NAS drive, so Roon accesses my music library via an internal drive I…