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final Sonorous X Closed Back Headphones


The final Sonorous X Closed Back Dynamic Headphones are the unmatched audiophile enigma of the decade. This cost-no-object luxury model of S'Next Co. Ltd. of Japan is both: 1) The most scientifically advanced, meticulously-complex, exquisitely-designed, delivering superior imaging and soundstaging, with the ne plus ultra definition I have ever heard; and, 2) have received a Rodney-Dangerfield-styled series... Read More »


Analysis Plus Silver Apex Cables


Analysis Plus is essentially an engineering firm that has chosen audio manufacturing as one of the areas to focus their resources. What I find interesting is that the fundamental concepts and design geometry that Mark Markel had identified years ago has remained essentially unchanged within their product line. In today's popular culture, a large cross-section... Read More »


World Premier Review of IAMP - Incredible AC Purifier Power Cord by Unique Innovation Technology


Ever since I discovered the ultra-high-value audiophile cables and now power cords from Unique Innovation Technology (UIT), my audiophile life has been altered forever. Two years ago I met the UIT folks, headed by the extraordinary Mitch Ko, at the LA Audio Show, and their suggestion that I try their interconnects with a pure silver module... Read More »


Silva Film Music and the City of Prague Philharmonic Orchestra


In Positive Feedback Issue 31 (May/June 2007) I reviewed three CDs from Silva Film Music (HERE). Silva Film licenses the rights to film scores and re-records the music using the City of Prague Philharmonic Orchestra. In my review of 2007 I was impressed by the quality of the performances, the excellent recording and mastering that results in... Read More »


Ronn McFarlane, The Celtic Flute


The lute is an ancient instrument with its forebearers having been traced back to 3100 BCE in Mesopotamia. Though a popular instrument during the Middle Ages, the lute reached its zenith during the Renaissance. While gradually falling out of favor after the Renaissance, the lute was still being widely used during the Baroque period. By... Read More »


Synergistic Research Atmosphere X Euphoria (Level 3) Interconnects and Speaker Cable


While sitting in the Synergistic Research room at Axpona 2018 this year, what I observed proved to be quite insightful but it also just verified what I have seen and heard so many times before. Ted Denney (Synergistic Research CEO and Chief Designer) had the audience's focused attention as the session began. Sitting off to... Read More »


AV RoomService EVPs (Equipment Vibration Protectors): Outstanding Equipment Isolation for Systems at Any Price Point


When this review offer came from Norman Varney's company, AV RoomService, Ltd., I knew Norman from the Facebook experience, and I knew that he worked with custom audio installations that appeared to me to be fairly high-end. He seemed to me to be a really nice, knowledgeable guy, and I enjoyed seeing photos of some... Read More »


Paavo Järvi Conducts Bruckner's Ninth


Paavo Järvi conducts Bruckner's Ninth. BRUCKNER: Symphony No. 9 in D minor. Frankfurt Radio Symphony Orchestra/Paavo Järvi. RCA Red Seal 88697542572.  TT: 65.39 The notion of Bruckner's music as thick and heavy persists in some circles, but the earliest recorded evidence from the composer's prominent exponents—think Furtwängler, Klemperer, Horenstein —belies the stereotype. Those conductors projected the music in... Read More »


Sumiko Moonstone Moving Magnet Phono Cartridge


As I just retired and find myself back full time to the second love of my life (the first being my beautiful wife of 30 years, Paula of course) and that is a lot of dedicated listening and reviewing. Upon throwing my hat back in the ring, almost immediately I was offered a chance to... Read More »


Argento Audio Flow Phono Cable - Escape to the Old World


Now that the 2018 classical concert season has drawn to a close, I'd like to share a few of my most contentious observations: 1) the best European orchestras maintain an edge over those from the New World; 2) there are some surpassingly fine ensembles among the next-gen of string quartets; and 3) something must be... Read More »


Furutech NCF Booster Performance-enhancing Connector and Cable Holder and NCF Booster Signal Cable Riser and RCA/XLR Stabilizer


Marc Phillips has been doing music reviews for Positive Feedback for quite a while now. In the interest of full disclosure, he is also a distributor (Colleen Cardas Imports), and has a separate life selling fine audio gear. You'll want to keep this in mind as you read his comments...but his evaluation dovetails exactly with my... Read More »


Luxman L-507uXII Integrated Amplifier


Luxman Corporation of Japan celebrated its 90th anniversary in 2015. In late 2017 into early 2018, the high-end audio manufacturer introduced several new models to its already extensive lineup of preamplifiers, amplifiers, integrated amplifiers, source components, and cables, and established its own distribution in the United States. One of the introductions was the L-507uXII integrated amplifier,... Read More »


The Fuuga Cartridge Moving Coil Cartridge, Part 1: A Heavyweight Contender


Cartridges and jazz musicians share at least one thing in common. Ask five artists to play a song and each performer will give a slightly different interpretation. A little more swing. A little behind the beat. A little slower or faster tempo. Improvising differently. Cartridges (and for that matter arms and tables) are no different... Read More »


Friday Night In San Francisco by John McLaughlin, Al Di Meola, and Paco De Lucia


Friday Night In San Francisco  - John McLaughlin, Al Di Meola, and Paco De Lucia Back Story Impex Records has now reissued Friday Night In San Francisco on 180 Gram Numbered Limited Edition vinyl. Only 3000 copies will be made available for sale. Remastered by Bernie Grundman and Bob Donnelly from the original master tapes,... Read More »


Notes of an Amateur: Vivaldi, Bach, Ferneyhough, Auerbach, and Vasks


Vivaldi, Sonatas for Cello and Basso Continuo,  Jean-Guihen Queyras, cello. Harmonia Mundi. It has been quite a while since we've had recordings of this seldom heard, truly engaging music. Christophe Coin did it well in 1989 for L'oiseau Lyre, Susan Sheppard did it fine that same year with L'école d'Orphee for CRD; and then there... Read More »


The New Apartment Lounge: Musical Fidelity's Scrumptious M6 Encore 225 Integrated Amplifier  


A Distinguished Legacy My use of, and admiration for, the expansive range of audio products from British manufacturer Musical Fidelity (recently purchased by none other than Heinz Lichtenegger, the director of Pro-Ject Audio Systems and a close friend of retiring Musical Fidelity head Antony Michaelson) dates back almost 20 years. In the late 1990s I... Read More »


Hijiri HCI-R10 Interconnects and HCS-25 Loudspeaker Cables


Audio companies usually showcase their best, and also the most expensive products. These present company's full potential, its best techniques and technologies, and can also appear as sort of "totem" driven into the ground occupied by tribes worshiping high quality sound. It is no different with the Japanese brand 聖 Hijiri, belonging to the Combak... Read More »


Lee Hazlewood's Woodchucks, Cruisin' for Surf Bunnies


Light in the Attic Records LITA169, colored LP $22, LP $20, CD $12, available at lightintheattic.net "Lee Hazlewood wasn't a cowboy, but he sure played the part. He never took LSD but made some far-out, psychedelic records, and he sure as shit didn't surf…but he had a brief yet prolific output of surf music. The... Read More »


Peter Ledermann is the Artisan Smithy of Sound, Part 2: The New Soundsmith Zephyr Mk III Phonograph Cartridge!


If you read Part 1 of this Soundsmith review series in Positive Feedback Issue 98 (HERE), where I wrote about the new Carmen Mk II phonograph cartridge, you know that I found the Carmen Mk II to be one of the most musically enjoyable phonograph cartridges I have ever written about. The Carmen Mk II... Read More »


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