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IsoAcoustics Reveal Every Detail
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Equipment Reviews

Ultra Audio's site platform was changed in August 2010. For equipment reviews previous to that, use this link to transfer to the old site.

Esoteric K-07X SACD/CD Player/DAC

Written by: Tom Mathew
Created: 15 January 2016

Reviewers' ChoiceI’ve been reading a compelling self-improvement bestseller by Japanese cleaning consultant Marie Kondo: The Life-Changing Magic of Tidying Up: The Japanese Art of Decluttering and Organizing. Kondo makes a simple but powerful claim: a dramatic reorganization of your outer world can result in correspondingly profound changes in your inner world. Declutter your life and you’ll feel better, she promises. The path to reorganization, however, involves a ruthlessly deliberate shedding of some of our things. Kondo encourages us to keep only what brings us joy, and to get rid of everything that doesn’t.

Read more …

Moon by Simaudio Evolution 850P Preamplifier

Written by: Jeff Fritz
Created: 01 January 2016

Reviewers' ChoiceI’ve had a love/hate relationship with the analog preamplifier. For audiophiles like me, with all-digital systems, the allure of going preampless is strong. There are many digital-to-analog converters on the market, at all different price points, that offer remote switching of digital sources and have quite transparent volume controls. These DACs, in effect, have become the digital preamp -- perfect for those who don’t need analog switching. Bridging the gap between these full-featured DACs and the all-analog preamplifier are analog preamps with digital input sections -- essentially, a preamp with a built-in DAC. With such components, you have the choice of analog or digital inputs, which offers tremendous flexibility that can accommodate almost any system configuration. The downside is that upgrading your DAC also means replacing your analog preamp.

Read more …

Stanford Research Systems PERF10 Rubidium Audio Clock

Written by: Howard Kneller
Created: 15 December 2015

Reviewers' ChoiceIn audio, a clock determines the times at which digital audio samples are converted into analog. Messing up this timing condemns the music to digital hell, where jitter causes distortion and harshness in music. Thomas Hobbes said that “Hell is truth seen too late.” For audio purposes, I suggest that hell is truth seen too early or too late.

Think back to the days of hand-cranked film viewers. Because it was extremely difficult to achieve a constant playback speed, the films looked jerky, unnatural, jittery. A similar phenomenon occurs when the conversion of a digital to an analog signal is imperfectly timed.

Read more …

Wadia di322 Digital-to-Analog Converter

Written by: Jeff Fritz
Created: 01 December 2015

Reviewers' ChoiceThese days, to sell their products, makers of high-end audio gear must have a hook: something that makes the consumer choose their widget over competing widgets. Maybe that hook is a famous designer, or a company history long established and revered by audiophiles, or performance and/or build quality that far exceed what might be expected for the price -- or just clever marketing. But whatever the hook, it won’t work if it’s a secret. Companies have to get the word out.

Read more …

Reference 3A Nefes Loudspeakers

Written by: Jason Thorpe
Created: 15 November 2015

It’s got to be the best gig in the world, or the worst.

In my 15 years of reviewing I’ve dealt with companies large and small. The big guys -- Audio Research, MartinLogan, Monitor Audio -- can afford a significant level of detachment from their products. They have marketing guys, shipping guys, and manufacturing departments. Each step in the production of one of their products is insulated from the next, and by the time a component arrives in my listening room it’s been manhandled by a dozen people -- maybe more.

Read more …

Ayre Acoustics KX-5 Twenty Preamplifier

Written by: Aron Garrecht
Created: 01 November 2015

Reviewers' ChoiceEarlier this year, I reviewed Ayre Acoustics’ stellar KX-5 preamplifier ($7950 USD, discontinued). It was the quietest preamplifier I’d ever reviewed, and set the stage for many good things to come, with one exception: having to give it back. Difficult as it was, I parted with the KX-5 -- only to be asked, a few months later, if I’d be interested in reviewing its successor, the KX-5 Twenty. My response was an immediate yes.

But seeing a new version of the KX-5 only 18 months after the release of the original took me a bit aback. Ayre is one of the few audio companies that avoids the economic temptation to make a few minor internal changes, add a new faceplate and a higher price tag, and call the result “all new!” Instead, they claim that they don’t release a new model or version until what they do release is a considerable improvement on its predecessor(s). This has usually involved revising circuits, upgrading parts, and sometimes redesigning all of the circuitry from the ground up. But Ayre had rarely, if ever, replaced a product -- especially one that had so well established itself -- as quickly as it did the KX-5. What gives?

Read more …

Nordost Norse 2 Tyr 2 Speaker Cables, Interconnects, and Power Cords

Written by: Jason Thorpe
Created: 15 October 2015

Seems you can’t turn around these days without bumping into a cable company or tripping over a coil of their wire. There’s good reason cable manufacturers proliferate: the markup must be astronomical. Buy some wire, wrap it in a nice sheath, terminate with extreme prejudice, and off to market. What a gig!

A few cable companies don’t work that way. Wire isn’t always just wire, and in recent years there’s been some honest innovation in a field that, on the face of it, looks simple: no moving parts.

Read more …

Ayre Acoustics MX-R Twenty Mono Amplifiers

Written by: Peter Roth
Created: 01 October 2015

Reviewers' ChoiceBeauty and brains

“I have a head for business and a bod for sin!”

Those words from Tess McGill (Melanie Griffith) caught Jack Trainer (Harrison Ford) hook, line, and sinker, and propelled the remainder of Working Girl, Mike Nichols’s romantic comedy-drama of 1988 -- the intoxicating sentiment stated, appropriately, in a bar. The allure of intellectual prowess coupled with emotional hedonism is great, not only because it is elusive but because it promises to satisfy so completely. It’s hard enough to find one of those qualities; to find both together is exponentially more difficult. Nonetheless, the combination has been heroically sought across many disciplines, including audio reproduction.

Read more …

Aqua - Acoustic Quality La Voce S2 Digital-to-Analog Converter

Written by: Michael Wright
Created: 15 September 2015

When a SoundStage! reviewer asks editor-in-chief Jeff Fritz if he has anything interesting he’d like reviewed, that reviewer never knows what Jeff will say. Jeff said that there was an opportunity to review La Voce S2, a digital-to-analog converter from Aqua - Acoustic Quality (AAQ). I’d never heard of Aqua - Acoustic Quality, and didn’t know if I’d enjoy or regret reviewing their new DAC. But I thought it might be an interesting adventure.

Read more …

Magico Q7 Mk II Loudspeakers

Written by: Jeff Fritz
Created: 01 September 2015

Reviewers' ChoiceI started turning away from the whole notion of declaring something “the best” about the time I shut down my column, “The World’s Best Audio System.” Don’t get me wrong: The writings and events that made up the TWBAS series were enlightening -- I was able to learn from lots of talented industry folks, and assembled several state-of-the-art audio systems in my listening room, the Music Vault. In terms of establishing a personal audio reference, this was invaluable, and no doubt made me a better reviewer. But there’s a futility in searching for the universal “best” -- at least, in high-end audio. It’s an argument that’s never settled, by me or by anyone else.

Read more …

  1. Highend-AudioPC AudiophileOptimizer Computer Audio Software
  2. Soulution 711 Stereo Amplifier
  3. Rogue Audio RP-5 Preamplifier
  4. Moon by Simaudio Evolution 760A Stereo Amplifier
  5. AudioQuest Cinnamon Ethernet Cable
  6. Spatial Audio Hologram M1 Turbo Loudspeakers
  7. Audio Research Reference 10 Preamplifier
  8. Bryston Middle T Loudspeakers
  9. Vienna Acoustics Imperial Liszt Loudspeakers
  10. Exogal Comet Digital-to-Analog Converter
  11. NAD Masters Series M22 Stereo Amplifier and M12 Preamplifier-DAC
  12. Ascendo C6 Loudspeakers
  13. Hegel Music Systems HD12 Digital-to-Analog Converter
  14. Esoteric Grandioso P1 SACD/CD Transport, Grandioso D1 Mono Digital-to-Analog Converters, and G-01 Master Clock Generator
  15. Blue Circle Audio BC60X1 Power Conditioner
  16. Octave Audio V 110 Integrated Amplifier
  17. JL Audio CR-1 Active Subwoofer Crossover
  18. fo.Q Damping Products and AB-4045 Audio Board Isolation Platform
  19. Devialet 400 Mono Integrated Amplifier-DACs
  20. Audio Research VSi75 Integrated Amplifier
  21. Triangle Magellan Cello Loudspeakers
  22. Audience Au24 SE powerChords, Interconnects, and Speaker Cables
  23. Zanden Audio Systems 120 Phono Stage
  24. Grimm Audio LS1 Loudspeakers and LS1s Subwoofers
  25. Aurender W20 Music Server
  26. Transfiguration Phoenix S Phono Cartridge
  27. M2Tech Young DSD Digital-to-Analog Converter
  28. Audio Research SP20 Preamplifier
  29. Magico S3 Loudspeakers
  30. Synergistic Research High Frequency Transducer (HFT) and Frequency Equalizer (FEQ) Room Treatments and XOT Crossover Transducer
  31. Ayre Acoustics KX-R Twenty Preamplifier
  32. Resonessence Labs Invicta Mirus Digital-to-Analog Converter
  33. Vivid Audio Giya G4 Loudspeakers
  34. Aurender X100L Music Server
  35. Sonus Faber Olympica I Loudspeakers
  36. Clarity Cable Organic Speaker Cables, Interconnects, Digital Interconnect, and Vortex Power Cord
  37. EgglestonWorks Nine Signature Loudspeakers
  38. Light Harmonic LightSpeed USB Cable
  39. David Berning Company ZH-230 Stereo Amplifier
  40. Esoteric Master Sound Works C-02 Preamplifier
  41. Vivid Audio Oval V1.5 Loudspeakers
  42. Daedalus Audio Argos v.2 Loudspeakers
  43. Octave Audio V 70 SE Integrated Amplifier
  44. KR Audio VA910 Mono Amplifiers
  45. T+A Criterion TCD 110 S Loudspeakers
  46. Birch Acoustics Raven Loudspeakers
  47. Monitor Audio Platinum PL200 Loudspeakers
  48. Essential Sound Products Essence Reference-II Power Cords and Reference-II Power Distributor
  49. JE Audio Dyad S400 Stereo Amplifier
  50. Dynamique Audio Celestial Speaker Cables, Zenith Interconnects, Firelight USB, and Infinite Power Cables
  51. Music Culture Elegance MC 501A CD Player-DAC
  52. KR Audio VA340 Mk.II Integrated Amplifier
  53. PMC IB2i Loudspeakers
  54. Cabasse Pacific 3 Loudspeakers
  55. Sonus Faber Venere 3.0 Loudspeakers
  56. Hegel Music Systems HD25 Digital-to-Analog Converter
  57. EMM Labs DAC2X Digital-to-Analog Converter
  58. Esoteric P-02 SACD/CD Transport and D-02 Digital-to-Analog Converter
  59. Vivid Audio Giya G3 Loudspeakers
  60. PBN Audio Scan-Speak B741 Loudspeakers
  61. Blue Circle Audio BC109 Preamplifier
  62. Dynaudio Confidence C2 Signature Loudspeakers
  63. First Watt J2 Stereo Amplifier
  64. Simaudio Moon Evolution 810LP Phono Stage
  65. Boulder Amplifiers 1060 Stereo Amplifier
  66. SMc Audio VRE-1C Reference Preamplifier
  67. Blue Circle Audio NSL Stereo Amplifier
  68. Audio Research Reference 250 Mono Amplifiers
  69. Von Schweikert Audio VR-35 Export Deluxe Loudspeakers
  70. Vitus Audio Signature SM-010 Mono Amplifiers
  71. YG Acoustics Kipod II Signature Loudspeakers
  72. Vandersteen Audio Treo Loudspeakers
  73. Magico Q1 Loudspeakers
  74. Hemingway Audio Prime Reference Mk.II Speaker Cables, Interconnects, and Power Cords
  75. Synergistic Research Element Copper, Tungsten, and Copper-Tungsten-Silver Interconnects and Speaker Cables
  76. Crystal Cable Arabesque Mini Loudspeakers
  77. EgglestonWorks Fontaine Signature Loudspeakers
  78. AudioQuest Diamond and Carbon FireWire 800 Cables
  79. Artos Audio Sunrise Loudspeakers
  80. Esoteric I-03 Integrated Amplifier
  81. NuForce DAC-9 Digital-to-Analog Converter
  82. Audience adeptResponse aR6-TS Power Conditioner
  83. EAR MC 4 Step-Up Transformer
  84. PBN Audio Montana InnerChoic Liberty Loudspeakers
  85. Simple Design Sonore Music Server
  86. Herron Audio VTSP-3A Preamplifier
  87. Copland CDA825 CD Player
  88. TW-Acustic Raven 10.5 Tonearm
  89. Artisan Silver MC Phono Stage
  90. MSB Technology Universal Media Transport
  91. Well Tempered Lab Amadeus Turntable
  92. Purity Audio Design Purity Reference Preamplifier
  93. Silverline Audio Sonatina Mk.IV Loudspeakers
  94. Ayre Acoustics DX-5 Universal A/V Engine
  95. Coda Technologies 15.0 Stereo Amplifier
  96. LessLoss Firewall Power Conditioner and DFPC Signature Power Cable
  97. Miyajima Laboratory Premium BE Mono Cartridge
  98. Magnum Dynalab MD 309 Integrated Amplifier
  99. Audio Research Reference 5 Preamplifier
  100. VAC Phi 200 Stereo Amplifier
  101. Ortofon Cadenza Mono Phono Cartridge
  102. Ultrasone Edition 8 Headphones
  103. YG Acoustics Carmel Loudspeakers
  104. Atma-Sphere Music Amplifier M-60 Mk.3.1 Mono Amplifiers
  105. AudioPrism Ground Control Grounding Cables
  106. Nordost Norse Frey Interconnects and Speaker Cables
  107. Ayre Acoustics KX-R Preamplifier and MX-R Mono Amplifiers
  108. Raysonic SP-300 Integrated Amplifier
  109. Synergistic Research Galileo Universal Interconnect and Speaker Cells, and Mini Power Couplers
  110. VAC Renaissance Mk.3 Preamplifier
  111. Accustic Arts Reference Tube-DAC II SE DAC and Reference Drive II CD Transport
  112. Silent Running Audio VR fp isoBASE Equipment Platforms
  113. EAR 890 Stereo Amplifier

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210x600 T+A R Criterion S (20240601)
Dynaudio Contour 20BE
Simaudio
Simaudio
Vitus Audio
Vitus Audio

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