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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.

Estelon X Diamond Mk II Loudspeakers

Written by: Jeff Fritz
Created: 01 April 2021

Reviewers' ChoiceTo many audiophiles, this one included, luxury loudspeaker maker Estelon has largely been a mystery. What I knew about Estelon before this review—and I follow the upper end of the hi-fi market closely—was entirely superficial: They’re based in Tallinn, Estonia, in northern Europe; before COVID-19, they displayed their wares at Munich’s annual High End show; the shapely forms of their speakers are often described as elegant; and those speakers are not inexpensive.

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Audio Research Reference 6SE Preamplifier

Written by: Aron Garrecht
Created: 15 March 2021

Reviewers' ChoiceA little less than two years ago, I reviewed Audio Research’s Reference 6 preamplifier ($15,000, discontinued; all prices USD). Little more than a day of listening later, I’d decided I wouldn’t be sending my review sample back, and ever since, the Ref 6 has been my reference preamp. Asked to review the Ref 6’s successor, the Reference 6SE ($17,000), my answer was a no-brainer: Yes.

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Zesto Audio Andros Deluxe II Phono Stage

Written by: Jeff Sirody
Created: 01 March 2021

It’s not imperative for me that an audio component be visually flashy or fancy. I still love the clean, classic simplicity of, say, the basic burnished metal faceplate of a vintage Conrad-Johnson or Audio Research model—no knobs or buttons other than a power switch. That said, there’s something about watching the myriad meters of my reference system of McIntosh Laboratory amplification components dancing in a blue glow—my experience of the sound is enhanced by the system’s visual appeal.

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Esoteric Grandioso K1X SACD/CD Player-DAC and Grandioso PS1 Power Supply

Written by: Howard Kneller
Created: 15 February 2021

Reviewers' ChoiceIn December 2017, I reviewed and then bought Esoteric’s one-box Grandioso K1 SACD/CD player and digital-to-analog converter ($31,000, discontinued; all prices USD). That’s a lifetime ago in the fast-paced world of digital audio, but some things haven’t changed—for one thing, as evinced by the K1’s successor, the Grandioso K1X ($36,000), Esoteric is sticking with the format of 4.75″ shiny silver discs. From the company known for having virtually perfected the SACD/CD transport, that’s no surprise.

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Classé Audio Delta Mono Amplifiers

Written by: Aron Garrecht
Created: 01 February 2021

Reviewers' ChoiceMike Viglas and David Reich founded Classé Audio in 1980. Their first product, the DR-2 class-A power amplifier, quickly gained notoriety for its ability to convincingly drive loudspeakers to unexpectedly high volume levels despite its diminutive power-output specification of 25Wpc. To this day, the success and sound quality of the DR-2 serve as hallmarks for every Classé product since.

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Sonus Faber Heritage Collection Maxima Amator Loudspeakers

Written by: Hans Wetzel
Created: 15 January 2021

In his inimitably matter-of-fact fashion, Magico’s Alon Wolf once told me that “We make loudspeakers, not furniture.” The statement seemed to imply that, for him, form must always follow function. I suspect that the philosophies of most discerning audiophiles are similar. That’s one reason why ultra-high-end systems are often found in dedicated rooms replete with treatments, cable lifters, and fastidious attention paid to ensure that those systems are performing optimally, no matter the imposition. Everything else is subordinated to the pursuit of maximum sound quality.

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Vinnie Rossi L2i Signature Edition Integrated Amplifier-DAC

Written by: Hans Wetzel
Created: 01 January 2021

When I unboxed Vinnie Rossi’s new L2i Signature Edition integrated amplifier-DAC, two things stood out: 1) It’s good-looking and extremely well built. 2) I didn’t see how it could be worth $22,490 (as reviewed, with optional DAC module; all prices USD). It wasn’t until I’d spoken with founder-owner-designer Vinnie Rossi himself that I began to appreciate what I’d been sent. (See my profile of Rossi and his company.)

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Linear Tube Audio Z40 Integrated Amplifier

Written by: Hans Wetzel
Created: 15 December 2020

So you’re on the hunt for an integrated amplifier in the mid- to high four figures. There are many options, and in some ways it would be hard to end up with one that wasn’t at least very good. But you’re a discerning shopper, with a refined taste who can’t be bothered with any of the run-of-the-mill, high-powered, class-AB options littering the audioscape. Class-D amps are out due to their lack of character. Most tubed amps require that the owner bias and occasionally replace the tubes -- and what are you, a mechanic? No, you’d rather be listening. Finally, you go weak in the knees when you see a product proudly emblazoned with “Made in the USA.”

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Audio Research Reference 160S Stereo Amplifier

Written by: Jeff Fritz
Created: 01 December 2020

When you’re sitting in front of the Audio Research Reference 160S stereo amplifier ($22,000 USD), it’s hard not to see the appeal. Its GhostMeters are a brilliant design touch that modernizes the look of a metered power amplifier. So named because their needles appear at the front of an otherwise transparent pane of acrylic graduated in watts, the GhostMeters let the user simultaneously watch the needles dance along with the amp’s power output while peering past the meters to the glow of eight KT150 output tubes. Listening to music over a high-end stereo system can delight more than one sense -- if this sort of visual delight supports your pleasure in listening, then a plain ol’ slab of thick aluminum just won’t do.

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Rotel Michi M8 Mono Amplifiers

Written by: Aron Garrecht
Created: 15 November 2020

Reviewers' ChoiceIn 1993, Rotel released the first three models in what became their critically acclaimed Michi line of electronics: the RHB-10 power amplifier, the RHC-10 passive controller, and the RHQ-10 equalizer. Rotel claimed that the Michis represented the very best they then had to offer in terms of design, technology, and sound quality. Over the next few years Rotel released five more Michi models, including a smaller power amplifier (RHB-5), an active preamplifier (RHA-10), an FM tuner (RHT-10), and a mammoth CD player (RHCD-10). The Michis were easily identified by their deep-gray cases of heavy-gauge steel, complemented by meticulously finished side panels of Japanese redwood -- but it was the many progressive technologies implemented in each that made them special.

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  1. Black Cat Cable Trøn USB and Trøn Kløk Digital Links
  2. Dynaudio Contour 20i Loudspeakers
  3. Mola Mola Tambaqui Digital-to-Analog Converter
  4. Synergistic Research PowerCell SX Power Conditioner
  5. Focal Diablo Utopia Colour Evo Loudspeakers
  6. Gryphon Audio Designs Essence Stereo Amplifier
  7. Constellation Audio Inspiration Integrated 1.0 Integrated Amplifier
  8. Plinius Reference A-150 Stereo/Mono Amplifier
  9. dCS Bartók Digital-to-Analog Converter
  10. EMM Labs DV2 DAC-Preamplifier
  11. Wells Audio Commander Level II Preamplifier
  12. Audience frontRow Interconnects, Speaker Cables, and Power Cords
  13. McIntosh Laboratory C1100 Preamplifier
  14. Xavian Electronics Classic Quarta Loudspeakers
  15. Estelon YB Loudspeakers
  16. Simaudio Moon 700i v2 Integrated Amplifier
  17. Shunyata Research Hydra Alpha A12 Power Conditioner and Venom NR-V10 Power Cord
  18. Merrill Audio Jens Phono Stage
  19. Gryphon Audio Designs Zena Preamplifier
  20. EgglestonWorks Nico Evolution Loudspeakers
  21. Sonus Faber Olympica Nova III Loudspeakers
  22. Audience Au24 SX Interconnects and Speaker Cables
  23. McIntosh Laboratory MC1.25KW Mono Amplifiers
  24. Sonus Faber Heritage Collection Electa Amator III Loudspeakers
  25. Rockport Technologies Avior II Loudspeakers
  26. Theoretica Applied Physics BACCH-SP adio 3D Sound Processor
  27. PMC Fact Fenestria Loudspeakers
  28. GigaWatt PC-4 Evo+ Power Conditioner
  29. Luxman D-380 CD Player
  30. SGR Audio Model III Symphony Equipment Rack
  31. TAD Evolution One TX Loudspeakers
  32. McIntosh Laboratory MT10 Turntable
  33. Magico A3 Loudspeakers
  34. Merrill Audio Element 118 Mono Amplifiers
  35. Valve Amplification Company Master Preamplifier
  36. Constellation Audio Revelation Andromeda Phono Stage
  37. Audio Research Reference 6 Preamplifier
  38. Essential Sound Products MusicCord Pro Power Cord
  39. Gryphon Audio Designs Mojo S Loudspeakers
  40. Synergistic Research Galileo SX Interconnects, Speaker Cables, and IFT Jumpers
  41. Auralic Vega G2 Streaming DAC-Preamplifier
  42. Cocktail Audio X45Pro Music Server-DAC
  43. Luxman L-509X Integrated Amplifier
  44. Vivid Audio Kaya 45 Loudspeakers
  45. Audio Research Reference 160M Mono Amplifiers
  46. Weiss Engineering DAC501 Digital-to-Analog Converter
  47. EgglestonWorks Kiva Loudspeakers
  48. VPI Prime Signature Turntable
  49. AVM Ovation SD 6.2 Preamplifier-DAC-Streamer
  50. Shunyata Research Hydra Typhon QR Power Distributor
  51. Burmester Ambience BA71 Loudspeakers
  52. GIK Acoustics 2A Alpha Diffusor/Absorber Acoustic Panel
  53. Linnenberg Elektronik Telemann DAC-Preamplifier
  54. Top Wing Blue Dragon Phono Cartridge
  55. Simaudio Moon 888 Mono Amplifiers
  56. Synergistic Research SR25 Limited Edition Power Cord
  57. Balanced Audio Technology VK-53SE Preamplifier
  58. Sumiko Reference Starling Moving-Coil Phono Cartridge
  59. Tidal Piano G2 Loudspeakers
  60. ZYX Ultimate 4D-X MC Phono Cartridge
  61. European Audio Team E-Glo S Phono Stage
  62. Balanced Audio Technology VK-255SE Stereo Amplifier
  63. T+A Elektroakustik PA 3100 HV Integrated Amplifier
  64. Furutech NCF Booster Cable Holder
  65. Raidho Acoustics XT-5 Loudspeakers
  66. Waversa Systems WDAC3 Mk.II Digital-to-Analog Converter
  67. Rethm Maarga Loudspeakers
  68. Audience Au24 SX powerChord Power Cord
  69. McIntosh Laboratory MA9000 Integrated Amplifier-DAC
  70. VPI MW1 Cyclone Record-Cleaning Machine
  71. Esoteric Grandioso G1 Master Clock Generator
  72. Pro-Ject RPM 10 Carbon Turntable with 10cc Evolution Tonearm
  73. Esoteric Grandioso K1 SACD/CD Player-DAC
  74. Sonus Faber Homage Amati Tradition Loudspeakers
  75. TAD Micro Evolution One Loudspeakers
  76. Paradigm Persona 7F Loudspeakers
  77. Dynaudio Contour 60 Loudspeakers
  78. VAC Signature 200iQ Stereo Amplifier
  79. Synergistic Research Galileo UEF Speaker Cables, Interconnects, and IFT Jumpers
  80. Mytek Digital Brooklyn DAC-Phono Stage-Preamplifier-Headphone Amplifier
  81. Moon by Simaudio Evolution 860A Stereo Amplifier
  82. Esoteric K-05X SACD/CD Player/DAC
  83. Audio Physic Codex Loudspeakers
  84. Furutech FI-50 NCF Series Power Connectors and FP-TCS31 Alpha PC-Triple C Bulk Power Cord
  85. Vivid Audio Giya G1 Spirit Loudspeakers
  86. Audio Research Foundation DAC9 Digital-to-Analog Converter
  87. Vandersteen Audio Model Seven Mk.II Loudspeakers and M7-HPA Mono Amplifiers
  88. JPlay JCAT USB Card and USB Isolator
  89. Monitor Audio Platinum II PL300 II Loudspeakers
  90. Audiodesksysteme Gläss Vinyl Cleaner Pro
  91. Gryphon Audio Designs Antileon Evo Stereo Amplifier
  92. Symposium Acoustics Osiris Stealth Ultimate Equipment Rack
  93. Focus Audio Liszt Concerto Mono Integrated Amplifiers
  94. Magico MPod Support System
  95. Linear Tube Audio ZOTL40 Mk.II Stereo Amplifier
  96. Synergistic Research PowerCell 12 UEF SE Power Conditioner
  97. van den Hul Crimson Stradivarius Phono Cartridge
  98. Devialet Expert 1000 Pro Mono DAC-Integrated Amplifiers
  99. Audience adeptResponse aR6-TSSOX Power Conditioner
  100. Audio Physic Avanti Loudspeakers
  101. High Fidelity Cables CT-1 Ultimate Digital Link, Interconnects, Speaker Cables, and Power Cords
  102. Gryphon Audio Designs Diablo 300 Integrated Amplifier-DAC
  103. Constellation Audio Inspiration Stereo 1.0 Amplifier
  104. Kharma Elegance dB9-S Loudspeakers
  105. Ayre Acoustics AX-5 Twenty Integrated Amplifier
  106. Luxman EQ-500 Phono Stage
  107. fo.Q Modrate HEM-25 Pure Note Insulators
  108. Constellation Audio Inspiration Preamp 1.0 Preamplifier
  109. Zanden Audio Systems Model 3100 Preamplifier
  110. YBA Passion PRE550A DAC-Preamplifier
  111. Skogrand Cables Ravel Speaker Cables and Interconnects
  112. Soulution 560 Digital-to-Analog Converter
  113. Synergistic Research Atmosphere Level 4 Speaker Cables and Interconnects, Atmosphere Level 3 Power Cords, Grounding Block and HD Ground Cables
  114. Merging NADAC ST-2 Digital-to-Analog Converter
  115. Zanden Audio Systems AT-1 Acoustic Tubes and AP-1 Acoustic Panels
  116. Rockport Technologies Cygnus Loudspeakers
  117. Esoteric K-07X SACD/CD Player/DAC
  118. Moon by Simaudio Evolution 850P Preamplifier
  119. Stanford Research Systems PERF10 Rubidium Audio Clock
  120. Wadia di322 Digital-to-Analog Converter
  121. Reference 3A Nefes Loudspeakers
  122. Ayre Acoustics KX-5 Twenty Preamplifier
  123. Nordost Norse 2 Tyr 2 Speaker Cables, Interconnects, and Power Cords
  124. Ayre Acoustics MX-R Twenty Mono Amplifiers
  125. Aqua - Acoustic Quality La Voce S2 Digital-to-Analog Converter
  126. Magico Q7 Mk II Loudspeakers
  127. Highend-AudioPC AudiophileOptimizer Computer Audio Software
  128. Soulution 711 Stereo Amplifier
  129. Rogue Audio RP-5 Preamplifier
  130. Moon by Simaudio Evolution 760A Stereo Amplifier
  131. AudioQuest Cinnamon Ethernet Cable
  132. Spatial Audio Hologram M1 Turbo Loudspeakers
  133. Audio Research Reference 10 Preamplifier
  134. Bryston Middle T Loudspeakers
  135. Vienna Acoustics Imperial Liszt Loudspeakers
  136. Exogal Comet Digital-to-Analog Converter
  137. NAD Masters Series M22 Stereo Amplifier and M12 Preamplifier-DAC
  138. Ascendo C6 Loudspeakers
  139. Hegel Music Systems HD12 Digital-to-Analog Converter
  140. Esoteric Grandioso P1 SACD/CD Transport, Grandioso D1 Mono Digital-to-Analog Converters, and G-01 Master Clock Generator
  141. Blue Circle Audio BC60X1 Power Conditioner
  142. Octave Audio V 110 Integrated Amplifier
  143. JL Audio CR-1 Active Subwoofer Crossover
  144. fo.Q Damping Products and AB-4045 Audio Board Isolation Platform
  145. Devialet 400 Mono Integrated Amplifier-DACs
  146. Audio Research VSi75 Integrated Amplifier
  147. Triangle Magellan Cello Loudspeakers
  148. Audience Au24 SE powerChords, Interconnects, and Speaker Cables
  149. Zanden Audio Systems 120 Phono Stage
  150. Grimm Audio LS1 Loudspeakers and LS1s Subwoofers
  151. Aurender W20 Music Server
  152. Transfiguration Phoenix S Phono Cartridge
  153. M2Tech Young DSD Digital-to-Analog Converter
  154. Audio Research SP20 Preamplifier
  155. Magico S3 Loudspeakers
  156. Synergistic Research High Frequency Transducer (HFT) and Frequency Equalizer (FEQ) Room Treatments and XOT Crossover Transducer
  157. Ayre Acoustics KX-R Twenty Preamplifier
  158. Resonessence Labs Invicta Mirus Digital-to-Analog Converter
  159. Vivid Audio Giya G4 Loudspeakers
  160. Aurender X100L Music Server
  161. Sonus Faber Olympica I Loudspeakers
  162. Clarity Cable Organic Speaker Cables, Interconnects, Digital Interconnect, and Vortex Power Cord
  163. EgglestonWorks Nine Signature Loudspeakers
  164. Light Harmonic LightSpeed USB Cable
  165. David Berning Company ZH-230 Stereo Amplifier
  166. Esoteric Master Sound Works C-02 Preamplifier
  167. Vivid Audio Oval V1.5 Loudspeakers
  168. Daedalus Audio Argos v.2 Loudspeakers
  169. Octave Audio V 70 SE Integrated Amplifier
  170. KR Audio VA910 Mono Amplifiers
  171. T+A Criterion TCD 110 S Loudspeakers
  172. Birch Acoustics Raven Loudspeakers
  173. Monitor Audio Platinum PL200 Loudspeakers
  174. Essential Sound Products Essence Reference-II Power Cords and Reference-II Power Distributor
  175. JE Audio Dyad S400 Stereo Amplifier
  176. Dynamique Audio Celestial Speaker Cables, Zenith Interconnects, Firelight USB, and Infinite Power Cables
  177. Music Culture Elegance MC 501A CD Player-DAC
  178. KR Audio VA340 Mk.II Integrated Amplifier
  179. PMC IB2i Loudspeakers
  180. Cabasse Pacific 3 Loudspeakers
  181. Sonus Faber Venere 3.0 Loudspeakers
  182. Hegel Music Systems HD25 Digital-to-Analog Converter
  183. EMM Labs DAC2X Digital-to-Analog Converter
  184. Esoteric P-02 SACD/CD Transport and D-02 Digital-to-Analog Converter
  185. Vivid Audio Giya G3 Loudspeakers
  186. PBN Audio Scan-Speak B741 Loudspeakers
  187. Blue Circle Audio BC109 Preamplifier
  188. Dynaudio Confidence C2 Signature Loudspeakers
  189. First Watt J2 Stereo Amplifier
  190. Simaudio Moon Evolution 810LP Phono Stage
  191. Boulder Amplifiers 1060 Stereo Amplifier
  192. SMc Audio VRE-1C Reference Preamplifier
  193. Blue Circle Audio NSL Stereo Amplifier
  194. Audio Research Reference 250 Mono Amplifiers
  195. Von Schweikert Audio VR-35 Export Deluxe Loudspeakers
  196. Vitus Audio Signature SM-010 Mono Amplifiers
  197. YG Acoustics Kipod II Signature Loudspeakers
  198. Vandersteen Audio Treo Loudspeakers
  199. Magico Q1 Loudspeakers
  200. Hemingway Audio Prime Reference Mk.II Speaker Cables, Interconnects, and Power Cords
  201. Synergistic Research Element Copper, Tungsten, and Copper-Tungsten-Silver Interconnects and Speaker Cables
  202. Crystal Cable Arabesque Mini Loudspeakers
  203. EgglestonWorks Fontaine Signature Loudspeakers
  204. AudioQuest Diamond and Carbon FireWire 800 Cables
  205. Artos Audio Sunrise Loudspeakers
  206. Esoteric I-03 Integrated Amplifier
  207. NuForce DAC-9 Digital-to-Analog Converter
  208. Audience adeptResponse aR6-TS Power Conditioner
  209. EAR MC 4 Step-Up Transformer
  210. PBN Audio Montana InnerChoic Liberty Loudspeakers
  211. Simple Design Sonore Music Server
  212. Herron Audio VTSP-3A Preamplifier
  213. Copland CDA825 CD Player
  214. TW-Acustic Raven 10.5 Tonearm
  215. Artisan Silver MC Phono Stage
  216. MSB Technology Universal Media Transport
  217. Well Tempered Lab Amadeus Turntable
  218. Purity Audio Design Purity Reference Preamplifier
  219. Silverline Audio Sonatina Mk.IV Loudspeakers
  220. Ayre Acoustics DX-5 Universal A/V Engine
  221. Coda Technologies 15.0 Stereo Amplifier
  222. LessLoss Firewall Power Conditioner and DFPC Signature Power Cable
  223. Miyajima Laboratory Premium BE Mono Cartridge
  224. Magnum Dynalab MD 309 Integrated Amplifier
  225. Audio Research Reference 5 Preamplifier
  226. VAC Phi 200 Stereo Amplifier
  227. Ortofon Cadenza Mono Phono Cartridge
  228. Ultrasone Edition 8 Headphones
  229. YG Acoustics Carmel Loudspeakers
  230. Atma-Sphere Music Amplifier M-60 Mk.3.1 Mono Amplifiers
  231. AudioPrism Ground Control Grounding Cables
  232. Nordost Norse Frey Interconnects and Speaker Cables
  233. Ayre Acoustics KX-R Preamplifier and MX-R Mono Amplifiers
  234. Raysonic SP-300 Integrated Amplifier
  235. Synergistic Research Galileo Universal Interconnect and Speaker Cells, and Mini Power Couplers
  236. VAC Renaissance Mk.3 Preamplifier
  237. Accustic Arts Reference Tube-DAC II SE DAC and Reference Drive II CD Transport
  238. Silent Running Audio VR fp isoBASE Equipment Platforms
  239. EAR 890 Stereo Amplifier

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210x600 T+A R Criterion S (20240601)
Gryphon Audio Essence
 Electrocompaniet - AW300M
Electrocompaniet AW 300M
Vitus Audio
Vitus Audio

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