Clean High Current Power

My personal experience involving after market power cables came at a young age. While playing my electric guitar at friend’s studio I noticed some curious looking power cables and inquired. We quickly decided that an evaluation must commence. After I plugged my amp into the AC socket with a high current power cable the rest was history. The first note I picked rang out of the tube amp with a greater sense of responsiveness that startled me. It was as though the efficient delivery of power allowed my amp to react more quickly/accurately when picking a guitar string. I felt a greater connection to my guitar because the amp was now able to mirror my playing movements with better accuracy and ease. I was hooked!

Getting hi-fidelity sound starts at the source. Whether you play musical instruments that are electric, record audio, or just listen on the Hi-Fi, proper power delivery is essential. In essence, all the sound these devices reproduce comes from alternating current. More specifically, the AC from your outlet is converted to DC by the audio equipment’s power supply. This direct current is the electrical force that drives loudspeakers and powers audio circuits. Providing the cleanest and most unhindered flow of electrical current will allow your audio gear to sound its best.

A few design principles seem to be shared by various high end cable manufacturers. Larger gauge conductors are used to maximize current flow, while radio frequency interference and electro-magnetic interference are addressed by the shielding or geometry of the conductors. Treating the conductors with cryogenics or using specially extruded copper are also known to improve conductor integrity. After listening and evaluating a variety of power cables, I was most impressed with those produced by Shunyata Research of Poulsbo, WA.

No, It’s not a substation on the television series Lost. The Hydra 2 is Shunyata’s smallest power conditioning unit. With special filter networks to remove noise produced by equipment sharing an AC circuit, the Hydra furthers improvements brought by specialty power cables alone. This device excels at current delivery, noise suppression, and even has special surge protection. Small systems will only require one Hydra 2*, while larger audio/video systems may want a 6 outlet Hydra.

I experimented with two Hydra units in order to separate my digital and analog equipment. My system’s background noise was greatly reduced and sound emited from a black back drop. Micro dynamics and the full extension of bass notes were rendered clearer. Even as I turned the volume up, the resolution maintained. The strain I associated with my sound system was removed once efficient power delivery was introduced. Be prepared to hear a clearer, wider, and deeper soundstage – you can’t help but be fully immersed in the music!

Hydra 2 supported and isolated with Black Diamond Racing

Shunyata does not recommend placing their power conditioners directly on carpet. While special carpet piecing spike can also isolate the Hydra 2, a solid rack shelf is prefered. In order to isolate my Hydra units from external vibrations, I use Black Diamond Racing support systems. These carbon fiber cones and disks reduce the transference of mechanical vibrations. The resin/carbon cone coupled into the cabon fiber disc is a great starting point for those wanting to experement with this improvement.

Black Diamond Racing Carbon Fiber isolation discs are dimpled on other side

*Hydra 2 has been replaced with a new version called the “Hydra-a or alpha.” These newer Hydra power distributors only provide spike protection on the larger Hyrda Alpha 4 or 6 outlet units. All photos by: Vahan Baladouni

Note* I have recently had the opportunity to try Audioquest solid-core high purity copper AC power cables. I was very impressed with the NRG-4 on mic preamps, AD converters, DACs. The Shunyata power cables are a fine product, but I would recommend checking out the Audioquest power cables too.

Devialet D-Premier

Devialet D-Premier

Pleasing modern aesthetics isn’t always associated with audiophile gear. In fact, finding Hi-Fi equipment that blends sonic delight with great design is something to be applauded. French audio firms Focal and Devialet are no slouches in this department. Devialet, in particular, produces an integrated amplifier that incorporates unique and compact audio circuits with a clean industrial design to match.

The D-Premier ($15,995USD) is an integrated amplifier with onboard digital-to-analog conversion for various digital music sources (digital coax, optical, & AES/it also has analog inputs) as well as a hybrid power amplifier section capable of driving a variety of speakers. Devialet seems to favor short signal paths while harnessing the strengths of class A and class D amplifier topologies. It is my understanding that the D-Premier incorporates a class A input section with a digital switching amp for power output. I am certainly oversimplifying this design, but proof is in the listening. Technically speaking, the D-Premier achieves very low distortion (THD+N (harmonic distortion) at full power: 0.001%) while providing 240 watts of power into 8 ohms. This power can be increased (2×400 watts and THD+N lowered to 0.00025%!) by using two separate D-Premier’s in a mono block configuration. That’s lots of power in a relatively small/thin footprint! – eloquent dual mono setup.

I heard this amplifier powering Focal Stella Utopia speakers while playing source material from a Sooloos digital music server. Music was reproduced with precision, clarity and control. When over limited recordings were played (Adele’s 21), all the vocal distortions came through with obvious detail. This amplifier is very accurate, and provides the listener with all the sonic layers while providing precision and control to speaker drivers.

The Stella Utopia incorporate an active Electro-magnetic speaker technology which of course requires power and some serious floor space! I would have really liked to see how the Devialet-D and the Focal speakers sounded with vinyl playback, but with the demo provided I could be easily persuaded to do further listening.

For blending with room decor, the Devialet -D integrated amplifier may be hung on the wall. This allows all wiring to be done through the wall, thus eliminating unsightly audiophile cables. A video demonstrating the chrome finish, and how it reflects the rooms colors can be seen at the Devialet website homepage. Ergonomically, the D-Premier’s wireless remote provides a luxurious dial for adjusting volume level,audio inputs, and even a phase invert button. Right now, it is only available in chrome, black, and white finishes. I am told (by the US distributor) that other colors will eventually become available.

Devialet’s modern industrial design comes complete with Apple style packaging. Firmware upgrades provide improved features such as wireless high-definition audio (up to 96khz).

This integrated amplification system combines powerful fidelity, flexibility, ease of control and graceful design. Getting to the heart of music seems to be a priority with the D-Premier, and I for one welcome this approach.

Happy Listening!