Whether power cords represent the most important component in a high-end system, or the least, or even qualify as a component at all is an argument for another day. Controversies aside, power cords are a necessity and, technically, the first piece of gear that the system sees. For this article I listened to mid/upper-priced power cords from three top players in the field. All represent a serious upgrade over stock cords and a significant expenditure to boot. Each in its own way suggests that when the AC flows freely and cleanly, and aggressive isolation technology is used to thwart EMI/RFI, the rest of the chain clearly benefits. Audience, Voodoo Cable, and Dynamic Design each supplied a pair of power cords. Dynamic Design and Voodoo Cable provided products specified for high power and source applications, while Audience opted for identical power cords.
Let me state at the outset that there wasn’t an ounce of dead weight among these entrants. Each presented a solid step up in resolution over stock cords and in some areas were threats to my reference power cords, like the Synergistic Research Hologram A. Ultimately patterns begin to emerge. The three contenders share a fine resolution of dynamic gradients that adds liveliness to the presentation; yet each accents music in unique and subtle ways, not as an EQ switch but by adding its own “body English” to the presentation, particularly in the area of low-level integrity and focus—the micro-aspects of music reproduction with an emphasis on dimensional space and depth information, such as the layering of string players in an orchestra for example. The recordings I used ranged from pop titles like Holly Cole’s Temptation to Reference Recordings of the Rutter Requiem, Elgar’s Enigma Variations, and Vaughan-Williams’ The Wasps, MA Recordings’ Sera Una Noche, especially the track “Nublado,” and the vinyl ORG reissue of Ricki Lee Jones’ Pop Pop, particularly the cut “I’ll be Seeing You."
Dynamic Design AE15 Lotus and Challenger
Dynamic Design AV is a Chicago-based cable company that currently offers three levels of power-cord products, the entry-level Lotus series, mid-level Heritage series, and the flagship Nebula series. Commemorating its 15th Anniversary are the AE15 Lotus Analog power cord for analog components like amplifiers, and the Heritage Series AE15 Challenger Digital power cord for low-power or source components. Dynamic Design uses a variety of proprietary shielding technologies to improve isolation from EMI/ RFI, and maximize conductivity. The Challenger, for example, uses Multi Layer Insulation System (MLIS) and or Unitized Multi Layer Shielding (UMLS) to lower the noise floor, reduce cross talk, and increase dynamics. Dynamic Design’s Challenger also includes a battery-powered shielding circuit to reduce coupling capacitance and isolate system noise from the system ground.
The Lotus and Challenger combo exhibited an openness, a harmonic ease, and lack of tension that effectively permitted them to disappear from the soundspace as convincingly as the reference. Their character is neutral-to-warm. Without losing any speed or attack, solo piano seemed to relax a bit and bloom harmonically. Lotus and Challenger tended to round off the more aggressive elements of string sound in some recordings. During The Wasps overture, they reproduced the brass section in all its airy intensity from the transient bite emanating from the mouthpiece of each trombone to the golden bloom shimmering outward from instrument’s bell. They captured textural information that grounds images to the stage with superior focus and without the disadvantage of added etch or brittleness. It doesn’t take much to smudge the gently brushed snare and the sax and bass lines during “I’ll Be Seeing You,” but the DD cords mastered this challenge with ease. Ricki Lee Jones’ vocal on this track had a slightly darker, richer sound consistent with these cords’ easy-going, open treble. Similarly backgrounds were church-mouse quiet, allowing rich, dense tonal color to emerge from dark velvet silences.
The “Nublado” track from MA Recordings conveyed layers of depth and dimension that bordered on the holographic, providing plenty of elbow room for discrete image elements to breathe—like the snap and trailing resonances of the classical guitar, the buttery bandaleon, and fast percussion stabs from the other accompanists. The DD seemed to offer thicker, heavier bass as well as a nice combination of punch and refinement— impressive but slower as well.
But Lotus and Challenger’s biggest calling cards were the high levels of bloom and reverberant information they conveyed. During Holly Cole’s “Train” the slowly decaying vibrations off the kettle drum that punctuate the end of each verse really shifted the air. There was a sense of drumhead movement and reverberation not altogether present with other cords. (It’s a terrific reference track—especially on LP—that presents a potpourri of percussion details and textures from the ring of a triangle to sandpapery wood blocks, all convincingly rendered with good vocal air and articulation.) During the Rutter Requiem the DD system conjured up a rich and inviting soundspace with powerful low-frequency information. Its ability to reproduce dimensional depth bordered on the exceptional. And again, on this disc I found its character skewing ever so slightly to the darker, wetter side of the tonal spectrum. You can hear it as the pedal points of the pipe organ charge the space with reverberation. Vocally there was a bit more definition between the mezzo-soprano and the ambient environs of the auditorium. The DD system’s low-level resolution allowed me to hear her rolled “r” sound when she pronounced the word “requiem.” Once again Lotus and Challenger demonstrated a bolder, slightly more forward sound that physicalizes images and sculpts their boundaries.
Conclusion: Hints of warmth and superb bass extension ably underscore the effortless bloom and roomy soundstage performance of this power cord.
Voodoo Cable Black Diamond and Electra
The Voodoo Cable Electra and Black Diamond occupy the midpoint in an extensive line of power cords. Black Diamond is recommended for solid-state and tube power amps, whereas Electra is suggested for source components and preamps. Voodoo reports that the primary difference between the two is tonal balance and harmonic resolution. It states that “while the Black Diamond offers a clean ‘dead neutral’ tonal balance, the Electra offers higher harmonic resolution that reveals subtle musical detail and micro-dynamics.”
The winding of Black Diamond is an #8 AWG concentric lay of twelve discrete conductors made of solid-core silver, solid-core copper, and stranded silver-plated copper, all hand-threaded and wound in Teflon dielectric. Electra’s winding is similar to the Black Diamond, but with the addition of hand-wound copper and silver Litz conductors in a heavier-gauge Teflon dielectric for lower noise and increased harmonic resolution. Both power cords are shielded with heavy-gauge copper braid and terminated with rhodium-plated tellurium-copper IEC and AC connectors. All the conductive materials and components have been treated in Voodoo’s Cold Fusion cryogenic system—both vapor and deep-immersion cryogenic processes, depending on the part or alloy to be treated. The process is said to structurally align and fuse the molecular bonds of the conductive alloys for significantly less resistance, leading to improved performance.