Audioquest THUNDER High-Current 20 AMP Power Cable - 2 Meter



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  • Solid Long-Grain Copper (LGC)/ Perfect-Surface Copper (PSC) Conductors
  • Uncompressed High-Current Transfer
  • Ground Noise Dissipation Technology (US Patent # 9,373,439)
  • Zero Characteristic Impedance (50Hz – 1MHz)
  • 72VDC Dielectric Bias System (US Patent #7,126,055)
  • Directionally Controlled Conductors


Alternating Current (AC), is a far-from-perfect power source. AC power technology is well over a century old and was never designed to meet the exacting standards of today’s high resolution audio-video components. AC noise is present at the utility source, and is then exacerbated by radio frequency noise that is induced (picked up by the AC power cord) and coupled to the component power supplies and to circuit ground. This creates distortion and low-level signal losses via the “masking effect.” Further, power amplifiers can require immense reserves of transient current for their power supplies to react to and then stabilize during dynamic audio passages. Most AC power cords and power conditioner-regenerators, though helpful to a point, are simply not up to the task.



Power amplifiers present a real challenge for any AC power source, as the transient current requirements (though short in duration) can be many times that of the average (RMS) current consumption. Power amplifiers are also unique from all other components in that the current draw is dynamic, not constant, and it changes with volume and audio signal content. Though many AC power cords may feature low DC resistance to allow for some of this requirement, the characteristic impedance of the AC cable is equally responsible for assuring uncompromised performance. Many premium AC cords constrict or compress the audio transient as their characteristic impedance restricts the transient current.




All drawn metal strands or conductors have a non-symmetrical, and therefore directional, grain structure. AudioQuest controls the resulting RF impedance variation so that noise is drained away from where it will cause distortion. The correct direction is determined by listening to every batch of metal conductors used in every AudioQuest audio cable. Arrows are clearly marked on the connectors to ensure superior sound quality.


All insulation between two or more conductors is also a dielectric whose properties will affect the integrity of the signal. When the dielectric is unbiased, dielectric-involvement (absorption and non-linear release of energy) causes different amounts of time delay (phase shift) for different frequencies and energy levels, which is a real problem for very time-sensitive multi-octave audio. The inclusion of an RF Trap (developed for AudioQuest’s Niagara Series of power products), ensures that radio frequency noise will not be induced into the signal conductors from the DBS field elements.(DBS, US Pat #s 7,126,055 & 7,872,195 B1)




AC Ground wires provide protection from current-wiring faults, but they also act as antennas. Thus, they are subject to induced radio frequency (RF) noise. This RF noise bypasses component power supplies and is typically coupled directly into a system’s most sensitive audio-video circuits. AudioQuest’s patented Ground-Noise Dissipation greatly reduces this distortion, yielding unprecedented levels of noise dissipation across the widest bandwidth (range) of radio frequencies possible. Our unique circuit-topology utilizes a common-mode phase-cancelling array, in concert with proprietary dielectric materials which provide additional differential linear filtering. (US Patent # 9,373,439)


A carefully finessed combination of solid high-purity Long-Grain Copper (LGC) and high-purity Perfect-Surface Copper (PSC) conductors prevent strand interaction, a major source of ear fatiguing transient intermodulation distortion. LGC allows a smoother and clearer sound than standard OFHC (Oxygen-Free-High-Conductivity) copper. The astonishingly smooth and pure Perfect-Surface Copper further eliminates harshness and greatly increases clarity compared to OFHC, OCC, 8N and other premium coppers.




With current capacity of 20 amps RMS @ 125VAC 50/60Hz (16 amps RMS @ 220-240VA 50/60Hz), Thunder/High-Current can withstand current transient peaks many times its continuous (average) RMS rating. This makes Thunder/High-Current ideally suited for a wide assortment of AC power conditioners, power regenerators, AC isolation transformers, and AC battery back-up devices, as well as any power amplifier, powered subwoofer, powered loudspeaker, powered receiver, or integrated amplifier.


MetalSolid LGC / PSC
Gauge 11 AWG
TechnologyZero Characteristic Impedance
(50Hz – 1MHz);
Ground Noise-Dissipation;
72V Dielectric Bias System
Braid Brown/Black
Terminations Hanging-Gold over Purple Copper

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Four more than four decades Trutone Electronics has been proudly serving the Greater Toronto Area with the greatest asset any specialty audio video dealership possesses: a well informed, experienced and knowledgeable sales staff. Our location in Mississauga is able to assist you in creating a smart home automation system, distributed audio throughout your home and yard, or dedicated home theatre. Trutone's carefully chosen product lines include surround sound receivers, loudspeakers, televisions, custom remote controls, audio video furniture, room acoustic controls, headphones, bluray players, projectors, and screens.