2016 Recommended Components Powerline Accessories

Powerline Accessories

Kubala-Sosna Elation AC cable: $1800, $500 each additional meter
A JA favorite. See "Interconnects." (NR)

AudioQuest Niagara 7000: $7995
Billed as "a complete rethinking" of AC distribution, the AudioQuest Niagara 7000 is a power-conditioning accessory that provides a total of 12 AC outlets: four hard-grounded high-current outlets, plus eight others divided into two groups of four, each said to be 100% isolated from the other and from the four high-current outlets. Inside this attractive 81-lb box are circuits comprising AudioQuest's Ultra-Linear Noise-Dissipation technology, six banks of direction-controlled ground-noise dissipation, and AC isolation transformers to which AQ's trademark Dielectric-Bias System (DBS) has been applied. Although MF described the Niagara 7000's outlets as "the most difficult to use I've ever encountered," owing to their sheer grip, he was impressed with the Niagara's effectiveness, which he regarded as being on a par with that of his Shunyata Research Hydra Triton v2 and Hydra Typhon distributors. Each had its strengths, MF said, noting that "the Niagara 7000 better resolved fine detail and threw a deeper, more expansive soundstage." (Vol.39 No.2)

APC AV S15BLK: $730 w/battery backup ★
The S15BLK is a comprehensive power source, conditioner, and controller that features extensible external power and isolated EMI/RFI filtration for each of its outlet banks. Voltage regulation is accomplished electronically and without the hysteresis or rebound problems of slower, motor-driven compensation. Protected even the heaviest of KR's loads while also eliminating gray colorations and intermittent chassis vibration. "The S15 made the bridged eVo6 into an even better power amplifier—a super amp." (Vol.28 No.9 WWW)

Audience Adept Response aR12-TS AC power conditioner: $8995 ★
The Adept Response provides power-factor correction, RF noise filtering, transient suppression, and 12 Hubbell high-conductivity power outlets. Each outlet is isolated from its input by one filter, and further isolated from the other outlets by a combination of two additional filters, allowing an entire audio system to be plugged into a single AR. BD noted a profound overall improvement in his system's performance, characterized by enhanced clarity, precision, low-level detail, image definition, soundstage size and depth, and tonal density. "A thoroughly thought out, well-designed, nicely executed manifestation of all that's currently known about power conditioning," said BD. "TS" changes from the earlier aR12 include: a new, larger ground with connections welded rather than bolted; Teflon capacitors throughout; and the use of monocrystal copper wire on the Teflon caps. With the aR12-TS in BD's system, dynamic transients expanded, resolution of low-level detail significantly improved, soundstages opened up, images became more dimensional, and voices took on additional harmonic richness. "The Audience aR12-TS is the best power conditioner I've heard," said BD. (Vol.30 No.4; Vol.34 No.10; Vol.35 No.1 WWW)

Audience powerChord: $539/6ft ★
"The wonderfully flexible powerChord, too, was a winner, significantly cleaning up the sound by lowering the noise floor, opening up the space between instruments, and significantly improving the system's resolution of low-level and inner detail." Though BD's reference, Synergistic Research's AC Master Coupler, offered better senses of space and ambience, the Audience was very nearly as good and much easier to use. (Vol.25 No.8 WWW)

AudioQuest 3 US AC power strip: $35
AudioQuest's sturdy little 3 US has three standard three-pronged power outlets and accepts a standard IEC power cord of any length and girth. "Plug in a good cable and you have a serious extension cord that will distribute AC where you need it," said KR. "Like having a power strip in your back pocket. You never know when you will need it," he sums up. (Vol.35 No.12 WWW)

AudioQuest NRG-X3 AC cord: $99/6ft
The NRG-X3 three-pole AC cord uses strands of long-grain copper for its semisolid, concentric-packed conductors. SM connected the NRG-X3 to the Emotiva ERC-2 CD player and heard a cleaner, brighter top end; faster, more assertive attacks; and longer, lovelier decays. "The AudioQuest NRG-X3 delivered more music, made more sense of the music, managed to more fully convey the artists' intentions, and made me a happy guy," he said. (Vol.35 No.1 WWW)

Ayre Acoustics L-5xe power line filter: $2450 ★
In an attempt to dissipate unwanted high-frequency energy riding on the AC line as heat, the L-5xe, built into the same case as Ayre's P-5xe phono stage, the L-5xe line filter uses a coil of wire wrapped around a nonferrous core for each of its four AC jacks. "Its slight softening effect seemed to improve image palpability, three-dimensionality, and midband texture," said MF. However, the Ayre's "pleasing romanticism" lacked the believability of the faster and more detailed Shunyata Hydra 2, he felt. With the L-5xe in his system, JM noted a taller, wider soundstage and sweeter highs, with no loss of resolution. "Without question, the L-5xe made the system more listenable," he decided. (Vol.30 No.7, Vol.36 No.10 WWW)

Brick Wall PW8R15AUD surge protector: $259 ★
This small, solid, black block is a series-mode surge protector rated for 15A loads and comes equipped with eight outlets in four filtered banks and a captive 14-gauge AC cord. Gave KR the sense that his equipment was safe from catastrophic insult without changing his system's performance whatsoever. (Vol.28 No.5 WWW)

CablePro NANA power strip: $350 ★
Manufactured by Wavelength Audio Video and available at most Naim Audio dealers, the NANA is an eight-outlet power strip featuring 12-gauge silver-plated OFC internal wiring, silver-soldered connections, and a hardwired, shielded power cord, all built into a nonmagnetic enclosure, and devoid of LEDs, MOVs, and filters which might corrupt performance. Plugging his entire system into this one strip, Art found "unambiguously good" performance: "My system was simply easier to listen to, and required less nervous energy on my part in order to convince myself I was hearing music." As of 2013, 12 gauge stranded UP-OCC wiring adds $100, Furutech high-performance IEC inlet adds $27.35, passive noise reduction package adds $30. (Vol.29 No.3 WWW)

Environmental Potentials EP-2450 Home Theater Power Supply: $1025.21
Environmental Potentials EP-2050 Waveform Correction Absorber: $728.99 ★

The EP-2450, a lightweight, full-size chassis, has eight unisolated AC outlets that can pass 20 amperes of HF-filtered, ground-filtered, surge-protected AC, and comes equipped with a filtered and surge-protected coaxial line. KR used the EP-2450 to rid his system of noise generated from digital amps. "Reduced amp noise to effective inaudibility!" The E-2050 provides protection from AC-borne noise by means of a tracking filter, and uses a metal-oxide varistor to clamp and absorb surges. KR: "Examination of my house's line voltage on an oscilloscope revealed a smoother, cleaner 60Hz signal than before." (Vol.28 No.9 WWW)

Fono Acustica Sinfo power distributor: $9995
Made in Germany, the Sinfo is an attractive six-outlet power strip made of solid Panzerholz, a natural wood material said to protect against vibrations and electromagnetic-wave contamination. It uses Oyaide's top-of-the-line outlets and power inlet; the IEC blades are trimmed down from a phosphor-bronze slab, hand-polished, and plated with a combination of platinum and palladium. The outlets are connected with exotic, thermo-treated wire, and the Sinfo contains no capacitors, inductive filters, or transformers. With his gear plugged into the Sinfo, the sound of MF's system was consistently lusher, richer, and sweeter. Expensive. (Vol.35 No.12)

Furman IT-Reference 20i power conditioner: $3699 ★
Furman Sound's top-of-the-line power conditioner provides four duplex outlets offering balanced and power-factor–corrected AC, as well as two duplex outlets offering unbalanced power for high-current-draw power amplifiers. JM: "The IT-Reference 20i is built like a tank, and worked flawlessly. It brought a slight lowering of the noise floor without any reduction in dynamics." (Vol.30 No.10 WWW)

GutWire B-16: $99/5 feet $$$ ★
Uses Schurter and Leviton connectors on multistranded, oxygen-free copper wire. With the B-16 in place, JM noted improved image focus and clarity. "A great value," he said. (Vol.31 No.10 WWW)

HiFi-Tuning Silverstar/Gold fuses: $39.95–$59.95 each ★
These German fuses, distributed in the US by Ultra Systems, have silver filaments, ceramic bodies, and gold-over-silver terminations. Mikey replaced the cheap fuses in his Musical Fidelity kWP preamplifier and was rewarded with a subtle but noticeable improvement in smoothness and coherence. The HiFi-Tuning fuses worked well with both the Onkyo A-9555 and PS Audio GCC-100, imparting a clearer, more dynamic sound, with crisper transients, said RD. The element of the HiFi-Tuning Supreme fuse ($59.95, small; $89.95, large) is 99% silver impregnated with 1% gold. Its case is of ceramic rather than glass, for better resonance characteristics, and is cryogenically treated. Installed in the PrimaLuna ProLogue Premium integrated amplifier, the Supreme fuse created "a marked increase in clarity," said RD. Go figure! Available in various sizes. (Vol.30 Nos.2 & 9, Vol.35 No.5 WWW)

JPS Labs Aluminata AC Cable: $3999 ★
The Aluminata AC has three 8-gauge Kapton-insulated conductors and uses a Wattgate plug and IEC connector, both with gold-plated contacts. Along with the matching interconnects and speaker cables, the Aluminatas "brought a new measure of spaciousness, scale, smoothness, heretofore unimagined detail, and overall musical ease and naturalness to my music system," AD enthused. KR agrees with AD that the expensive Aluminata lowers his system's noise floor. (Vol.30 No.4 WWW; also see CS's VTL review in Vol.25 No.11)

JPS Labs The Digital AC-X Cable: $399 ★
Uses "very-high-purity" stranded copper conductors, insulated to a 300V rating and said to contain a special compound that absorbs and dissipates high-frequency energy. AD: "The Digital AC endowed the music with a better sense of flow and a smoother, more 'liquid' presentation....The sound was more open...with an easier, more natural sense of movement from note to note....The performance as a whole also seemed more dramatic and, in some spots, downright louder." He purchased The Digital AC to use with his Sony SACD player. Current "X" version has updated capacitors. (Vol.26 No.4 WWW)

Kimber Kable PK10 BASE PowerKord: $320/6 ft, other lengths are available at $26/ft. ★
ST used Kimber Kords throughout his system, and noted tremendous differences with a Jadis Defy-7. But try before you buy, he warns. (NR)

Kubala-Sosna Emotion AC cable: $1100/m; $300/additional meter
A KR favorite. See "Loudspeaker Cables." Add $300 for each additional meter. (Vol.29 No.7 WWW)

Nordost Qbase QB8: $1599.99
Of this AC strip's eight outlet sockets, only the one at the center of the strip goes straight to ground. For the remaining seven, resistors are inserted between the sockets and the ground in an attempt to reduce the noisy currents that can come from having multiple ground points of differing potentials within the system. (Vol.32 No.12 WWW)

Shunyata Research SR-Z1 wall outlet: $95
A JM favorite, this heavy-duty duplex outlet has a vented case for heat dissipation and uses highly conductive brass connectors. (Vol.36 No.10 WWW)

Shunyata Research Venom Power System: $1185
The Venom system consists of Shunyata's PS8 eight-outlet power-distribution strip ($695), three models of Venom power cords ($75–$295/1.75m), a Venom HDMI cable, and the Venom Defender plug-in noise filter with surge protection ($195). Optional stainless-steel spikes ($200) replace the PS8's stock rubber feet. Housed in a handsome enclosure of brushed stainless steel that's meant to sit on the floor beside or behind an equipment rack, the PS8 uses cryogenically treated Hubbell outlets, oxygen-free copper wiring, and a Carling Technologies hydraulic-electromagnetic circuit breaker. The Venom Defender contains a thermally insulated metal-oxide varistor that provides 22,000 amps of surge protection. With the Venom products in his system, JM noted a significantly lower noise floor and more easeful overall sound. "Highly recommended," he said. (Vol.36 No.12 WWW)

Silver Circle Audio Pure Power One 5.0 isolation transformer: $6000 ★
Though expensive, the Pure Power One 5.0 includes a 65-lb, 5kVA, custom-built isolation transformer, a proprietary EMI/RF filter, four double-ganged, gold-plated Furutech AC jacks, and a Vesuvius power cord. The PP1 5.0 eliminated noise and increased dynamic range, allowing music to emerge from the soundstage with far greater three-dimensionality. "There was no downside to using the PP1 5.0, only a big upside," said Mikey. Price includes shipping within continental US. (Vol.33 No.8)

Torus Power RM20 AC power isolation unit: $3295 ★
Torus Power's Power Isolation Units (PIUs) combine surge suppression with massive toroidal transformers to provide AC power conditioning and protection from voltage surges. The RM20 uses a single 2400VA toroidal transformer to supply 120V and 20 amperes to the 10 AC outlets on its rear panel. It has a 20A circuit breaker for its On/Off switch and uses a 14AWG detachable AC cord rated at 15A/125V. "The PIU greatly enhanced subtle details of tone, timbre, and imaging when dynamics were extreme or volume was loud," said LG. CS20 version has 17" faceplate (silver or black); also costs $3295. (Vol.31 No.1 WWW)

Wireworld Platinum Electra power cord: $1700/1m
Compared to the more expensive Shunyata Research ZiTron Anaconda, the Platinum Electra sounded less vivid and less natural, said MF. (Vol.36 No.11) Deletions
Shunyata Research Hydra Triton power conditioner replaced by new version.

Staxguy's picture

Class A

Audeze LCD-X: Why would you consider the Audeze LCD-X over the Audeze LCD-3? The Audeze LCD-3, though veiled, "digital" (too few bits of detail), and non-liquid, at least presents music as beautiful.

Not only this, but it (3) is a personal luxury product, with a gorgeous headband, ear-pads, and wood ear-cups.

There also is the issue of it (3) having phenomenal bass, on the non-Fazor version.

The LCD-X? It sounds like absolutely nothing. By nothing, one means about $600.

Audender Flow

Giving that you are Stereophile, this would be great in the Class C department. It has DSD, etc. and decent specs, but no balanced out, so no headphone enthusiast would consider using it.

Chord Mojo: A great DAC/amp. Great that you have it in Class A.

Sennheiser 650/600: certainly very comfortable, but no match for the 580. ;) While neither sounds like shit (the 600 is more natural), they lack any detail and air, although their true comfort makes them fantastic computer speakers. Still, Class C.

HiFiMan 400i: Shouldn't it be the HE-6? Where is the HE 1000? This is Class A guys.

Sennheiser IE 800: Where is this? Perhaps more detailed and fast than the HD-800 and only $1000. ($800 US). Obviously, no imaging like the HD. What an amazing headphone, the HD 800.

Omissions: Shouldn't the class A be the Stax 009 and perhaps some excessive (read: expensive) headphone amplifiers? Om.

Class B

Apogee Groove. Ok. Great. A pro-audio device.

Audeze EL-8: What? Ok. This one sounds like shit. Ok, have only heard the closed. Great cheap price ($699) and design job by BMW, but terrible sound an not even a part of the LCD-2. What a looser.

Audioquest Nighthawlk: Huh? Wah.

B&W P3: Why the P3 and not the P5 or P7? Isn't the quality of the P3 pathetic? Sound, gentlemen, sound.

CEEntrence DACPort: Ok. Great device. How about more CEntrance. Great specs.!

Master & Dynamic MD40: Is this a poor men's clothing magazine?

PSB M4U: Shouldn't this be Class E?

Class C:

Audioengine D3: for $149 a great made device with great components. However, the sound is worse than the stock Intel audio chip you'll have in your PC. Does have less hum and noise than an-in PC chip, though.

Overall: Where are the audiophile components?

Sorry to be a party-pooper.

dalethorn's picture

Mostly agree. Headphones don't seem as accurately covered here as the big stuff. Maybe the headphones and other portable gear should be covered entirely by Innerfidelity, in Stereophile Recommended Components.

Glotz's picture

Naw, just haughty, arrogant and disrespectful.

They reviewed various products for the magazine, and this is the list they came up with. The classes are explained in full, in relation to the other products's performance that have made the list. Older products, sometimes equally capable as current products listed, are removed due to age. Lastly, most reviewers have their own benchmarks and their own opinions about component performance, hence their choice of placement in the classes.

You can disagree all you want man, just do it with a modicum of respect. If you want to start your own magazine, go for it dude.

K.Reid's picture

Glad to see this mighty monitor included in Class A restricted low frequency. Very well deserved and impeccably engineered at a fair price. Most importantly it sounds great. An excellent effort by the folks at Technics. It's obvious they care about and love music by making a product like this.

low2midhifi's picture

I read JA's assessment of the Arcam A19 regarding its ability to handle low impedance, high volume listening.

I wanted to add my own, perhaps less scientific assessment of the Arcam A18 predecessor model.

I have my Arcam A18 integrated connected to Canton Ergo 32DC speakers whose impedance range is listed as 4...8 Ohm, 87 dB by the manufacturer. The owner's manual for my speakers, of about year 2000 vintage, states that the speakers can be "unhesitatingly operated with any standard amplifier" (with some small qualifications later in the manual).

Stereophile's tests of other Canton speakers show that the speakers tend to operate more towards the 4, rather than the 8 Ohm range of input impedance.

I have used my Canton speakers with my demo model Arcam A18 for several years now. I am not a loud volume listener, but I like room filling sound. For a benchmark of my listening, I will say that audio show rooms, for example, are, for the most part, way too loud.

I did a test this morning. On the integrated's volume range of 1 to 99, I did some listening around 38 on the volume scale. I listened to a Chandos recording of Bryden Thomson's LSO recording of Vaughn Willams's 8th Symphony and assorted string works (Chandos 8828, a great audiophile recording still in circulation). This volume is adequate to fill the room amply with sound. Vaughn Williams works will require a bit more gas-pedal than other orchestral works.

Then, for some higher octane listening, but with the volume set at the same 38 position, I did another test. I listened to the great recording of Don Juan, with the Cleveland Orchestra, and the late great Lorin Maazel (CBS Masterworks MDK 44909). If I had finicky neighbors adjacent to my listening room for this session, they might have complained over the volume in some sections of this work.

After listening to these CD tracks, I put my hand over the unobstructed top ventilation grate on the Arcam A18. After feeling the heat, which was almost imperceptible, I then put my hand to my cheek. After 5 seconds the heat from my cheek was noticeably warmer.

I'd guess that John's assessment would apply particularly--without mentioning brands--to low efficiency low impedance speakers, of the 84-85 dB and/or 4 Ohms nominal varieties. But for my speakers the Arcam never seems over-taxed, and certainly never clips with the music and volume settings that I employ.

If you are a moderate-to-room filling volume listener, have stand-mount speakers of 87-88 dB, and 8 Ohm nominal impedance, and love peerless sound, I'd say buy the Arcam A19 without hesitation. I'm not a dealer or a professional, but that's my assessment. A reader wrote in the Stereophile review of the A19 that he found the A19 to be a big improvement from the A18. My dealer says that if you have an A18, you can probably live with it without going to the A19.

Other publications, that score products in their reviews, show the Arcam A18/A19 models garnering the highest scores of the Arcam integrated amp line-up.

Those are my two cents on the Arcam A19.

makarisma's picture

What about products from companies such as T+A, YBA, Linn, McIntosh, etc., all of which also have outstanding models in the listed catagories?

pablolie's picture

based on the reviews, it seems to defy logic you give the Benchmark AHB2 a class A rating, and the NAD M22 a class B. to quote your own review, the AHB2 "failed to be as lively or exciting as the NAD". oddly enough, the word "loss" is not mentioned anywhere in the M22's review, so it surprises me it shows up in the recommended equipment guide.

sharethemusic's picture

i am the proud owner of raven audio amplification. "THE RAVEN" a 3oob tube based integrated amplifier. There can be no better amplification in the world. You see right thru the music. Your are drawn into it. All the details of the recording are there.Is there colorization by the tubes? Not sure.i can only tell you the music sounds exactly as intended and as natural and neutral as can be.it is rated at 15 watts per channel..Some may not understand. Raven audios 10 watts,is another tube companies 40 watts and solid states 80 watts. It is in the power supply and voltage regulation that all the power of god on earth is unleashed. the power is more than enough to fill my 20x 20 room with blasting clear,warm glorious sound. i have owned mcintosh,krell ,NAD AND MARK LEVINSON. There really isnt anything but maybe my old mac that sounds even close to the raven. andy rothman sharethemusic@aol.com

Ladokguy1's picture

I know Art Dudley has used Auditorium cables as a reference for several years, any reason they are not listed in Recommended Components?

AndySingh's picture


I went to my local store - Overture Audio, and auditioned the GoldenEar Aon 2 and Dynaudio Emit M10.

Listening to the M10's, I am surprised they (or other Dynaudio products) have never been reviewed on your site.

Is there a Dynaudio review on the horizon?

Glideyork's picture


I bought the Dynaudio m20 few weeks ago. I'm not really expert, but I think my amp (yamaha r-n500) is not enough powerful for these speakers. If you make some emit reviews, could you give us some advices about the good amps to associate with :/

Thanks for all the other really interesting articles.

AndySingh's picture

Speaking to Northwoods AV of Grand Rapids, MI, I was told that Yamaha Aventage 750/760 would be a good choice for 4 ohm speakers such as Dynaudio Emit M20.

The dealer claimed he was running Magnepans off of these. For a stereo setup, this receiver would do, however they probably only support 4 ohm impedance for front left and right.

The power output would not be a concern for a stereo setup.

gasolin's picture

I use the Marantz PM8005 and that is the smallest amp i would recommend for the Dynaudio emit m10's

z24069's picture

There are some fine choices on the Transports, Digital Processors, Preamp and Amp listings. I am puzzled however at the total lack of mention of any Esoteric Audio product. They are current products well known for their performance and musicality. What criteria being utilized could yield a recommended components lists where at least one of their products (or more) would not make it into the results?

Waves200's picture

Oh to live in a country with a reasonable rate of exchange! Our local Velodyne distributors have the DD+ 15-inch sub listed at the equivalent of almost $2000 more than the listed RRP is in the US. By the time that customs and excise is added to the cost, and the retailers have added their markup, you would be paying almost as much for the 15 inch model as you would for a new family car!