Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.
What reviewers think
Magazine reviewers and YouTubers have tried this product—so we've summarized their strongest opinions below.
Product Strengths
- Transient Power Correction (TPC) provides up to 55A peak current for power amps/integrated amps/subwoofers
- AC ground noise dissipation cleans AC power
- Non-sacrificial surge protection protects equipment from power surges up to 6000 volts or 3000 amps without sustaining damage
- A 'black background' in the music is created by lowering the noise floor, allowing for cleaner and clearer music
- The Niagara improves the sound of a high end system in terms of detail, rhythmic drive, palpable images, air, tuneful bass, and extended highs
Product Considerations
- Niagara products do not come with power cords, so one must supply their own
- The chrome faceplate on some Niagara models can pick up micro-scratches
- Sonic benefits may depend on the quality and resolving ability of the existing audio system
- The Niagara 3000 may not be compatible with all amplifiers' protection circuitry
Comparisons (according to reviewers)
- Compared to the AudioQuest Niagara 1200, the Niagara 3000 provides more octaves of level-x, differential-mode noise-filtering, banks of ground-noise dissipation, and transient power correction
- Compared to the AudioQuest Niagara 1200, a reviewer felt they were hearing just a bit more detail and an increase in soundstage height and width
Takeaway: The AudioQuest Niagara helps a system reach its full potential by lowering the noise floor and cleaning up the power. The Niagara can affect sound quality by improving the clarity and spaciousness of music.
Compared to their other products
We think it's helpful to understand how this product fits into the brand's full lineup (below). To learn more about these products, visit the brand's page.
AudioQuest Rocket
- Positioning: Positioned as a mid-range option within the lineup, offering solid performance at a more accessible price point.
- Description: Uses solid-core construction and Perfect Surface Copper (PSC) rather than the more expensive Perfect Surface Copper+ (PSC+). These cables are ideal for users with a moderate budget who want to enhance their audio system's bass performance without the need for the advanced noise dissipation technologies found in higher-end models.
AudioQuest Robin Hood
- Positioning: Part of the Folk Hero lineup, offering advanced technologies at a step below the top-tier models.
- Description: Features ZERO technology, which minimizes impedance and enhances signal clarity. Compared to the Rocket series, offers improved separation and detail. While not as advanced as the William Tell, it provides a significant upgrade over older models like the Castle Rock.
AudioQuest William Tell
- Positioning: Part of the Folk Hero series, positioned just below the flagship Mythical Creatures series.
- Description: Incorporates ZERO technology and a 72V Dielectric-Bias System, offering superior noise dissipation and signal integrity. Compared to the Robin Hood, provides a more robust build. The use of Perfect Surface Copper+ (PSC+) further distinguishes it from lower-tier models.
AudioQuest Thunderbird
- Positioning: The entry-level model in the Mythical Creatures series, offering high-end features at a more accessible price than its siblings.
- Description: Uses high-purity Perfect Surface Copper+ (PSC+) and advanced noise dissipation technologies. While not as refined as the Firebird or Dragon, offers a balanced tonal quality and is suitable for users seeking high performance without the top-tier price.
AudioQuest Firebird
- Positioning: Sits between Thunderbird and Dragon in the Mythical Creatures series, offering a higher level of performance.
- Description: Features clarity and detail, with a clean and punchy bass that surpasses the Thunderbird. They are designed for audiophiles who demand superior sound quality.
AudioQuest Dragon
- Positioning: The flagship model in the Mythical Creatures series, representing the pinnacle of cable technology.
- Description: Offers exceptional transparency, with a vivid midrange and rich tonal color. Compared to the Firebird, provides an even darker background and more detailed sound.
Read the reviews
Niagara 3000
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Manufacturer's notes
Noise Dissipation: Linear Noise Dissipation and Patented Ground-Noise Dissipation - 3 Banks (all outlets)
Power Cable: Not included. An AudioQuest Direction-Controlled AC power cable is required to take full advantage of the Niagara’s Noise-Dissipation Technology.
Transient Power Correction: 55 amps peak (up to 25mS)
Non-Sacrificial Surge Protection: Yes
Maximum RMS Current: 15 Amps (RMS) @ 120V
DBS Symmetrical Power Isolation Transformer: No
Our take on the brand
Used
AudioQuest
What if you spend a bit more?
The most significant differences compared to the PC-3 EVO+ : – distribution rails made of silver-plated, highly conductive copper (99.995%) with a cross-section of 30mm2 – hydraulic-magnetic switch by Carling Technologies – damping of the housing with a bitumen-polymer composite mat – LC-2 EVO cable as standard
All elements of the conditioner are mounted in a rigid steel-aluminum chassis, which rests on anti-vibration feet, made of solid anodized aluminum, with an additional layer of the company's 3.5 mm thick elastomer. To reduce vibrations transferred to the conditioner, its chassis was additionally damped with a bitumen-polymer composite mat. The front panel of the conditioner, is made of a thick slab of aircraft aluminum, the surface of which, after precise milling, is roughened and then anodized in two colors – black or silver. In the central part there is an LED display indicating the value of the input voltage. The voltmeter is characterized by resistance to distortion and measurement errors caused by higher harmonics, while not generating any interference that could degrade the quality of the voltage filtered by the conditioner. The display, which has a fade-out option, is white as standard. Nine other colors are available upon request.
The PC-3SE EVO+ has six, top-quality proprietary output sockets, with contacts of large surface area. The brass contacts are technically silver plated, with no intermediate metal layers such as copper or nickel, which could introduce unfavorable series resistance and voltage drop. The conditioner is also equipped with an additional circuit that signals if the device is incorrectly connected to the mains. Its activation is indicated by a red LED located on the back, informing of incorrect polarity of the conditioner's power supply or a defectively connected grounding.
The design of the PC-3SE EVO+ is based on a unique eight-stage filter architecture using the most advanced, uncompromising components. The conditioner is equipped with three autonomous filtering branches, serving separate three sections, consisting of four outlets each. This allows isolation of individual loads from mutual interference generated by connected devices using a common power line. The innovative two-stage power distribution system is based on massive distribution rails made of silver-plated OFHC C10100 oxygen-free copper bars of 99.997% purity. The first stage allows for lossless and even voltage distribution to the individual filter branches. The second stage delivers current directly to each quart of output sockets.
The company's semi-multistrand conductors with enlarged cross-section, made of silver-plated oxygen-free copper insulated with Teflon, are responsible for the transmission of current between the individual modules. These solutions ensure even and stable power distribution regardless of the load on the individual outputs of the conditioner. The company's anti-interference capacitors are responsible for the essential filtering of interference, and are manufactured to GigaWatt's strict specifications. Surge protection of the conditioner is provided by high-end elements with increased absorption and aging resistance.
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Our Summary
Product Strengths
- Audibly removes grain from the musical canvas to have all instruments and voices more visible and separated
- Extracts musical content and showcases it in a humane, palpable fashion
- Provides protection against interference and voltage spikes present in the home power grid, and filters current
- Improves the sound and protects the connected gear
Product Considerations
- May force all units to act in a certain way that is more generalized, instead of being able to listen to specialty cables, plugs, amps, rear, DAC, or streamer
- May kill a bit of personality of the connected components
- The unit is sensitive to vibrations and ideally belongs in an Artesania piece of furniture with dampeners, having it on a hard floor next to a speaker is a bad idea
Comparisons (according to reviewers)
- The PC-3 SE EVO+ gave up nothing versus Furutech RTP-6 passive, and merely shifted the subjective balance on the speed/body axis in favor of the latter
- The GigaWatt PC-3 SE EVO+ is not really better than the Acoustic Revive power strip, but it is also not worse, which is something special
- The PC-3 SE EVO+ is more evolved, more organic, more believable, and better in almost every aspect versus MIT Powerbar set
Takeaway: The GigaWatt PC-3 SE EVO+ improves the sound by audibly removing grain and showcasing the musical content. It also protects the connected equipment and could be worth buying if one is trying to get the best sound from their hifi system.
Video review
Our take on the brand
The Denali 6000/S v2 features patented technologies and proprietary components that are unavailable in any other competitive product. The Denali supplies unrestricted peak current to multiple components while dramatically reducing noise from the power line and intercepting noise from component-to-component interactions, isolating each component in the system. The Denali 6000/S is designed to provide the finest performance available, at a price-point intended to embarrass the competition.
The QR/BB™ module possesses the ability to act as an electric charge reservoir, meaning it stores and releases energy in a manner that improves a component's access to instantaneous current. Dynamics are actually improved reducing any sense of dynamic strain often heard from amplifiers that are connected with lesser power cables. The sonic result is a lifelike presentation of timing and dynamic contrasts in sound that cannot be replicated by ANY other means.
Traditional power conditioners are designed to block incoming noise from outside the home, but do not address the noise that is generated by the electronic components themselves. CCI™ (Component-to-Component Isolation) is one of the most significant but often overlooked aspects to power system performance. The CCI™ filter consists of a proprietary multi-stage filter that reduces electrical noise and interference generated by a component's power supply.
Our Summary
Product Strengths
- Reduces noise in the audio system, leading to a blacker background and improved clarity
- Enhances soundstage definition, making images more palpable and less diffuse
- Does not compress dynamics, providing sufficient power to amplifiers when needed
- Features proprietary technologies like QR/BB, NIC, and CCI for enhanced performance and protection
- Exceptional build quality, with a solid and flawless finish
- Features connectivity options for enhanced usage
Product Considerations
- Relatively expensive, with a price point that may seem high compared to some associated equipment
- May require a break-in period for optimal performance
- The looks are rather unassuming
- The Typhon T2 lacks the cable cradles that are on the Denali
Comparisons (according to reviewers)
- Denali v2 combines Triton v3-like high-current capability with superior noise reduction
Takeaway: The Shunyata Research Denali 6000/S v2 keeps your system safe and helps it perform its best by reducing noise and improving clarity. It is a well-crafted component designed to extract the best performance from connected components, providing peace of mind for audiophiles.
Video review
Our take on the brand
The compact depth of the enclosure reduces the footprint of the unit. More space at the rear allows for easier installation and cable connection. The conditioner has a rigid steel-aluminum chassis, with a modular design, allowing the installation of sockets of different standards. The chassis rests on anti-vibration feet, made of solid anodized aluminum, with an additional pad of the company's 3.5 mm thick elastomer. Modules with electronics have internal elastomer shock dampers to prevent the transmission of vibrations to the filter elements. In addition, the top cover is dampened with a bitumen-polymer composite mat.
The front panel of the conditioner, with a new design, is made of a thick slab of aircraft aluminum, the surface of which, after precise milling, is anodized in two color options – black or silver. In the central part there is an LED display indicating the value of the input voltage. The voltmeter is characterized by resistance to distortion and measurement errors caused by higher harmonics, while not generating any interference that could degrade the quality of the voltage filtered by the conditioner. The display, which has a fade-out option, is white as standard. Nine other colors are available on request
PowerControl has twelve, top-quality proprietary output sockets, with contacts of large surface area. The brass contacts are technically silver plated, with no intermediate metal layers such as copper or nickel, which could introduce unfavorable series resistance and voltage drop. The conditioner is also equipped with an additional circuit that signals if the device is incorrectly connected to the mains. Its triggering is indicated by a red LED located on the back, indicating that the conditioner's power supply is incorrectly polarized or the grounding is incorrectly connected. A 1.5m PowerSync PLUS power cord is standard equipment.
Our Summary
Product Strengths
- Offers adequate protection against surges and DC components
- Provides sufficient current efficiency for demanding setups
- Features twelve high-quality, silver-plated, zero contact resistance Schuko sockets (versions for other regions are available, too)
- Elegant appearance, even compared to more expensive GigaWatt conditioners
- More weighty and smoother sound
Product Considerations
- With the basic PowerSync Plus cable, the sound might be a bit darker and less detailed compared to the PC-3 SE EVO +
- A more expensive power cable may be needed to achieve higher fidelity
- Planning is required to manage the 12 power cables plugged into the device
Comparisons (according to reviewers)
- Compared to the GigaWatt PC-3 SE EVO +, the PC-3 SE EVO + offers better insight into deeper layers of music and higher energy, while the PowerControl focuses more on fluidity and coherence of the sound
- Compared to the GigaWatt PC-3 SE EVO +, the PC-3 SE EVO + renders a wider and deeper soundstage and a better differentiation of the layers, while the PowerControl gives a stronger impression of the performers' presence
Takeaway: The GigaWatt PowerControl is a versatile and great-looking device that protects components and ensures current efficiency. It focuses on the musical and emotional side of music, making listening enjoyable.
Video review
Our take on the brand
Our Summary
Product Strengths
- Effectively isolates the audio system from noise on the power line across all frequencies
- Improves the sense of effortlessness in the sound, resulting from low noise backgrounds
- Helps free up inner detail in a soundstage while retaining width and precision
- Does not diminish the power and dynamism of the music
- Includes a Gigabit Ethernet isolator with surge protection to shut out network noise
Product Considerations
- The suggestion to use every alternate output for a 'double-dose of isolation' implies standard use might not be optimal
- The unit's physical size is considerable, especially in the UK due to plug and fuse requirements
- Described as an 'amp-heavy, curved, and very dark grey box'—it is not designed to be visually appealing
Comparisons (according to reviewers)
- The Reference PowerIsolator isolates noise better than other power conditioners that focus on the 'minutiae of power conditioning'
Takeaway: The Transparent Reference PowerIsolator provides a solid barrier against power-related noise, enhancing overall audio performance by improving detail and soundstage without sacrificing power. The inclusion of Ethernet isolation makes it especially valuable in modern, networked audio systems.
Video review
Our take on the brand
What else competes at this price?
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Our Summary
Product Strengths
- Noticeably reduces background noise and provides dead silence when nothing is playing
- Offers tunable RF biasing with red and purple settings to optimize sound to your system and personal tastes
- Provides full current to all 8 outlets, allowing for no compromise when running multiple amplifiers
- Increases detail and resolution, expands the soundstage, and adds clarity to vocals
Product Considerations
- One reviewer found it so light that they needed to affix pads to keep it in place when adding or removing power cords
- The red setting is not optimal for electronic music, as it can become too light
Comparisons (according to reviewers)
- Compared to the Furman IT-Reference 15i, the PowerCell 8 SX provides immediately apparent improvements in detail, resolution, and soundstage, whereas the Furman IT-Reference 15i did not have any discernible difference in sound
- Compared to the original PowerCell8 SE, the PowerCell 8 SX has greater transparency, dynamics, inner detail, and resolution—which creates an actively engaging listening experience
Takeaway: The PowerCell 8 SX unlocks a system's potential by cleaning power and reducing noise. It offers tunable settings to optimize the sound for different music types.
Video review
Our take on the brand
Our Summary
Product Strengths
- The V5 models (Titan and Sigma) have a much nicer visual design and styling compared to previous EVO3 models, with a better match between the Titan and Sigma aesthetics
- The V5 Sigmas boasts an improved DCR design that brings it closer to the ideal of zero Ohms resistance, which ensures cleaner power delivery and more transparent/accurate audio reproduction
- The V5 Sigmas has seven independent outlets, each with its own dedicated clean power network
- The V5 Sigmas offers versatile outlet configuration with three high current, low impedance outlets (16A) and four medium current outputs (10A)
- The V5 Sigmas has a remarkable 35% improvement in amperage and a 40% increase in current handling capability due to decreased circuit resistance
Product Considerations
- The V5 Sigmas has a premium pricing which may not suit all budgets
- The V5 Titan bass may be a little bit tighter, which may be a problem for the EVO3 Titan because it was a little bit looser—it kind of adds a little bit more bloom and fat to the sound
- The V5 models are hard products to review, because reviewers have to keep powering down and breaking down the whole system to unplug everything, and then have to let it warm up again rinse and repeat multiple times
Comparisons (according to reviewers)
- V5 Titan bass was a little bit tighter than the EVO3 Titan, but the Evo III's bass, because it was a little bit looser, kind of adds a little bit more bloom and fat to the sound
- Unless it's used with an amp beyond the Sigmas scope, the V5 is arguably closer in performance to the EVO3 Titan
Takeaway: The Isotek V5 Titan and Sigmas improve a hifi system's sound, opening up the soundstage and giving a better listening experience. With cleaner power and stylish design, these products can make a system sound its best.
Video review
Our take on the brand
Our Summary
Product Strengths
- Significant audible difference to the hifi system
- The most affordable component in the reviewer's setup
- Well-made CNC machined case shields against wireless interference
- More stable mains voltage at late night
Product Considerations
- Priced at $2300 in the US and €2400 locally
Takeaway: The KECES IQRP-1500 power conditioner makes a noticeable and positive difference in the audio experience and makes the system more enjoyable. This is a worthwhile investment for those seeking cleaner power.
Video review
Our take on the brand
Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.
What reviewers think
Magazine reviewers and YouTubers have tried this product—so we've summarized their strongest opinions below.
Product Strengths
- Transient Power Correction (TPC) provides up to 55A peak current for power amps/integrated amps/subwoofers
- AC ground noise dissipation cleans AC power
- Non-sacrificial surge protection protects equipment from power surges up to 6000 volts or 3000 amps without sustaining damage
- A 'black background' in the music is created by lowering the noise floor, allowing for cleaner and clearer music
- The Niagara improves the sound of a high end system in terms of detail, rhythmic drive, palpable images, air, tuneful bass, and extended highs
Product Considerations
- Niagara products do not come with power cords, so one must supply their own
- The chrome faceplate on some Niagara models can pick up micro-scratches
- Sonic benefits may depend on the quality and resolving ability of the existing audio system
- The Niagara 3000 may not be compatible with all amplifiers' protection circuitry
Comparisons (according to reviewers)
- Compared to the AudioQuest Niagara 1200, the Niagara 3000 provides more octaves of level-x, differential-mode noise-filtering, banks of ground-noise dissipation, and transient power correction
- Compared to the AudioQuest Niagara 1200, a reviewer felt they were hearing just a bit more detail and an increase in soundstage height and width
Takeaway: The AudioQuest Niagara helps a system reach its full potential by lowering the noise floor and cleaning up the power. The Niagara can affect sound quality by improving the clarity and spaciousness of music.
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How to buy
Power Conditioners
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