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
Bloggers and YouTubers have tried this product—so we've summarized their strongest opinions below. Links to full reviews follow.
Product Strengths
- Improves sound quality by removing subtle grain, leading to a purer reproduction of sound
- Enhances dynamics and impact, allowing music to flow more freely and organically
- Effectively eliminates noise from the powerline, as demonstrated by removing a surging buzz in one system
- Offers surge protection and overload protection without throttling current flow
- Features high-quality components such as proprietary power sockets, RLC filtering blocks, and silver-plated copper wiring, ensuring robust and clean power delivery
Product Considerations
- May require a 'settling in' period to reach its optimal performance
- The choice of power cable can influence the sound signature, requiring experimentation to match system needs
- Careful cable management is needed to avoid cable chaos, due to the size and number of outlets
- The initial investment may be significant
Comparisons (according to reviewers)
- Vs PC-3 SE EVO+—the PC-4 EVO+ '21 offers better differentiation in individual groups of instruments at the micro level
Takeaway: The PC-4 EVO+ offers a clean and robust power solution for high-end audio systems, enhancing sound quality and dynamics by eliminating noise and removing restraints, making the music more engaging. It is a well-built, top-class product that improves the overall listening experience.
All
PC-4 EVO+
reviews

Manufacturer details
Output Sockets:
- EU (Schuko)
- US (Nema 5-20R)
- AU (AS/NZS 3112)
Supply Voltage:
- 220-240 VAC, 50/60 Hz
- 110-120 VAC, 50/60 Hz
Maximum Load:
- 3,680 W
Maximum Current (Continuous):
- 16 A
Current Surge Absorbed:
- 22,000 A
Dimensions (W x D x H):
- 440 x 400 x 170 mm
Gross Weight:
- 10 kg
All internal components of the conditioner are enclosed in an ultra-rigid, non-magnetic aluminum chassis. To reduce vibrations transmitted to the conditioner, the top cover was additionally damped with a bitumen-polymer composite mat. The conditioner rests on reference anti-vibration feet – Rolling-Ball Isolation System. This system is minimizing the number of contacting points between the foot, the conditioner's case and the floor. It results into a sigificant reduction of mechanical vibrations which have a negative affect on the conditioner's internal components, degrading the sound. Another isolation element, on which the whole construction is supported, is the proprietary ela...
Brand highlights
Taking a step back to look at reviewers' thoughts of the brand's entire lineup—not just this product—what stands out most is the following:
- GigaWatt's products, from power conditioners to accessories, are designed and manufactured in-house in Poland, allowing for stringent quality control and customization of components.
- The brand emphasizes a "no bottleneck" design, utilizing oversized internal components like massive copper rails and custom-made breakers to ensure unrestricted current flow, even under peak loads.
- GigaWatt employs proprietary technologies like their DC Offset Blocker and compensation batteries to improve power factor and impulse response, differentiating them from standard filtering approaches.
- They offer a range of power cables designed to synergize with their conditioners, allowing users to fine-tune the sonic characteristics of their system, from a more detailed sound to a more musical one.
Select products
PowerPrime Power Line Conditioner
- Positioning: Entry-level line, designed for affordability and compactness.
- Description: Offers effective surge protection and clean energy supply, making it ideal for small audio/video systems. Its compact size and DC-Blocker feature set it apart from higher-end models like the PC-4 EVO+, which offer more outlets and advanced filtering for larger setups.
PC-2 EVO+ Premium Power Line Conditioner
- Positioning: Mid-range option for Hi-Fi audio and video systems.
- Description: Features advanced eight-stage filter architecture, making it suitable for mid-sized systems. Unlike the PowerPrime, it offers more robust construction and better interference suppression, though it lacks the extensive connectivity of the PC-4 EVO+.
PowerControl Power Line Conditioner
- Positioning: Compact high-performance model for versatile use.
- Description: Combines features from both entry-level and premium models, offering 12 outlets and advanced filtering similar to the PC-4 EVO+. Its compact design works well for users needing high functionality in limited spaces, unlike the larger PowerMaster.
PC-4 EVO+ Reference Power Line Conditioner
- Positioning: High-end model for demanding audio systems.
- Description: Features superior protection and offers more advanced filtering and connectivity than the PC-2 EVO+, but at a higher price point.
PowerMaster Flagship Reference Power Conditioner
- Positioning: Flagship model for ultra high-end systems.
- Description: Features extreme durability and performance, supporting up to 12 devices. It surpasses the PC-4 EVO+ with its advanced internal architecture and higher current capacity.
Our take on the brand
Look inside the brand
Our interview with the brand
What are two key technological innovations or strong opinions that differ you from other brands?
What's your approach to customer support?
We try to pass on our knowledge to every distributor. They should pass on to dealers, and they should pass on to customers. But not everyone remembers everything. Therefore, every customer can also contact us directly.
In addition to standard warranty care, we also take care of older devices. We treat each case individually and always try to help. Even if the damage was caused by the user's negligence. We also offer upgrades for older models. We introduce a lot of improvements - for example, the latest models in the PC series: PC-2, PC-3, PC-3SE, PC-4, have 90% new components compared to those manufactured 10 years ago. So every owner of older generation device can upgrade their model to the latest specification.
What are your favorite tracks for showcasing the strength of your products?
What other products pair best with yours?
What if you spend more?
What competes at this price?
Our Summary
Video review
Our take on the brand
Our Summary
Product Strengths
- Provides cleaner, more stable power to high-end components
- Improves color saturation and transparency
- Increases soundstage depth, width, and height
- Makes the music more real and live
- Lowers the noise floor, allowing more low-level detail to be reproduced, and a more coherent AC sine wave to be supplied to the equipment
Product Considerations
- The Stromtank S 1000 emits a quiet hum
- The 450VA continuous output power is not sufficient to deliver full power via some monoblock amplifiers
- The batteries will last roughly 15 years before energy storage drops by 20% if recharged once per day
Comparisons (according to reviewers)
- Compared to the AudioQuest Niagara 7000, the S-1000 provides more silence and space, and allows reverb around vocals to be more discernible
- With Stromtank battery power, the Dan D'Agostino's ability to convey detail increased to darTZeel levels, and its soundstage magic increased
Takeaway: The Stromtank S-1000 helps reveal the full potential of audio components by providing cleaner power, resulting in a more engaging and detailed listening experience. It can make a significant and noticeable improvement to soundstage depth and clarity.
Video review
Our take on the brand
Our Summary
Product Strengths
- All the instruments became clearer and better focused with the PowerZone in the system, with noticeable bass improvement
- The PowerZone optimizes the electrons' vibrational flow and minimizes spurious resonances and the distortions they create
- Music playback was described as 'more comfortable' with familiar recordings delivering increased width and depth
- The PowerZone helps the signal flow in a natural way, by using a better adapted environment
Product Considerations
- The PowerZone 3 is an expensive product
- The review mentions the reviewer changed two things at once in a demo: adding the conditioner and changing power cables
- The reviewer notes that the theory behind power products and how they work in tandem with a system is impossible to predict
Comparisons (according to reviewers)
- Vs PS Audio P20: The PowerZone produced a very different experience, with one friend commenting 'Where did the bass come from?'
Takeaway: The Gryphon PowerZone 3 can improve the clarity, focus, and bass of a high-end audio system, resulting in a more comfortable and enjoyable listening experience. It is an effective addition to power conditioning products.
Video review
Our take on the brand
Questions? Ask the brand's dealers.
How to buy
Power Conditioners
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