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
- 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.
All
Powerzone 3
reviews

Manufacturer details
- HAFNERTECH™ by Paul Hafner
- SmartStack™ by Meneta Group
- PowerZone 3.10 UK
- Powerzone 3.20 UK
- Powerzone 3.10 US
- Powerzone 3.20 US
- Powerzone 3.10 EU
- Powerzone 3.20 EU
- Designed and built in Denmark
- PowerZone 3.10 has 1x8 high quality Furutech outlets
- PowerZone 3.20 has 2x4 high quality Furutech outlets
- PowerZone 3.10 is equipped with 1 HAFNERTECH™ module
- PowerZone 3.20 is equipped with 2 HAFNERTECH™ modules
- PowerZone 3.10 is rated for 20 amp, and can handle a full system including Apex Stereo
- PowerZone 3.20 is rated for 40 amp, and can handle a full system including Apex Mono
- EU CE Approved
- PowerZone 3.10:
- Dimensions (WxHxD) : 486 x 125 x 285 mm
- Net. Weight 10.9 kg
- Shipping dim.: 61 x 39 x 28 cm
- Shipping weight: 19.5 kg
- PowerZone 3.20
- Dimensions (WxHxD) : 486 x 125 x 285 mm
- Net. Weight 11.9 kg
- Shipping dim.: 61 x 39 x 28 cm
- Shipping weight: 20,6 kg
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:
- Gryphon amplifiers use a distinctively robust power supply featuring custom-made toroidal transformers and substantial filter capacitance, contributing to exceptional dynamic headroom and speaker control.
- The brand's industrial design, originally led by Flemming Rasmussen, combines bold aesthetics with practical functionality, creating visually striking components with user-friendly interfaces.
- Gryphon prioritizes short, direct signal paths and minimal internal wiring to maintain signal purity and transparency, enhancing sonic performance by reducing potential noise and interference.
- They offer modular designs with optional phono stage and DAC modules, allowing customers to tailor their components to their specific system needs and upgrade in the future.
Select products
Diablo 333
- Positioning: Gryphon's top integrated amplifier, succeeding the Diablo 300.
- Description: Integrates advanced technologies from Gryphon's flagship models, offering enhanced musicality and power. Features a dual mono configuration and optional phono and DAC modules, providing flexibility and high compatibility with various audio systems. This amplifier is ideal for users with a higher budget who desire a compact yet powerful system for larger rooms.
Essence
- Positioning: The entry-level high-end power amplifier in Gryphon's lineup.
- Description: Offers pure Class A operation with a focus on sonic neutrality and dynamic ease, making it ideal for small to medium-sized rooms. Features a dual mono design with separate power supplies for the output and driver stages, which is a step up from integrated designs like the Diablo 333.
Antileon Evo
- Positioning: A mid-tier power amplifier known for its high current capability.
- Description: Excels in delivering high instantaneous current, ensuring compatibility with demanding loudspeakers, which is a significant advantage over the Essence. Uses pure Class A bias and features a dual mono configuration, offering superior control and speed.
Mephisto
- Positioning: A high-end power amplifier designed for the most demanding audiophiles.
- Description: Offers exceptional current delivery and stereo separation, making it ideal for large rooms and high-end audio setups. Features a dual mono design with separate power supplies, providing superior channel separation and control compared to the Antileon Evo.
Apex
- Positioning: Gryphon's flagship power amplifier, representing the pinnacle of their design and engineering.
- Description: Delivers immense power and refinement, capable of driving any loudspeaker with ease. Features pure Class A operation with a massive power reserve, surpassing the capabilities of the Mephisto. This amplifier is for those with an unlimited budget who demand the absolute best in audio performance and are willing to invest in a statement piece for their audio system.
Our take on the brand
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Used
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What if you spend more?
What competes at this price?
Our Summary
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.
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
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Our Summary
Video review
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