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
- Generates a precise 60Hz sine wave, essential for audio equipment
- Eliminates noise and distortion from the AC line signal, providing clean power
- Improves sound by making events better delineated and instrument outlines more vivid
- Connectivity options are not included in the product strengths
Product Considerations
- The European 230V version has 8 Schuko sockets with a total output capacity of 900VA, so users should consider the power demands of their equipment
- The certification process was very difficult and took 1.5 years
Comparisons (according to reviewers)
- Compared to using a Nordost Qb8 distributor, the PS-1250 made voices in an a cappella piece dynamically flatter, a bit bleached, and two-dimensional
Takeaway: The PS-1250 delivers clean and stable power, improving the clarity and detail in music reproduction. It is a worthwhile addition to an audio system, especially for those seeking enhanced sound quality through refined power delivery.
How useful are hifi reviews? We consider them useful for three things: (1) Surfacing new products you should demo in person at a dealer. (2) Learning which products reviewers unanimously praise as the best they've ever heard (this means they probably are legitimately great). (3) Identifying a product's unique attributes that satisfy your idiosyncratic needs and tastes. Beyond that, we discount what reviewers say because they heap praise on everything—rarely being negative for fear of souring relationships with manufacturers. Further, they seldom have more than a couple products on-hand at once, relying on their imperfect memories to compare to past products.
Video Review
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.
A-48S
- Positioning: The entry-level Class A stereo power amplifier in Accuphase's lineup.
- Description: Offers excellent sound quality with its 6-parallel push-pull MOS-FETs, providing 50 W into 8 ohms. Compared to the A-80, it has a slightly lower power output but maintains a high damping factor of 1,000, making it suitable for small to medium-sized rooms and those with a moderate budget.
A-80
- Positioning: A mid-range Class A stereo power amplifier, developed as a stereo version of the A-300.
- Description: Delivers a refined sound with its 10-parallel push-pull MOS-FETs, offering 65 W into 8 ohms. It provides more power than the A-48S.
P-4600
- Positioning: A mid-range Class AB stereo power amplifier in Accuphase's lineup.
- Description: Features 6-parallel push-pull power transistors, delivering 150 W into 8 ohms. It offers a higher power output than the A-80, with a damping factor of 800.
A-300
- Positioning: A high-end Class A monophonic power amplifier, marking Accuphase's 50th anniversary.
- Description: Features 20-parallel push-pull power MOS-FETs, providing 125 W into 8 ohms. It offers superior performance compared to the A-80.
P-7500
- Positioning: The flagship Class AB stereo power amplifier in Accuphase's lineup.
- Description: Uses a 10-parallel push-pull power transistor architecture, delivering 300 W into 8 ohms. It surpasses the P-4600 in power and performance, with a damping factor of 1,000.
See all the brand's products
Read the reviews
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An excellent review of a great product
/
Publisher
/
3/1/2022
An excellent review of a great product
Publisher
/
3/1/2022
PS-1250
images
No items found.
Manufacturer's notes
The power supply delivers the energy your audio equipment uses for music playback. Accuphase's Clean Power Supply components provide a power source with minimum noise and distortion by utilizing a groundbreaking waveform shaping technology that compares the power supply's waveform to a reference waveform, then supplements insufficiencies and removes any excess misshaping. The results of waveform shaping are then observable in a new waveform display. The PS-1250 delivers impressive improvements in audio quality, making it an essential supplement to fine audio equipment.
Manufacturer Specs
- Input /output waveform display
- Output power meter
- Input/output voltage meter
- Input/output distortion meter
- Massive output capacity
- 0.08% total harmonic distortion waveform shaping
- High-grade output voltage correction
- Numerous output terminals
- High-sensitivity protection circuitry
- Large high-efficiency toroidal transformer
- Large filtering capacitors
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Average Price
$500
Used Products
83
Available (Scroll Down)
Brand Popularity
142
of 600+
Badges
Top 50 Brand
Top 250 Brand
Products
21
Founded
1972
Our take on the brand
Accuphase is a highly respected Japanese amplifier brand, renowned for its ability to deliver lifelike sound reproduction. Their amplifiers are known for their exceptional phase coherence, which creates an engaging, natural listening experience that appeals to musicians and audiophiles alike.
Brand Page
Most data on ExtremeHiFi is proprietary—researched and reviewed after thousands of hours of loving labor. We archive our site's data and its pages on Archive.org and take legal action against those repurposing the data. We also fingerprint data to know when text and numbers came from us first.
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Used
Accuphase
What if you spend a bit more?
Route Master
700
700
/
1
Reviews
Puritan
Provides the shortest and most coherent route to a common star grounding point for all the components that form an audio or audio visual system.
Puritan Audio Labs' PSM156 power conditioner eliminates transformer hum by removing DC from the power line through 52 stages of filtration, and includes an unusually flexible power cord that's easier to handle than typical stiff cords. Their GroundMaster system uses a simple copper rod grounding method to reduce electrical noise, offering a more affordable alternative to similar high-end products.
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Our Summary
Product Strengths
- Improves purity of tonality, reduces the noise floor, increases dynamics, and creates a more open soundstage
- Isolates the grounding grid
Product Considerations
- Requires either the GroundMaster or GroundMaster City to function
Takeaway: The RouteMaster, when combined with the GroundMaster or GroundMaster City, significantly enhances audio quality by improving tonality and spatial qualities. It is considered an amazing bargain in high-end audio due to its performance relative to its cost
Video review
Our take on the brand
Puritan Audio Labs' PSM156 power conditioner eliminates transformer hum by removing DC from the power line through 52 stages of filtration, and includes an unusually flexible power cord that's easier to handle than typical stiff cords. Their GroundMaster system uses a simple copper rod grounding method to reduce electrical noise, offering a more affordable alternative to similar high-end products.
Visit our
Route Master
page
Product Page
PS106DC
950
950
/
1
Reviews
Puritan
Progressing up from the Power Bricks, Puritan Power Strips add additional componentry for the more stubborn aspects of differential mode interference and provide two additional output sockets, all in an extremely robust heavy steel magnetically shielding casing with a substantial aluminium top face. Incorporating 6 x 15Amp outlets, 23 discrete filter elements and enhanced differential mode treatments, plus with DC offset correction an option, Power Strips are a great solution if you cant quite stretch to a Studio Master or prefer the slender ergonomics of the Strip types.
Puritan Audio Labs' PSM156 power conditioner eliminates transformer hum by removing DC from the power line through 52 stages of filtration, and includes an unusually flexible power cord that's easier to handle than typical stiff cords. Their GroundMaster system uses a simple copper rod grounding method to reduce electrical noise, offering a more affordable alternative to similar high-end products.
Expand Details
Our Summary
Product Strengths
- Multiple cumulative sympathetically-tuned stages of purification with 19 independent elements are included
- 6 x 15A outlets each with independent re-filter stages eliminate cross contamination between connected equipment
- Direct maximum power routing to all outputs realizes full dynamic performance
- Cleansed earth removes noise from the earth, and star earthing eliminates ground loop hum, reduces the noise floor, and improves definition
- Massive 30'000A of three-dimensional surge protection
Product Considerations
- The overall limit for all outputs combined is 15 amperes
Comparisons (according to reviewers)
- Vs Furutech RTP-6 & e-tp80 passive power strips: The reviewer suggests that even one lightning strike would make the difference clear, implying the PS106-DC is expected to be better than the passives due to its active AC/DC filtering
Takeaway: The PS106-DC power strip has good filtration and surge protection. It is designed to improve hifi equipment performance through clean power delivery.
Video review
Our take on the brand
Puritan Audio Labs' PSM156 power conditioner eliminates transformer hum by removing DC from the power line through 52 stages of filtration, and includes an unusually flexible power cord that's easier to handle than typical stiff cords. Their GroundMaster system uses a simple copper rod grounding method to reduce electrical noise, offering a more affordable alternative to similar high-end products.
Visit our
PS106DC
page
Product Page
Temple Constrictor
567
567
/
1
Reviews
TCI Cables
TCI Cables designs and handmakes their cables in the UK, using aerospace technology and materials like silver-plated copper conductors with PTFE and Kapton tape insulation. The brand stands out by designing their own termination plugs and offering custom cable lengths and unusual terminations, along with specialized RFI filtering mains leads to reduce noise and improve sound quality.
Expand Details
Our Summary
Product Strengths
- Provides a solid foundation for plugging in mains leads without interfering with the incoming mains, delivering clean power.
- Results in good, tight bass and fluidity, and more resolving sound with much more detail and tighter bass information.
- Provides a larger and more precise soundstage.
- Has a noticeable effect on timing—having the effect of endowing the music with a pleasing flow and without any harshness in the upper registers, making for a very easy and non-fatiguing listening experience.
- Excellent design and solid build quality using quality components that will last for years
Product Considerations
- Some purists would argue that adding a power switch defeats the object of a high-quality unit
Takeaway: The TCI Cables Temple Constrictor SE power block delivers clean power effectively, providing a solid foundation for the hifi system. The power block enhances the sound quality with improved detail, tighter bass, and a wider soundstage, so it can give great value to the sound.
Video review
Our take on the brand
TCI Cables designs and handmakes their cables in the UK, using aerospace technology and materials like silver-plated copper conductors with PTFE and Kapton tape insulation. The brand stands out by designing their own termination plugs and offering custom cable lengths and unusual terminations, along with specialized RFI filtering mains leads to reduce noise and improve sound quality.
Visit our
Temple Constrictor
page
Product Page
Dectet
749
749
/
1
Reviews
PS Audio
The Dectet is an active three zone, ten outlet power center that produces clean, unrestricted AC power for an entire high-end audio or video system. It is designed to power and fully protect your entire system with improved dynamics, increased harmonic integrity, and an open, spacious soundstage that can be breathtaking. Filtration is handled through large core high permeability magnetic devices wound with heavy gauge OFC providing both common mode and differential mode filtering you can both measure and hear. Protection is through both microprocessor controlled over/under voltage surge guard and MOV spike that will always make sure your equipment is fully protected.
PS Audio is a well-known American brand with a strong following among enthusiasts, due in part to the educational YouTube videos produced by its founder. The company offers products across a wide range of categories, each developed with input from top engineers, resulting in unique sonic signatures. PS Audio’s offerings frequently appear on top 10 lists from professional reviewers, with many products recognized for their high-quality performance and innovative design.
Expand Details
Our Summary
Product Strengths
- Very well built with heavy gauge aluminum extruded case and high quality parts
- Provides three independently filtered Iso-Zones
- Offers microprocessor controlled under-voltage and over-voltage protection with automatic reset
- Provides surge and spike protection
- Improved performance enough to be detectable at first listen
Product Considerations
- The MOVs will need to be replaced to restore full protection after they sacrifice completely while absorbing a surge
- The provided power cable can be viewed as a complimentary starting point
- Dectet will shut down if MOVs sacrifice completely while absorbing a surge
Takeaway: The Dectet Power Center is a well-made product using high quality parts, and is rugged, delivering a specific level of power conditioning and protection. It delivers improvements that are detectable.
Video review
Our take on the brand
PS Audio is a well-known American brand with a strong following among enthusiasts, due in part to the educational YouTube videos produced by its founder. The company offers products across a wide range of categories, each developed with input from top engineers, resulting in unique sonic signatures. PS Audio’s offerings frequently appear on top 10 lists from professional reviewers, with many products recognized for their high-quality performance and innovative design.
Visit our
Dectet
page
Product Page
What else competes at this price?
Ground Master
290
/
Released
Puritan
The Ground Master eliminates all of the problems typically associated with the connection of additional earthing rods (or other buried metalwork) into an audio and/or audio visual system, and allows for a simple, economical, and substantial upgrade to your listening and viewing experience.
Puritan Audio Labs' PSM156 power conditioner eliminates transformer hum by removing DC from the power line through 52 stages of filtration, and includes an unusually flexible power cord that's easier to handle than typical stiff cords. Their GroundMaster system uses a simple copper rod grounding method to reduce electrical noise, offering a more affordable alternative to similar high-end products.
Expand Details
Our Summary
No items found.
Product Strengths
- Improves clarity and removes 'grunge' from the hifi system
- Lowers the noise floor, resulting in enhanced clarity, cleaner and tighter bass, and a bigger, wider sound with more depth
- Provides each component in the system with its own ground, offering a safe and effective grounding solution
- Offers improved sound quality with more subtlety, finesse and polish
Product Considerations
- Installation may be impractical for apartment dwellers
- Requires hammering a copper rod into the ground, which some may find odd or inconvenient
- A reviewer notes that the wire attachment to the grounding rod in the photos is incorrect, which can result in poor contact
Takeaway: The Ground recdkgkQJRyhTtWJY helps to make music sound better by getting rid of unwanted noise and making the sound clearer. It's a good way to improve a hifi system and get more out of music.
Video review
Our take on the brand
Puritan Audio Labs' PSM156 power conditioner eliminates transformer hum by removing DC from the power line through 52 stages of filtration, and includes an unusually flexible power cord that's easier to handle than typical stiff cords. Their GroundMaster system uses a simple copper rod grounding method to reduce electrical noise, offering a more affordable alternative to similar high-end products.
Visit
Ground Master
Page
Product Page
DC Block 6
499
/
Released
2022
Audiolab
The DC Block 6 has been designed to improve the quality of AC electricity that feeds our audio and AV systems. Mains electricity has a fundamental influence on the audio signal as it passes through a system, from source to amplifiers to speakers. The mains supply in a typical home is subject to interference induced by a range of issues, causing the AC waveform to distort before it reaches each component. This creates noise in the audio signal, which degrades sound quality – a situation that continues to worsen with more and more electrical devices being added to the home mains supply.
Audiolab is a hifi brand known for its unique streaming platform from Pixel Magic, which enables over-the-air updates and wide audio format compatibility including DSD. Their amplifiers and components feature distinctive capabilities like HDMI ARC inputs, user-selectable digital filters for sound customization, and advanced filtering technology in their pre/power amps.
Expand Details
Our Summary
No items found.
Product Strengths
- Eliminates DC offset, reducing transformer hum
- Reduces RFI and EMI contaminants from the main supply
- Improves spatial awareness, enhances dynamic contrast, and provides blacker backgrounds
- Has universal voltage compatibility (100-240V)
Product Considerations
- The standard DC block is not suitable for amplifiers with high power output—over 300 watts total
- The included cables are of cheap quality
- The DC Block 6 has a substantial size—444mm width
- The DC Block 6 might not allow the use of existing power cords due to the connector type
Takeaway: The Audiolab DC products are effective in removing DC humming problems. If there is a noticeable hum from an amp, the DC products are recommended to help improve sound quality.
Video review
Our take on the brand
Audiolab is a hifi brand known for its unique streaming platform from Pixel Magic, which enables over-the-air updates and wide audio format compatibility including DSD. Their amplifiers and components feature distinctive capabilities like HDMI ARC inputs, user-selectable digital filters for sound customization, and advanced filtering technology in their pre/power amps.
Visit
DC Block 6
Page
Product Page
DC Block
499
/
Released
2021
Audiolab
The DC Block has been designed to improve the quality of AC electricity that feeds our audio and AV systems. Mains electricity has a fundamental influence on the audio signal as it passes through a system, from source to amp to speakers. The mains supply in a typical dwelling is subject to interference induced by a range of issues, causing the AC waveform to distort before it reaches each component. This creates noise in the audio signal, which degrades sound quality – a situation that continues to worsen as the electrical devices we use in our homes proliferate.
Audiolab is a hifi brand known for its unique streaming platform from Pixel Magic, which enables over-the-air updates and wide audio format compatibility including DSD. Their amplifiers and components feature distinctive capabilities like HDMI ARC inputs, user-selectable digital filters for sound customization, and advanced filtering technology in their pre/power amps.
Expand Details
Our Summary
No items found.
Product Strengths
- Removes DC current interference, improving sound quality
- Can improve the width, depth, and space around instruments in the soundstage
- Offers a definition shift, enhancing subtleties in music
- Represents a cost-effective upgrade, delivering significant sonic improvement for its price
Product Considerations
- The degree of improvement depends on the existing quality of the mains supply
- The difference it makes might be nuanced rather than a drastic change
- It's not making an expensive amplifier better because it's a bad design—it's just cleaning what's going in
Comparisons (according to reviewers)
- Made a larger sonic difference than some speaker upgrades or changes
Takeaway: The Audiolab DC Block is a device that cleans power, improving the sound by removing unwanted noise. It is a worthwhile addition to a hifi setup for cleaning the signal and giving a better listening experience.
Video review
Our take on the brand
Audiolab is a hifi brand known for its unique streaming platform from Pixel Magic, which enables over-the-air updates and wide audio format compatibility including DSD. Their amplifiers and components feature distinctive capabilities like HDMI ARC inputs, user-selectable digital filters for sound customization, and advanced filtering technology in their pre/power amps.
Visit
DC Block
Page
Product Page
Constrictor
277
/
Released
TCI Cables
TCI Constrictor Powerblock use advanced construction and materials to create a cable that filters RFI interference being transmitted down internal house wiring. Effecting upto 6 pieces of equipment, the TCI Constrictor 6 way powerblock represents excellent value for money.
TCI Cables designs and handmakes their cables in the UK, using aerospace technology and materials like silver-plated copper conductors with PTFE and Kapton tape insulation. The brand stands out by designing their own termination plugs and offering custom cable lengths and unusual terminations, along with specialized RFI filtering mains leads to reduce noise and improve sound quality.
Expand Details
Our Summary
No items found.
Product Strengths
- Connection provided for up to six components
- Features a 2.4m-long Constrictor cable that incorporates RFI filtering
- The conductors in the cable are made from 8x PTFE-insulated silver-plated, OFC wires
- The wires are braided in a non-inductive and self-screening construction to provide the RF rejection and filtering
- Effective in operation—the Constrictor mains power block makes a practical and worthwhile addition to a home hifi setup
Comparisons (according to reviewers)
- The connections on the Constrictor block are noticeably more secure than those on a standard block with simple sprung metal strips
- With the Constrictor in place, the reviewer was conscious of a lower noise floor compared to a standard six-way mains distribution block
Takeaway: The TCI Cables Constrictor power block can connect up to six components and has a cable with RFI filtering, making it a practical addition to a home hifi setup. It helps improve sound quality by lowering the noise floor.
Video review
Our take on the brand
TCI Cables designs and handmakes their cables in the UK, using aerospace technology and materials like silver-plated copper conductors with PTFE and Kapton tape insulation. The brand stands out by designing their own termination plugs and offering custom cable lengths and unusual terminations, along with specialized RFI filtering mains leads to reduce noise and improve sound quality.
Visit
Constrictor
Page
Product Page
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
- Generates a precise 60Hz sine wave, essential for audio equipment
- Eliminates noise and distortion from the AC line signal, providing clean power
- Improves sound by making events better delineated and instrument outlines more vivid
- Connectivity options are not included in the product strengths
Product Considerations
- The European 230V version has 8 Schuko sockets with a total output capacity of 900VA, so users should consider the power demands of their equipment
- The certification process was very difficult and took 1.5 years
Comparisons (according to reviewers)
- Compared to using a Nordost Qb8 distributor, the PS-1250 made voices in an a cappella piece dynamically flatter, a bit bleached, and two-dimensional
Takeaway: The PS-1250 delivers clean and stable power, improving the clarity and detail in music reproduction. It is a worthwhile addition to an audio system, especially for those seeking enhanced sound quality through refined power delivery.
How useful are hifi reviews? We consider them useful for three things: (1) Surfacing new products you should demo in person at a dealer. (2) Learning which products reviewers unanimously praise as the best they've ever heard (this means they probably are legitimately great). (3) Identifying a product's unique attributes that satisfy your idiosyncratic needs and tastes. Beyond that, we discount what reviewers say because they heap praise on everything—rarely being negative for fear of souring relationships with manufacturers. Further, they seldom have more than a couple products on-hand at once, relying on their imperfect memories to compare to past products.
Video Review
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