Audio T Verdict
The IsoTek V5 Polaris provides six-way mains distribution, power cleaning and equipment protection within a compact bar that can sit discreetly behind an equipment rack.
Each outlet connects independently to the central circuit rather than being linked to the next socket in a conventional daisy chain. This is designed to reduce electrical noise passing between the components connected to the Polaris.
The UK version supports a combined load of up to 10A or 2,300W, making it suitable for many complete hi-fi, television and home cinema systems. Particularly demanding amplifiers, active speakers and subwoofers may be better matched with IsoTek’s higher-capacity V5 Sirius.
IsoTek specifies up to 35dB of RFI reduction, together with 45,000A of surge protection, a star-earthed internal layout and silver-plated high-purity copper wiring.
An EVO3 Initium power cable and wall-mounting bracket are included, making Polaris an accessible introduction to IsoTek’s V5 power-cleaning range.
IsoTek V5 Polaris Six-Way Mains Power-Cleaning System
The V5 Polaris is a compact mains power-cleaning and distribution bar for audio, home cinema and network-based systems.
It provides six UK mains outlets, with each socket connected independently to the central filtering circuit. This arrangement is designed to reduce incoming mains noise and limit electrical interference passing from one connected product into another.
Compared with the previous generation, IsoTek states that V5 Polaris offers substantially increased Differential Mode filtering, reduced electrical resistance and upgraded surge protection.
Six Independently Connected Outlets
Many conventional extension blocks connect their sockets in a simple sequence. While this distributes electricity, it can allow electrical noise created by one component to travel more easily into neighbouring equipment.
Each Polaris socket instead references the central power-cleaning circuit independently.
This layout is designed to reduce Differential Mode cross-contamination between the connected products and provide a consistent electrical path to each outlet.
Suitable for a Complete System
The six-outlet arrangement provides enough connections for many complete audio and home cinema systems.
A typical installation might include a network streamer, DAC, CD player, turntable power supply, integrated amplifier and television or powered subwoofer.
The complete system must remain within the shared 10A or 2,300W UK rating.
Typical Connected Equipment
- Network streamers and music servers
- CD and SACD players
- DACs and digital processors
- Preamplifiers and phono stages
- Turntable power supplies
- Integrated amplifiers
- Televisions and projectors
- Routers and network switches
10A or 2,300W Total Capacity
The UK V5 Polaris is rated at a maximum of 10A or 2,300W at 230V.
This capacity is shared across all six outlets and any equipment added through System Link. It is not available independently from every socket.
Add together the published mains consumption of all connected equipment before installation.
Check the Complete System Load
Use the mains consumption shown on the equipment, rear panel or manufacturer’s specification.
Do not calculate the electrical load using an amplifier’s quoted watts-per-channel output.
Using Polaris with an Amplifier
V5 Polaris can be used with many compatible integrated amplifiers and power amplifiers, provided the complete system remains within its 10A rating.
Its circuit is designed to maintain low resistance at the 50Hz mains frequency while presenting greater impedance to unwanted noise at higher frequencies.
Large power amplifiers, mono power amplifiers, active speakers and powerful subwoofers may require the greater current capacity of the 16A V5 Sirius.
Common Mode Mains Noise
Common Mode noise appears in relation to earth and frequently includes radio-frequency interference from wireless communications and nearby electrical equipment.
Routers, computers, televisions, chargers, smart devices and switch-mode power supplies all contribute to the electrical environment within a modern home.
The Polaris filtering circuit is designed to reduce this unwanted high-frequency energy before it reaches the connected system.
Differential Mode Mains Noise
Differential Mode noise appears between live and neutral and can be generated by the equipment connected to the power bar.
Digital sources, televisions and switch-mode power supplies may return electrical noise to the mains circuit even where the incoming household supply is relatively clean.
The independently connected outlet arrangement helps reduce the extent to which this interference passes between components.
Delta Filter Topology
V5 Polaris uses IsoTek’s delta filter topology to reduce electrical interference over a broad frequency range.
IsoTek publishes more than 20dB of power cleaning at 1kHz and approximately 42dB at 10kHz under its stated reference conditions.
The actual result will depend on the incoming supply, connected components, source impedance and frequency of the interference.
35dB Published RFI Reduction
IsoTek specifies overall radio-frequency interference reduction of up to 35dB for the V5 Polaris.
This provides a useful comparison with other IsoTek power products, while the level of reduction within an individual system will vary across different frequencies.
Polaris is a passive mains cleaner rather than a voltage regulator or power regenerator.
Reduced Component Cross-Contamination
Electrical noise can enter the system from the household mains supply, but it can also be produced by the connected equipment.
A digital source or network switch may return high-frequency switching noise to the circuit, while an amplifier creates a changing electrical load during operation.
Connecting every socket independently to the central filter is designed to reduce unwanted interaction between these products.
KERP Equal-Resistance Distribution
KERP stands for Kirchhoff’s Equal Resistance Path.
IsoTek uses this architecture to provide each outlet with a consistent electrical route to the central circuit rather than connecting the sockets one after another.
This helps maintain equal resistance and consistent power delivery across the six outlets.
Fully Star-Earthed Network
The protective-earth connections reference a central point within the Polaris.
This star-earth arrangement provides a common earth reference for the six connected products and can be retained when another compatible IsoTek product is added using System Link.
V5 Polaris must be connected to a correctly installed mains socket with a functioning protective-earth connection.
Silver-Plated Circuit Board
The central printed circuit board uses increased copper loading compared with a conventional low-cost extension block.
Its conductive paths are silver plated as part of IsoTek’s approach to maintaining low resistance and consistent current delivery.
All six outlets connect independently to this central circuit board.
Silver-Plated 6N Copper Wiring
The internal wiring uses a 2mm² multi-strand conductor design made from 6N oxygen-free copper.
IsoTek describes 6N copper as 99.9999% pure, with each strand silver plated to provide a highly conductive outer surface.
The multi-strand construction supports the Polaris’ current capacity while remaining suitable for its compact internal layout.
FEP Dielectric
The internal conductors are insulated using Fluorinated Ethylene Propylene, normally abbreviated to FEP.
FEP provides durable electrical insulation with a relatively low dielectric constant compared with materials used in many ordinary power products.
Similar materials are used within several IsoTek power cables, helping maintain a consistent approach through the mains connection.
45,000A Surge Protection
V5 Polaris includes IsoTek’s sequential and repeatable surge-protection network, with an instantaneous rating of 45,000A.
The protection is designed to respond progressively according to the scale of an incoming surge or voltage spike.
This can help protect the Polaris and suitably connected equipment, although no protection system can guarantee survival from every electrical event or a direct lightning strike.
Protection Has Practical Limits
Disconnect sensitive equipment during severe electrical storms where it is practical and safe to do so.
Surge protection should not be treated as an absolute guarantee against lightning or a serious fault within the household supply.
10A HRC Protection
The UK V5 Polaris uses 10A high-rupturing-capacity protection to establish its maximum current rating and protect against overload conditions.
If the protection operates, switch off and disconnect the connected equipment before checking the combined load and investigating any possible fault.
Never increase the fuse or protection rating in an attempt to support a larger system.
System Link Expansion
A System Link outlet allows another compatible IsoTek product to be connected without occupying a second wall socket.
The linked products retain a common star-earth reference, helping maintain a structured mains arrangement as the system grows.
System Link cables are available in several IsoTek cable ranges and must be selected to match the connection used by the additional product.
System Link Does Not Increase Capacity
Adding another IsoTek product does not increase the 10A or 2,300W available from the electrical supply.
The total load of the Polaris, linked unit and every connected component must remain within the ratings of the complete circuit.
EVO3 Initium Power Cable Included
V5 Polaris is supplied with a 1.5m IsoTek EVO3 Initium power cable.
Initium uses three 2.0mm² high-purity oxygen-free copper conductors and connects to the Polaris through its IEC C14 inlet.
The cable should reach the wall socket without tension, sharp bends or a tightly wound coil of unused cable.
Power-Cable Upgrade Options
The supplied Initium cable can be replaced with a compatible higher-performance IsoTek cable using the correct IEC C13 equipment connector.
Possible upgrades include EVO3 Premier and the shielded EVO3 Sequel.
The replacement cable must retain a correctly fused UK plug and sufficient electrical rating for the connected system.
Compact Installation
V5 Polaris measures 80mm wide, 50mm high and 510mm long.
Its narrow aluminium enclosure can sit behind an equipment rack, alongside furniture or on the floor where its sockets and mains inlet remain accessible.
The unit weighs approximately 1kg before the connected power cables are added.
Wall-Mounting Bracket Included
A wall-mounting bracket system is included for installations where the Polaris needs to be secured behind an equipment rack or suitable furniture.
The mounting surface and fixings must support the unit as well as the mechanical pull created by the connected plugs and cables.
Keep the mains inlet, protection and output sockets accessible for inspection and safe disconnection.
A Power Cleaner, Not a Regenerator
V5 Polaris passively filters and distributes the incoming mains supply.
It does not create a new mains waveform, stabilise the incoming voltage or provide the regeneration functions found in IsoTek’s Genesis products.
Its role is to reduce mains noise, limit cross-contamination and provide protected distribution for compatible equipment.
DC Blocking Is Not Included
Polaris does not remove direct-current offset from the incoming AC supply.
Where an amplifier or other component produces persistent transformer hum or mechanical vibration caused by DC contamination, a compatible IsoTek V5 Syncro Uni 10 may be placed ahead of the Polaris.
The complete system must remain within the capacity of both products.
Installation Guide
- Check the mains consumption of every component
- Keep the total connected load below 10A or 2,300W
- Position Polaris on a dry, stable surface or use the mounting bracket
- Keep the mains inlet and output sockets accessible
- Switch off and disconnect all equipment
- Connect the supplied EVO3 Initium cable to the IEC C14 inlet
- Connect each component to one of the six UK outlets
- Arrange plugs so they do not obstruct neighbouring sockets
- Avoid sharp cable bends and excessive tension
- Connect Polaris to a correctly earthed wall socket
- Switch on Polaris before the connected equipment
- Recalculate the total load whenever the system changes
What Might You Hear?
Reducing mains noise and electrical interaction between connected products may help a suitably revealing system reproduce low-level musical information more clearly.
Depending on the system and incoming supply, possible improvements can include cleaner bass definition, clearer separation, a quieter perceived background and more stable stereo imaging.
The scale of any change will depend on the mains supply, connected equipment and existing power arrangement. Our Audio T Swansea team explored the results in a real-world system in its IsoTek V5 Polaris and Syncro review.
V5 Polaris or V5 Gemini?
Choose V5 Polaris When
- Six outlets are required
- A complete system needs one power bar
- Several source and network products are connected
- The shared 10A capacity is sufficient
- An EVO3 Initium cable is required
Choose V5 Gemini When
- Only two outlets are required
- A simple source and amplifier system is used
- A smaller 270mm enclosure fits more easily
- The unit will extend an existing IsoTek setup
- The lowest-cost V5 option is preferred
The IsoTek V5 Gemini provides two independently connected outlets with the same 10A maximum capacity.
V5 Polaris or V5 Corvus?
Choose V5 Polaris When
- Six outlets provide enough connections
- A narrower power bar is easier to position
- The system uses fewer components
- The 10A capacity suits the equipment
- A more affordable option is preferred
Choose V5 Corvus When
- Nine outlets are required
- Several network and digital products need power
- A shorter but wider enclosure fits the installation
- The shared 10A capacity remains sufficient
- A larger system needs more connections
The IsoTek V5 Corvus expands the same broad design principles to nine output sockets.
V5 Polaris or V5 Sirius?
Choose V5 Polaris When
- 10A or 2,300W provides sufficient capacity
- The system uses modest amplification
- Six outlets are required
- A compact and affordable power bar is preferred
- An IEC C14 inlet suits the installation
Choose V5 Sirius When
- 16A or 3,680W capacity is required
- Large amplifiers or subwoofers are connected
- Stronger wide-band filtering is preferred
- A high-current IEC C20 inlet is appropriate
- The system justifies the higher specification
The IsoTek V5 Sirius provides six outlets with a higher 16A or 3,680W total capacity.
Related IsoTek Products and Audio T Guides
Key Features
- Six-way mains power-cleaning system
- Six independently connected UK outlets
- 10A maximum UK current
- 2,300W total capacity at 230V
- Central delta filter topology
- Designed to reduce Common Mode noise
- Designed to reduce Differential Mode noise
- 35dB published RFI reduction
- More than 20dB filtering at 1kHz
- Approximately 42dB filtering at 10kHz
- KERP equal-resistance distribution
- Fully star-earthed internal network
- Silver-plated printed circuit board
- 2mm² silver-plated 6N copper wiring
- FEP conductor dielectric
- 45,000A surge and spike protection
- System Link expansion connection
- 10A IEC C14 mains inlet
- 1.5m EVO3 Initium cable included
- Wall-mounting bracket included
- Compact aluminium enclosure
- Suitable for audio and AV systems
Frequently Asked Questions
How many outlets does V5 Polaris provide?
It provides six independently connected UK mains outlets plus one System Link connection.
What is the maximum UK current?
The maximum current is 10A across the complete Polaris.
What is the maximum wattage?
The six outlets share a total capacity of 2,300W at 230V.
Does every outlet provide 2,300W?
No. The 2,300W capacity is shared across all six sockets and any connected System Link equipment.
Can Polaris power an integrated amplifier?
Yes, provided the complete system remains within the shared 10A or 2,300W rating.
Is Polaris suitable for a large power amplifier?
It may be, but particularly demanding amplifiers and subwoofers may be better matched with the 16A V5 Sirius.
What is the published RFI reduction?
IsoTek specifies radio-frequency interference reduction of up to 35dB.
Does Polaris provide surge protection?
Yes. IsoTek specifies 45,000A of instantaneous surge and spike protection.
What are independent outlets?
Each socket connects directly to the central circuit, helping reduce electrical noise passing between connected products.
What is System Link?
System Link allows another compatible IsoTek product to be connected while maintaining a common star-earth reference.
Does System Link increase the available power?
No. All connected equipment remains subject to the Polaris rating and the limits of the household circuit.
Which power cable is included?
A 1.5m IsoTek EVO3 Initium power cable is supplied.
Does Polaris regenerate or regulate the mains?
No. It is a passive mains power-cleaning and distribution product.
Does it remove DC offset?
No. A suitable IsoTek Syncro Uni is required where DC contamination is causing transformer hum or vibration.
Can V5 Polaris be wall mounted?
Yes. A wall-mounting bracket system is included.
What are its dimensions?
It measures 80mm wide, 50mm high and 510mm long, with a weight of approximately 1kg.
Why Buy From Audio T?
- Specialist IsoTek demonstrations
- Complete system power-consumption checks
- Amplifier and source-component compatibility guidance
- Polaris, Corvus and Sirius comparisons
- System Link expansion advice
- Power-cable upgrade recommendations
- Wall-mounting and installation guidance
- Home demonstrations where available
- Ongoing system and setup support
Contact your local Audio T store to confirm whether the V5 Polaris provides the right capacity and outlet arrangement for your system.