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ISOL-8 MiniSub Axis
*Mains conditioning products (for entire system)
Isol-8 MiniSub Axis (silver or black front) - Spike & surge protection, Separate Transmodal filtering, DC blocking
The MiniSub has always been at the heart of ISOL-8, providing class leading performance at an affordable price. Improving the MiniSub was a real challenge, thousands of satisfied MiniSub owners across the world proved that it was going to be a difficult act to follow. Through careful development and adaptation we have managed to incorporate many of the innovative technologies found in the highly regarded flagship ISOL-8 SubStations, taking the all new MiniSub Wave and MiniSub Axis a substantial step forward whilst remaining outstanding value for money.
The MiniSub Axis has exactly the same layout and filter complement as the MiniSub Wave but takes performance another step forward with the addition of Axis DC blocking. A significant DC component is commonly found on the mains power supply. It affects the crucial magnetic circuit of your equipment’s AC power supplies, degrading system performance and causing acoustic noise through mechanical vibration. The MiniSub Axis ensures your system will be free of any of the negative effects of DC on the mains.
We take pride in continuing to bring our outstanding build quality to the new MiniSubs, making them an investment that provides unbeatable performance and will last a lifetime. Inside the quality casework you will find the same carefully auditioned polypropylene capacitors, Mundorf OFC inductors, high grade connectors, and custom ISOL-8 chokes that are found in our high end audiophile products. You will also have the peace of mind that comes with our spike and surge protection. All ISOL-8 products are designed and manufactured in the UK and come with a five year guarantee in the UK.
The result of an extensive development program, the next generation of the MiniSub takes its class leading performance to a whole new level in every area, helping your system to fulfil its maximum potential every time you listen.
DC on the Mains.
Power supplies in Hi-Fi and AV equipment often assume connection to a perfect mains supply. In theory the mains waveform should be pure AC: a perfect, symmetrical sine wave.
Many of the myriad appliances connected to the supply, at home and in industry; from electronic dimmers to computer power supplies, use the AC energy available in a mains cycle unevenly. The net result is the effective addition of DC to the mains network.
This effect is inevitable and also inherently unpredictable. In practice the waveform can arrive at the end-user clipped, distorted and asymmetric. Simplistic analyses of unmatched peak voltages are not the whole story: Any AC waveform which does not have equal energy in both positive and negative phases will contain a DC component; regardless of what the peak voltages are or what the wave shape is.
The AC transformers commonly found in audio equipment cannot, by nature, tolerate significant DC without being compromised.
As all transformers convert power through the medium of magnetism, any DC present will inhibit its capacity to transform AC by partially or completely saturating the magnetic circuit. It is this vulnerability to DC that causes acoustic hum and significantly reduces the transformer's power capacity. Even measured at comparatively low levels we have found that this has a significant negative impact on the following power supply and circuit performance, which in turn can degrade sound quality.
The graph below is an illustration of an imperfect mains waveform before processing by the Axis circuit:
The ISOL-8 Axis circuit re-balances the energy axis of the mains waveform without restricting the effective current capacity. This eliminates any DC voltage on the mains power supply, suppressing acoustic hum and liberating system performance.
Waveform after processing by the Axis circuit: