T+A Power Bar
T+A mains distribution unit designed to filter and protect a Hi-Fi system, with separate sockets for analogue and digital equipment.
Description
The T+A Power Bar is a mains distribution unit designed to occupy a central place in a Hi-Fi installation. It serves both as a filter and as a protective device for all equipment connected to it, with the aim of preventing the various components of the system from interfering with one another via the mains supply.
Its operation is based on a physical separation of power sources according to the nature of the connected equipment. The unit offers six sockets divided into three distinct groups: two red sockets for analogue equipment, two white sockets for digitally controlled devices, and two blue sockets for fully digital devices.
Each group of sockets is decoupled from the others by independent sheath current filters. This separation limits the spread of electrical interference generated by digital circuits towards analogue circuits, which are more sensitive to this type of interference.
This type of mains unit is aimed at Hi-Fi enthusiasts with a system made up of several different sources, combining for example a turntable, network player, DAC or digital amplifier, and wishing to limit unwanted interactions between these devices via the electrical network.
What to check before buying used
With this type of mains unit, what matters most is the condition of the socket contacts and the power cable: oxidised pins or a loose plug can reintroduce the very interference the unit is meant to filter out. It is also worth checking that the three socket groups (red, white, blue) still distribute current correctly, as a filtering fault on one group may go unnoticed without measurement. Inspecting the casing and the colour markings, which are often prone to wear, also helps confirm that the socket assignment remains legible.
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