For connecting devices or active speakers with a cold appliance plug of protection class I to the 230V power grid. A weakness of conventional power cabling systems is the use of Schuko plugs and sockets, which are not designed for shielding. Every Schuko socket is effectively a 44 mm diameter hole in the shielding, allowing high-frequency interference to enter. This issue is addressed with the Audio Optimum Direct Distributor, which directly and star-shaped connects up to eight shielded and ferrite-sheathed power cables. The connection is made via 24 Wago terminal blocks on two stacked circuit boards inside an RF-shielded aluminum die-cast housing. Beneath the distributor housing is a second housing of the same size containing the Audio Optimum-developed Power Cleaner. It consists of four copper plates insulated and mounted in defined distances on top of each other, with surfaces coated in black tourmaline. The two outer plates are connected to the protective ground, while the two inner plates are connected to neutral and phase, acting as X- and Y-capacitors with a lossy dielectric. Combined with the ferrite-coated input cable, which acts as a lossy inductor, an efficient second-order network filter is created. The ferrite suppresses high-frequency magnetic interference through remagnetization losses, while the tourmaline suppresses high-frequency electric interference through re-electrification losses. Unlike conventional power filters, HF noise is not reflected but converted into heat, making the Power Cleaner ideal for use before the distributor. The aluminum housings for the Direct Distributor and Power Cleaner, connected to the central grounding point, feature a stable tourmaline-polyurethane baked enamel coating on the surface, giving the overall construction the additional function of an effective ground box. Each outgoing cable has a two-stage special power filter integrated, extending the filtering effect of the ferrite sheathing to lower interference frequencies. The continuous HF attenuation spans from 300 kHz into the GHz range. The output cables are routed upwards, keeping the compact Direct Distributor space-efficient. In its combination of features, the Audio Optimum Direct Distributor is unique and guarantees the best possible sound quality for the connected system at any standard wall socket. The Direct Distributor is preassembled with three to eight output cables in the standard length of 1.6 m; for longer cable lengths, we offer custom quotes.

For connecting devices or active speakers with IEC connectors of protection class I to the 230V power grid. Power cables can have a greater impact on sound quality than, for example, signal cables. The power cables themselves do not have a sound character, but they differ in how they suppress and shield high-frequency interference, which the devices cannot protect themselves from. Conventional power filters, as built into most devices, suppress frequencies up to about 50 MHz. However, it is precisely the higher interference frequencies (mobile networks: 900 MHz to 2.6 GHz) where devices are particularly sensitive, and these can only be effectively suppressed with a ferrite filter section. In addition to a continuous ferrite coating on the phase, neutral, and ground conductors, the SK-GK-NFE-BW features a foil shield and an outer covering made of pure cotton, which, by absorbing natural humidity, dissipates static charges and high-frequency leakage currents from the surface of the cable jacket. The foil shield is galvanically grounded at the Schuko plug and capacitively grounded at the IEC connector, ensuring that the shielding is connected on both sides at high frequencies and on only one side at low frequencies, preventing equalization or leakage currents from flowing through the shielding foil. Only the combination of all these characteristics guarantees interference-free operation of the connected device; other features (oversized copper cross-section, gold-plated plugs, etc.) are comparatively insignificant or even harmful (e.g., plastic mesh covering) to the resulting sound quality. Since the ferrite coatings make the cable conductors thicker and less flexible, a copper cross-section of 3 x 1 mm² was deliberately chosen, which is sufficient for a continuous power output of up to 2.3 kW. A larger copper cross-section is oversized for hi-fi devices and impractical to handle. In combination with our 4-way, 6-way, or 8-way power strip with star-wired internal cabling, the SK-GK-NFE-BW forms perfect power cabling systems for high-end systems and studio equipment that work without limitation at any standard wall socket.

For connecting devices or active speakers with IEC connectors of protection class I to the 230V power grid.The SK-GK-NFE-FI-BW shares all the essential characteristics of the reference power cable SK-GK-NFE-BW and additionally features an integrated special power filter that extends RF suppression to lower interference frequencies. The continuous ferrite coating of the power cable achieves its full damping effect above 100 MHz. For the interference frequency range below, the integrated special power filter takes over, resulting in continuous RF suppression from 300 kHz up to the GHz range. Unlike conventional power filters, the two-stage special power filter is a 4-wire system, where protective earth and shielding are conducted separately. Moreover, it is effective in a frequency range approximately ten times higher (300 kHz to over 200 MHz) than conventional power filters (30 kHz to about 30 MHz), ensuring no oscillation tendency in conjunction with a power filter already built into the connected device. The SK-GK-NFE-FI-BW is also designed for a maximum current of 10 amperes, making it universally applicable for both analog and digital source devices, as well as for power amplifiers or active speakers.In combination with our 4-way, 6-way, or 8-way power strip with star-wired internal cabling, the SK-GK-NFE-FI-BW forms perfect power cabling systems for high-end systems and studio equipment that work without limitation at any standard wall socket.