For audiophiles, the pursuit of pristine sound begins at the source—the power supply. KBL Sound’s Extrema Power Terminal (RPT-797) is a masterclass in power distribution, meticulously crafted to elevate high-end audio systems to new heights. Designed with no compromises, this power terminal combines premium components, advanced materials, and puristic engineering to deliver a transformative listening experience, making it a standout choice for discerning audio enthusiasts.
Uncompromising Design and Construction
The Extrema Power Terminal is a testament to KBL Sound’s dedication to quality. Its chassis is CNC-machined from a solid block of aerospace-grade aluminum, resulting in walls up to 30mm thick. This fortress-like construction provides exceptional shielding against electromagnetic interference (EMI) and radio frequency interference (RFI), while absorbing internal and external resonances. The result is a stable, noise-free environment that ensures undisturbed electron transfer to your audio components.
At its core, the Extrema features an IEC Furutech FI-09NCFR inlet and either six Furutech FI-30NCFR Schuko outlets (European version) or three GTX-D NCF(R) sockets (US/Asia version). All conductive elements are made of pure copper treated with Furutech’s Alpha Process—deep cryogenic freezing and ring demagnetization—to enhance conductivity and eliminate residual stress. These components are further enhanced with Furutech’s Nano Crystal² Formula (NCF), a crystalline material that generates negative ions to eliminate static and converts thermal energy into infrared for superior electrical and mechanical damping.
Star-Wired Configuration for Pure Power
Unlike conventional power strips where sockets are wired in series, the Extrema employs a star-wired configuration. Ultra-pure OCC (Ohno Continuous Cast) monocrystalline copper wires, insulated with Teflon, run in parallel from the IEC inlet to each socket. This design ensures that every connected device receives direct, uncompromised power, eliminating voltage loss and maintaining consistent current flow. The 11 AWG wiring further minimizes resistance, delivering clean, dynamic power to your system.
Notably, the Extrema avoids filters or chokes, which can impede current flow. Instead, its robust shielding and strategic cable routing eliminate EMI and RFI, providing a purer power delivery than many high-end conditioners. This puristic approach results in a fluid, lively soundstage that feels more natural and refined, with enhanced definition across all frequencies.
Elevating the Listening Experience
The Extrema Power Terminal transforms the audio experience, delivering music that flows effortlessly rather than sounding like a collection of disjointed notes. Users report a sound that is more vivid, present, and detailed, with a refined tonal balance that brings recordings to life. Instruments are better isolated, and the sense of space and atmosphere in recordings is heightened, creating a more immersive and natural presentation. Skeptics may doubt the impact of a power terminal, but the Extrema’s effect is profound and undeniable once experienced.
For optimal performance, KBL Sound recommends pairing the Extrema with their high-end power cables, such as the Red Corona SRX, Himalaya SX, Himalaya PRO2, or Extrema. However, its compatibility with other premium power cables ensures versatility for any audiophile setup.
RPT-797 Wood Base: The Perfect Companion
The Extrema Power Terminal is complemented by the optional RPT-797 Wood Base, crafted from a single piece of high-density wood with exceptional vibration-damping properties. Impregnated with a special antistatic oil, the base isolates the terminal from ground resonances and static charges, further enhancing sound quality. The result is a calmer, smoother sound with greater clarity, improved instrument separation, and a more natural acoustic ambiance.
Technical Specifications
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AC Input: Furutech FI-09NCFR IEC inlet, pure copper with rhodium plating, NCF technology, Alpha-processed (cryogenization and demagnetization)
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AC Outputs (Schuko): 6 Furutech FI-30NCFR 16A/250V sockets, pure copper with rhodium plating, NCF technology, Alpha-processed
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AC Outputs (US/Asia): 3 Furutech GTX-D NCF(R) 20A/125V sockets, pure copper with rhodium plating, NCF technology, Alpha-processed
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Chassis: CNC-machined aerospace-grade aluminum alloy, up to 30mm thick, with hairline anodized surface
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Internal Wiring: 11 AWG OCC monocrystalline copper, Teflon-insulated, star-wired configuration
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Grounding: Chassis grounding post (1 standard, 2-6 on request)
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Legs: Custom phosphor bronze, nickel-plated for vibration isolation
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Rating: 10A/250V
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Dimensions: 24.8 x 14.7 x 10 cm
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Weight: 5 kg
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Wood Base Dimensions: 30 x 20 x 4.8 cm
Why the Extrema Power Terminal Stands Out
The KBL Sound Extrema Power Terminal is not just a power distributor—it’s a cornerstone for high-end audio systems. Its meticulous engineering, premium materials, and innovative design deliver a level of power purity that enhances every aspect of sound reproduction. By prioritizing clean, unfiltered power delivery, the Extrema outperforms many traditional conditioners, offering audiophiles a transformative upgrade that brings their music closer to perfection.
