Nordost QBase QB8 Mark III AC Distribution Unit

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$3,369.00

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Nordost-QBase-QB8-Mark-3-AC-Distribution-Unit
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Nordost QBase QB8 Mark III AC Distribution Unit

The Nordost QBASE QB8 Mark III is an eight-outlet AC distribution block designed with demanding audio systems in mind. Using Nordost’s star-earth topology, it passively manages signal and ground paths so each component receives a clean, direct AC path from the wall to its socket. It enhances overall system stability, clarity, and musical dynamics without any filtering or active circuitry. 

Star-Earth Topology That Lifts Ground Impedance for Cleaner Performance

Using a single Primary Earth outlet and raising ground impedance for all other outlets, the QB8 Mark III isolates components from each other’s ground flows. This ensures that ground currents don’t interfere with signal paths, dramatically reducing noise and improving transparency. 

Mechanically Tuned Construction with Premium Materials

The QB8 Mark III is housed in an extruded aluminum chassis tuned to minimize internal resonance. Its connectors are built for reliability and long-term contact integrity. Internally, it is wired using Nordost’s Mono-Filament cable, with thick trace geometry and dual PCBs separating signal/neutral and ground to reduce crosstalk and interference. 

Resistance Sink Dampens Eddy Currents and Helps System Clean-Up

A revised resistance sink feature is incorporated to absorb and dissipate eddy currents that can otherwise cause unwanted distortions or noise in AC distribution. This leads to a reduced noise floor, smoother decay in musical notes, and a cleaner backdrop for even subtle details. 

Key Features
  • Eight high-quality outlets using star-earth topology with one Primary Earth
  • Extruded aluminum, mechanically tuned chassis for vibration control
  • Internally wired with Nordost Mono-Filament cable and dual PCBs to separate ground from live/neutral traces
  • Revised resistance sink to damp eddy currents and reduce electrical noise
  • Available in 15-amp and 20-amp input versions; supports multiple plug types (US, EU, AUS)
  • Durable connectors designed for long life and consistent contact quality