Nordost
Nordost QBASE Mark III – AC Distribution Unit
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QBASE Mark III
AC DISTRIBUTION UNIT
![](https://cdn.shopify.com/s/files/1/0529/7117/6085/files/QB4_Mark_III_USN.webp?v=1724685048)
- 4 outlet design
- Focused star ground for superior sonic performance
- No in-line filtering or active circuitry keeps the lowest possible AC supply impedance
- Primary Earth grounding
- Optimized multi-level PC-board configuration to further minimize interference, maximize current flow, and more
- External ground post for connection to separate clean ground
- Dedicated Fuse (Comes with two replacement fuses)
![](https://cdn.shopify.com/s/files/1/0529/7117/6085/files/QB8_Mark_III_USN.webp?v=1724685048)
- 8 outlet design
- Focused star ground for superior sonic performance
- No in-line filtering or active circuitry keeps the lowest possible AC supply impedance
- Primary Earth grounding
- Optimized multi-level PC-board configuration to further minimize interference, maximize current flow, and more
- External ground post for connection to separate clean ground
- Dedicated Fuse (Comes with two replacement fuses)
The QBASE Mark III is an elegant yet simple concept that provides the solid foundation that audio components require in order to create and expand upon any high-performing two-channel system. Nordost’s AC Distribution Unit addresses the noise-inducing, conflicting flows of signal and ground paths within a hifi system by using a unique method called "star-earth topology".
Star-earth topology connects all outlets from one central point (or outlet) to the input. In the QBASE, we do this while additionally lifting the impedance level on every outlet, except for the one deemed "Primary Earth". Elevating the ground in this passive manner achieves three indispensable effects: it creates an uninterrupted, straight-line AC distribution path from the wall to each individual component, isolates each component by deterring the ground flow between them, and eliminates conflicting flow between signal and ground paths, all without any form of in-line filtering or active circuitry.
QBASE Mark III units are comprised of a mechanically tuned, extruded aluminum body, outfitted with highly durable connectors which have been specifically engineered to maintain excellent connectivity after extended use. The Mark III model features a dual-level PC-board configuration which separates all ground connections from the line and neutral traces, consequently minimizing any interference or crosstalk between live/neutral and ground currents. Additionally, the construction and trace geometry of each PC-board has been vastly optimized to include enhanced trace sizes, further maximizing current flow and crosstalk, and each QBASE Mark III is internally wired with Nordost Mono-Filament wire. Lastly, a resistance “sink” adds protection and more effectively damps eddy currents.
The QBASE Mark III impacts every component connected to it, improving each one in unique ways. The effect it has on a system is all encompassing— enhancing the 3D imaging on the soundstage, pulling out tonal richness and sustained decay time in the music, and imparting a clear increase of power while maintaining a neutral and effortless delivery of the performance.
REVIEW & AWARDS
NORDOST QBASE QB6 MARK III – MAINS DISTRIBUTION BLOCK - Read More
![](https://cdn.shopify.com/s/files/1/0529/7117/6085/files/hifi_afa692e3-d9ad-49e8-9f49-c5f2f4045f89.webp?v=1715365882)
“The Nordost QBASE QB6 Mark III builds on the considerable strengths of the units that went before it, bringing significant benefits to timing and the resolution of fine but musically important detail.” – Steve Dickinson
NORDOST QBASE8 MARK III AC DISTRIBUTION UNIT - Read More
![](https://cdn.shopify.com/s/files/1/0529/7117/6085/files/the-absolute-sound-vector-logo_tas-logo-orange_4f256924-6a0c-4785-b5b3-b6a9bdb94e39.webp?v=1716653670)
"[The QBASE Mark III] is restorative, bringing to light low-level details and mirco-dynamic shifts that have been obscured. The sonic results make themselves known immediately and consistently." – Neil Gader
STAR QUALITY – THE NORDOST QB8 MK. III DISTRIBUTION BLOCK - Read More
"The latest QB8 should open the window on your recordings wider than ever before, not least because its benefits spread across every component in your system, allowing every single one to work better." – Roy Gregory, GY8
NORDOST QBASE POWER DISTRIBUTOR - Read More
![](https://cdn.shopify.com/s/files/1/0529/7117/6085/files/logo-small_2990c2cb-dbcd-4962-b874-d801ee23ccb5.webp?v=1715619116)
"So, here we have that happy occasion when the product under review performed beyond expectations and is a genuine bargain to boot…The QBASE is as neutral as the day is long, in the optimal sense of the word. Delightfully free of any sonic signature and so even-handed, you'll be hard pressed to . . .” – Marshall Nack
NORDOST QRT SYSTEM REVIEW - Read More
"Reviews sometimes assume a life of their own. This review or at least the idea for this review began when a friend (Sherri) brought a number of Nordost QKOIL models (QV2/QK1) to my home one afternoon so that I could hear them in my system. I had previously visited her home for a demonstration of the QK1 and QV2 and really liked what they did in her system, but was not sure how they might affect my own system. The effects of each. . ." – Fred Crowder, Dagogo
QRT QBASE QB8 AND NORDOST SORT KONES - Read More
![](https://cdn.shopify.com/s/files/1/0529/7117/6085/files/hifi_afa692e3-d9ad-49e8-9f49-c5f2f4045f89.webp?v=1715365882)
"For years it was cables, but these days there is little that rattles the cage of the committed audio puritan like mains conditioners and equipment support cones. Reviews of either is almost bound to elicit a rise in blood pressure and a trip to the keyboard to fire off an indignant mail to some audio forum or other. As for tiny, resonating metal bowls that sit on the wall? Don’t even . . ." – Chris Thomas
AVAILABLE CONNECTORS
INPUT |
OUTPUT |
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SPECIFICATIONS
Dimensions (WxDxH) | QB4 (US, EU and AUS) – 234 x 67 x 120mm QB6 (UK ) – 460 x 67 x 120mm QB8 (US, EU and AUS) – 460 x 67 x 120mm |
Input | C-14 IEC (15/10amp) C-20 IEC (20/16amp) |
Output | US, EU (Schuko), Australian or 13A UK |
Fuse | Yes (comes with two replacement fuses) |
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