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I own Bliss Hifi, a high-end audio boutique and authorized Synergistic Research dealer, and this Galileo SX Active Ground Block Mk II is being listed as a consignment sale on behalf of my client for whom I am selling his entire system. He is the sole owner and purchased this unit brand new from Bliss Hifi in Fall 2025. It is in like new cosmetic condition and perfect working order.

It comes with standard ground leads (four 4ft and two 8ft), and and will ship in its original box.

For $3,500, the unit ships with no power cable.
For $4,200, the unit ships with the Foundation XL 10AWG ($1,199 MSRP).
For $5,400 the unit ships with the Atmosphere SX Euphoria ($3,495 MSRP).

These power cables are in excellent preowned condition, in from the same client.

If you’ve never experienced what proper active grounding can do for a system, the Galileo SX Ground Block Mk II will be a revelation. This isn’t a subtle tweak. It’s the kind of component that makes you wonder what you’ve been missing all along. The noise floor drops dramatically, dynamics open up, and the soundstage gains a depth and dimensionality that transforms the entire listening experience. The four selectable ULF frequency settings let you tune the presentation to your system and your preferences, from tightly focused imaging to a wide, enveloping soundstage. As an authorized SR dealer, I can tell you this is one of the most impactful single additions you can make to any serious system.

Check my stellar feedback on popular marketplaces and buy with confidence. This listing includes free insured shipping across the CONUS. As this is a passthrough sale that I am brokering on behalf of my client, I can only accept payments via PayPal F&F, Venmo Gift, or personal check, but this also gives you the opportunity to attain this at my lowest possible price.

Happy to answer any questions. Thanks for your consideration.

More about the unit: The Synergistic Research Galileo SX Active Ground Block Mk II is a top-to-bottom re-engineering of the award-winning Galileo SX Active Ground Block, incorporating cutting-edge technology originally developed for Synergistic Research’s cost-no-object Galileo SX PowerCell. The chassis is machined from a solid billet of aluminum with judiciously applied carbon fiber, minimizing unwanted vibrations and chassis resonance that would otherwise compromise system performance. Inside, three Active Electromagnetic Cells employ Galileo SX PowerCell technology: two rolled EM Cells housed in carbon fiber tubes for resonance control, and one flat carbon fiber Electromagnetic Cell with a copper mesh Ground Plane. These folded EM Cells are 25% denser than prior generations, delivering greater filtration for a lower noise floor and enhanced dynamics. The Mk II iteration features an entirely new PCB, a built-in linear power supply, and 70 mini BFA ground ports for connecting components throughout a system.

The most distinctive feature of the Galileo SX Ground Block Mk II is its variable, dual-channel ULF signal generator, which delivers twice the signal strength of the original model. This generator allows selection between four harmonics of the Earth’s Schumann Resonance to bias the internal Electromagnetic Cells, each indicated by a colored LED illuminating the unit’s internal circuitry: Green provides the default neutral setting ideal for systems without an SR Atmosphere or FEQ, Blue delivers the most focused presentation with strong dynamics and precise imaging, Red maximizes soundstage scale with deep, enveloping dimensionality, and Purple splits the difference between Blue and Red for systems running SR acoustic field generators. By providing a dedicated, low-resistance conductive path for system grounding separate from what components and power cables offer on their own, the Galileo SX Ground Block Mk II addresses the convergence of RF interference, electromagnetic field coupling, and mechanical chassis energy simultaneously. Ground leads connect to spare analog inputs, outputs, or chassis grounds on each component, creating a star-ground topology that dramatically lowers the system noise floor and unlocks dynamics, imaging, and tonal balance that were previously obscured.

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