An Independent Review of the Super Ground Cube

Independent reviews carry their own kind of weight, tested on someone else's terms, published without our involvement. Journalist Dawid Grzyb did exactly that with the Super Ground Cube for HiFi Knights, in two different systems, and published his findings.

Briefly, on the technology: the Super Ground Cube is a passive grounding device. It runs without a mains connection and establishes a stable reference potential that drains high-frequency interference before it reaches the audio signal, instead of routing it through the mains earth. A three-position switch allows fine-tuning between warmth, openness, and substance.

Grzyb tested the device across two systems, multiple genres, and all three switch settings, comparing it connected and disconnected each time. His full impressions, and who he thinks the Super Ground Cube is suited for, are worth reading in his own words.

Read the full review at HiFi Knights:

https://hifiknights.com/reviews/accessories/stein-music-super-ground-cube/