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Black Ravioli Grounding Box with USB A plug, purchased from new and in unmarked condition. Designed to plug into any unused socket in order to dissipate unwanted electrical noise and improve sound quality/low-level resolution.
This is a buyer’s market for this category right now, and £185 looks like a strong buy rather than a stretch. New examples of Black Ravioli’s grounding box have been advertised around £250 on clearance and £499 at full price, so a clean used unit at £185 sits comfortably below the usual second-hand anchor and feels well judged.
The appeal here is straightforward: these are niche tweak products that tend to sell to committed system-tuners, and the USB-A version is useful if you’re grounding a streamer, DAC, or computer source. “Excellent” condition matters because there’s little to wear out, so a tidy, complete listing with the right connector is the main upside; if it’s boxed and from an original owner, that only strengthens it.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Black Ravioli is a European audio accessories manufacturer specializing in vibration isolation and noise dissipation products for high-fidelity systems. The brand has established itself as a niche player in the premium audio market, focusing on mechanical and electrical noise reduction through innovative support systems and grounding solutions. Their product philosophy centers on the principle that mechanical vibration and electromagnetic interference significantly degrade audio reproduction, a concept they address through carefully engineered isolation platforms and signal modules.
The company's core product range includes isolation supports, signal modules designed to dissipate RFI and EMI noise in real-time, and grounding accessories. Their flagship offering, the Black Hole Signal Module, retails at approximately £500 and exemplifies their approach to passive noise management—drawing parallels to established techniques like sand-filled speaker stands. Black Ravioli products are designed as system tweaks rather than primary components, positioning them as refinements for existing audio setups across various equipment categories.
Black Ravioli occupies the high-end boutique segment of the audio market, appealing to discerning audiophiles willing to invest in incremental sonic improvements through specialized accessories. Distribution has historically been limited, particularly outside Europe, though the brand has secured representation in North America. Their reputation rests on a technically coherent philosophy regarding vibration control, though detailed founding information and comprehensive product history remain difficult to verify from mainstream audio press sources.
See all Black Ravioli listings on RADAR.
