Eidolic 4-pin XLR


Eidolic 4-pin XLR with Tellurium Copper pins

The 4-pin XLR has emerged as the standard for ergonomic, clean, and simple connectivity on balanced headphone amplifiers.  Until now, this connector has been a compromise for those seeking the best system to connect flagship headphones, their cables, and their gear.  Through significant investment in production techniques we are able to offer a 4-pin XLR with the best possible contact material and plating, for an appreciable boost in fidelity. 

The Eidolic difference.  Today’s studio-grade 4 pin XLR is made with brass alloy contact pins, for a conductivity rating of approximately 20-25% that of pure copper, and there has been no alternative, let alone an improvement to these limited offerings.  However, pure copper simply cannot be machined into 4-pin XLR pins at a production scale - it is too soft.  The solution: tellurium copper.  With a minor addition of roughly 0.5% tellurium to 99.5% copper, the resultant alloy’s conductivity only falls from 100 to 93% of the conductivity of pure copper, while being greatly more durable and machinable.  For male connector pins, tellurium copper is truly the gold standard - unlike pure copper and pure silver, it is practical for precision machining applications, and it transmits audio signals much more freely than the most ideal brasses and bronzes, which rarely exceed even 30% of the conductivity of copper.  The Eidolic 4-pin XLR is the world’s first production 4-pin XLR with gold-plated tellurium copper pins.  The female 4-pin XLR sockets on your amplifiers are already industry-standard phosphor bronze -  there exists no feasible upgrade to this metal at any price as female contacts must be made of springy alloys.  With the Eidolic 4 pin XLR in the signal chain, we have done our due diligence to ensure that this is the final piece of the puzzle.  

Why gold?  Gold is the most conductive plating metal that is also oxidation-resistant, offering some advantages over silver and rhodium.  Especially for plugs that are not being connected 10-20 times per day the way a 3.5mm mini plug might be, gold is the smartest choice - it is typically direct plated onto the copper for an uncolored sonic presentation, it is considerably more economical than rhodium, and wears nearly as well as rhodium (specifically, for less abrasive sockets such as XLR sockets, gold has excellent wear characteristics).  It is the perfect complement to the most conductive base metal - the tellurium copper that lies beneath the gold. 

The body, and other notable components.  The Eidolic 4-pin XLR features a clean, sleek exterior of media-blasted nickel plated over a tough die-cast zinc shell and a matching solid metal rear cap in place of the typical plastic-and-rubber boot cap.  Distinctive grooves on the barrel set this connector apart and provide a secure grip when handled.  A high-powered laser burns the Eidolic logo into the metal.  Inside, the Eidolic 4-pin XLR features a user-friendly assembly with the industry-standard collet piece which grips the cable tightly when the back cap is screwed on.  The Delrin engineering polymer used for the contact piece’s insulation is highly heat-resistant, making it perfect for soldering.  The imposing weight of Eidolic’s 4-pin XLR is commensurate with its quality and the audible improvement that accompanies any cable project featuring this connector.

To find out more about Eidolic 4-pin XLR connectors visit their page here: http://www.eidolic.com/Eidolic-Hifi-Audio-Headphone-Connectors-Tellurium-Copper-4-pin-XLR-new.html