The Excelsior DC Blocker

New product


  • Blocks harmful DC on the mains
  • 4mm sq shielded cable
  • Gold plated terminations

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Sophisticated technology has been used to produce a mains power lead like no other, manufactured to our own specification, the power lead blocks the DC that occurs in the mains supply, to hear it is to want it. Please note we now use an OFC 4mm sq power cable with acoustic braiding on the excelsior.

Manufactured using the best available materials our Excelsior Mains Lead utilises substantial OFC mains cable with 4mm sq individual conductors which are terminated with a gold plated audiophile mains plug and gold plated IEC connector either the standard C15 IEC or C19 high current, used solely on their own this would be a formidable mains power lead.

We have taken the design further and housed a powerful mains filter in the centre of the cable, the aluminium enclosure houses a specially designed DC blocker, DC (direct current) occurs in the mains supply from house-hold appliances and has been present in the supply but not correctly addressed or acknowledged until recently. 

Transformer hum is as a result of dc in the mains, our power cord will remove it and also improve the overall sound quality from your system as a result, the Excelsior needs to be heard to be believed.

The power lead has been tested to prove it's effectiveness on a live mains supply and also in a computer simulation programme specifically for this task.

Standard length is 3 metres overall, longer lengths can be made to order.

Full test report available on request.

Please read the technical white paper on this.

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By (Banbury, United Kingdom) on 11 Nov. 2016 (The Excelsior DC Blocker ) :

Blessed silence, blessed music!

This product succeeded in reducing to almost zero the DC generated hum from the amplifier in a way that nothing else has! In addition it has revealed a deep bass and a really detailed soundstage that previously was only hinted at before. I would write more but I'm too busy listening to old favourites with a new appreciation! I'll end by saying that I am very pleased as the results have justified the cost. An excellent product.

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