Found this great product to help get that last bit of detail from your hifi, only problem is that they dont make them in UK size; yet

http://www.machinadynamica.com/machina44.htm

We could adapt them to Euro frequencies by earliest April, if you thought there would be demand? -- Alistair

I have read this astounding web site and remain astounded.  Placing $150 crystals near RCA plugs to 'tighten dynamics' makes me feel  on the dubious side of very skeptical! 

 I'll let your better half know that you want them for Christmas then