hammill said:
I come on here for good advice. I used to buy hifi magazines and believed the rubbish they wrote until I wasted £50 on an HDMI cable that was no better than the free ones I already had.I then start reading about the subject and found that the evidence backed up my own findings and tellng people an HDMI cable could produce deeper blacks was simply stupid. I am glad that people are told the truth by knowledgeable people ( people who know about science, a subject you seem not to be keen on) and hopefully at least some inexperienced readers won't waste their money on con artists and their shiny rubbish.
So do I. And in the analogue video age upgrading a standard scart lead to a very good one made quite a noticable difference, at least with my first DVD player and Sony 100 Hz CRT, which I bought in 2000. Many of us are conditioned to the idea that cables should make a difference, because it always did with our analogue stuff. It is quite obvious now that under normal circomstances buying more expensive cables for digital transfers (HDMI, USB, optical, coaxial) is ludicrous and that some cable producers are peddling rubbish and should be boycotted off the market.
Then there is the myth about power leads. It is mindboggling that people believe that a metre of cable can make a difference for electricity that has travelled for possibly hundreds of kilometres and has been subjected to all sort of influences and transformers. At best these leads make no difference, at worst they provide a fire hazard because the cables were not tested by the manufacturer of your kit.
I'm not so sure about the non-effectiveness of mains cleaners, but I'm pretty sure that 'dirty mains' is also a bit of myth or at worst has very limited influences on the sound quality.
One thing with the electrics here in NL made a bit of difference. Since we use German Schuko power sockets, it is impossible to determine the polartity of a plug. A couple of years ago I bought a polarity detector in Germany and after unplugging everything and testing every device connected to the amp for the right polarity even my other half asked what had happened to the sound system because it seemed a touch more detailed.