Little triangular pieces of self adhesive foil.
You were supposed to put them on your pickup arm, cartridge, amp and speakers. The 'inventor' claimed all sorts of wondrous bollocks would happen to the sound, he wanted a small fortune to come to your house to apply these magic bits of foil.
One magazine gave away a set on its front cover and asked readers to write in describing their hi-fi and what difference they noted in the sound.
Oddly enough, those who had spent many thousands on each component proclaimed greater clarity in the sound. The more their hi-fi cost, the greater the improvement.
Everyone else claimed it was utter bollocks and wondered how to get the adhesive off.

www.johnmorrish.com/wordpress/?page_id=8
( moonbadger Doesn't judge a fish by its ability to climb trees, Wed 5 Oct 2011, 21:56, 1 reply)

More lunacy of that sort can be found here:
www.belt.demon.co.uk/index.html

No need to waste any money, though - they have some free tips! www.belt.demon.co.uk/Free_Techniques/Free_Techniques.html
( benryves Now I'm radioactive! That can't be good!, Thu 6 Oct 2011, 1:18, closed)

Good grief.
I took part in the trial, and heard no difference. I still have the triangles on my tonearm, cartridge and turntable body because I can't be arsed removing them.
I read a lot of that site, and chuckled out loud a few times. The piece about the gravitational effects of balloons was a cracker.
Still, I -must- spend £180 on a croc clip with a bit of wire soldered to it, a brass hex nut soldered to the other end of that so that I can clip it to my speaker cables ( Maplins bell wire ).
The £17 for a piece of self adhesive 'space blanket' seems an utter bargain in comparison.
( moonbadger Doesn't judge a fish by its ability to climb trees, Thu 6 Oct 2011, 8:32, closed)