A small Panasonic digital receiver that I messed around with (similar to the SA-XR25) has a small coil if several turns wound into the line cord, and secured with a plastic wrap. The manual warned the user not to unwind it.
I think this is to meet international specs regarding how much noise a device can feed back into the power line. The device in the cord is called a RETLIF (filter backwards).
I doubt it has an effect on the equipment itself, but may prevent your microwave oven from burning dinner.
It does seem that many audiophiles do believe that line cord inductance affects the sound, so this tweek is a great idea to save lots of money. Why don't we investigate the best kind of knot to tie? Does a square knot sound different from a clove hitch? Get out your Boy Scout manual and have some fun :)
I think this is to meet international specs regarding how much noise a device can feed back into the power line. The device in the cord is called a RETLIF (filter backwards).
I doubt it has an effect on the equipment itself, but may prevent your microwave oven from burning dinner.
It does seem that many audiophiles do believe that line cord inductance affects the sound, so this tweek is a great idea to save lots of money. Why don't we investigate the best kind of knot to tie? Does a square knot sound different from a clove hitch? Get out your Boy Scout manual and have some fun :)