Hi5harry,
If you want to hear an even bigger difference with your system, try the Wolff source cord. The gain was undoubtedly noticeable (just as Michael suggested), but the source cord was monumental. After four days, it opened up and the sound became cavernous. Several weeks later, it's better still.
Howard
P.S.--I have not tried Z cable. And the only VH Audio product I had was their Hot Box. It did not work well in my system, at least to my (and my wife's) ears.
If you want to hear an even bigger difference with your system, try the Wolff source cord. The gain was undoubtedly noticeable (just as Michael suggested), but the source cord was monumental. After four days, it opened up and the sound became cavernous. Several weeks later, it's better still.
Howard
P.S.--I have not tried Z cable. And the only VH Audio product I had was their Hot Box. It did not work well in my system, at least to my (and my wife's) ears.