I have tried the HI FI tuning fuses in my Audio Aero Capitole MKIISE and my Audio Aero Trans Trac tube amp.
While they do make the sound more clear and cleaner sounding in my system it was too much and reduced the warmth and beauty of the music into....well something my ears didn't like.Some systems need some opening up. Mine is very musical and tweaked to the limit so it doesn't take much to screw things up, but then cables ,power cords ,etc.can also kill a good thing even very expensive cables.
That being said YMMV.
For $25 they are still worth a try.
While they do make the sound more clear and cleaner sounding in my system it was too much and reduced the warmth and beauty of the music into....well something my ears didn't like.Some systems need some opening up. Mine is very musical and tweaked to the limit so it doesn't take much to screw things up, but then cables ,power cords ,etc.can also kill a good thing even very expensive cables.
That being said YMMV.
For $25 they are still worth a try.