An immediated and striking improvement in the soundstage and the music was more detailed.
If you have a headphone system with Sennheiser 800, Enigmacoustic Dharma, or Audeze headphones, the Synergistic Research headphone cable really interacts fantastically with this BLACK fuse.
So far I have tried the BLACK fuse in the following:
Antelope DAC with its Voltikus power supply
Art Audio PX-25 Tube amp
Emotion Type 45 tube amp
Marantz SA11-S2 SACD player
All have had a major improvement in sound.
David Pritchard