It takes less than 5 minutes to install the GRID PROTECTOR. The change in clarity is so amazing that the simplest and faintest nuances that could be heard before are now much clearer. The harshness has disappeared. The ease of listening has eliminated any fatigue effects for me. In fact, listening to the music has made me completely relaxed. There is no immersive effect or change in the sound image. Rather, there is a distinct feeling of being closer to the music. Today I've also listened to some records and tapes with the GRID PROTECTOR on and I really hate to say that everything sounds much more natural now, but what the GRID PROTECTOR does is breathe air into the soundstage and separate the instruments and vocals. As soon as I turn it off, the sound as I had come to know it and consider it to be superior is suddenly just ok, leaving me with the definite conclusion that this GRID PROTECTOR is a must for my ears and my system.