I have the Vacuum State mod on my SCD-1 which is an Allan Wright mod. This mod is different than most in that it has a it's own connections for the mod. You can either run the stock connections for the stock sound or the mod connections for the modded sound. In this way I can hear the differences by A B comparison.
There really is no comparison. The VSEI mod just kills the stock sound. I do most of my listening to redbook also. The sound is much more extended top to bottom. The top end of the stock player is somewhat harsh sounding once you have heard the VSEI mod. This mod is very well regarded on Audio Asylum, as you can check for yourself. You can contact me if you want the names of the people that Allan Wright has to do the mods in the states.
There really is no comparison. The VSEI mod just kills the stock sound. I do most of my listening to redbook also. The sound is much more extended top to bottom. The top end of the stock player is somewhat harsh sounding once you have heard the VSEI mod. This mod is very well regarded on Audio Asylum, as you can check for yourself. You can contact me if you want the names of the people that Allan Wright has to do the mods in the states.