Dcaudio,
A new power cord is nice, but if you want to take the unit much further, the next step after the SC4 would be to replace the stock 4-pin rectifier bridges on the Power Board with discrete Schottky diodes. If you don't have the capability yourself, then Reference Audio Mods does it. With this mod there is improvement in all areas, but particularly in bass control & dynamics.
A new power cord is nice, but if you want to take the unit much further, the next step after the SC4 would be to replace the stock 4-pin rectifier bridges on the Power Board with discrete Schottky diodes. If you don't have the capability yourself, then Reference Audio Mods does it. With this mod there is improvement in all areas, but particularly in bass control & dynamics.