SCD-1 GREAT, BUT EMAIL ME FOR FREE UPGRADE REPORT! MY EMAIL ADDRESS IS [email protected]. ON THE SUBJECT OF HISS, YOU PROBABLY HAVE A GROUND LOOP, OFTEN CORRECTABLE BY LIFTING THE GROUND WITH A "CHEATER" PLUG (TWO-PRONG MALE, THREE-PRONG FEMALE). THIS MAY NOT BE ENOUGH, HOWEVER, IF YOU HAVE MULTIPLE GROUND INPUTS. THE SCD-1 IS VERY SENSITIVE AND WILL PICK UP AND AMPLIFY LOOP HUM THAT YOU MAY HAVE MISSED BEFORE. IT IS PROBABLY NOT THE CUSTOM SWITCH, WHICH BYPASSES A HIGH-FREQUENCY DIGITAL FILTER AND HAS NEVER INTRODUCED HUM TO ANY OF THE DOZENS OF AUDIOPHILES WHO HAVE SELECTED IT. IF A CHEATER PLUG DOES NOT ERADICATE THE PROBLEM, GO ON A GROUND HUNT. LIFT EVERY GROUND EXCEPT ONE TO YOUR MAIN AMPLIFIER. DON'T FORGET THAT THE COPPER MESH JUST UNDER THE DIELECTRIC OF YOUR INCOMING RG6 CABLE LINE IS A DIFFERENT GROUND POTENTIAL PROVIDED BY YOUR CABLE COMPANY. IF THIS GROUND IS TROUBLESOME, ORDER A SPECIAL CABLE GROUND LIFTER FROM AUDIO ADVISOR, GRAND RAPIDS, MI. HOPE THIS HELPS. BRUCE KOPITZ, THE AUDIO ADVISOR.
