RECENTLY HOOOKED UP SOME NEW PHASE TECH V-12S TO AN OLDER SONY ES AMP AND WAS LOVING IT TILL A MONTH OR SO LATER----NOW I HAVE CRACKLING NOISES IN THE CENTER CHANNEL AND REARS----IF I SWITCH SPEAKERS IT GOES TO WHATEVER SPEAKER IS PLUGGED INTO THE CENTER CHANNEL. THINKING I COULD TALK THE WIFE INTO SOME NEW EQUIPMENT I BOUGHT A 5CHANNEL ADCOM AMP AND FIND THE SAME PROBLEM. NOW I FIND OUT THAT SONY PULLS THEIR PRE-OUTS AFTER THE INTERNAL AMP SO ICANT GO AROUND THE INTERNAL LIKE I THOUGHT I COULD. ANY SUGGESTIONS ON A NEW RECIEVER??? WOULD LOVE TO BUY A PREAMP/TUNER BUT DONT HAVE THE CASH NOW----CAN I GET AWAY WITH ANOTHER SONY ES RECIEVER OR IS IT BETTER TO WAIT TO GO TO A PREAMP---ANY DIFFERENCE IN QUALITY????