Sony sacd "custom setting"

I OWN A SCD-777ES AND I AGREE WITH "JTINN" THAT IT DOES MAKE A TREMENDOUS DIFFERENCE...IT IS INCREDIBLE. I HAVE IT HOOKED UP TO A THRESHOLD T3 PREAMP AND A PAIR OF THRESHOLD T200 AMPS IN MONOBLOCK FORM. I HAD THE SAME CONCERNS WITH MY EQUIPMENT AND HESITATED AT FIRST BECUASE, AS YOU PROBABLY KNOW, THRESHOLD FOLDED A COUPLE YEARS AGO. LUCKILY, BOTH THE PRE-AMP AND THE AMPS ARE CAPABLE OF DC-100KHZ ACCORDING TO THE MANUALS (WIDER RANGE THAN THE SCD-777ES). SO MY ADVICE IS READ THE SPECIFICATIONS IN YOUR MANUALS FOR BOTH PRE-AMP & AMP(S); ITS PRINTED FOR A REASON. IT IS DEFINITELY WORTH IT.

Been using it in custom mode for over a year with tube gear. Not one problem, but I do suggest you check with the manufacturer of your amp and preamp. Regards, Mike

Put it on Custom - huge dofference. I have put it on custom with amps from Adcom to Levinson.

I called Dunlavy Audio and spent almost an hour chatting with John Dunlavy. Talk about customer service! I knew my amp and pre-amp would have no problem with the signal in that they are built to recieve and send that. The speakers were the unknown. I have the SCD-1 and it turns out that Dunlavy is using the same unit in there demo room. John's comment was "let's try it, the worst that could happen is we replace a couple tweeters". I guess the electronics of the cross over is safe, so if your willing to risk your tweeters go for it, assuming your other equipment can handle it. I switched it over seven months ago and it made a difference, not as big as others have reported with the SCD-777ES.

I am a technical dunce. What specifically should I be looking for regarding my amplifiers, preamp, and speakers in order to safely use the custom setting on my 777es?