Thanks for all of your advice, Doug.
I think you're right about the tube. The sound became subtly more refined and relaxed with the tube in vs without so I am leaving it in for now. I just got the Stancor ps tonite and that makes a much more noticeable improvement.
I have ferrite RFI blockers on my Ic's but will get some more for the rest of the system.
I tried going w/o the line attenuators and it did not work out. Some aspects of the sound improved, like the size of the soundstage, but the sound got a bit ragged as I could hear my input stage starting to overload on dynanmic passages-not pleasant to hear. The Stancor power supply plus burn in time has improved the soundstaging.
I have tried the Radio Shack digital cable years ago and found it was very simiar to Canare Digiflex cable; not bad, certainly worth $10.
The Apogee is only a little better. I have owned both the old and newer version of the Apogee Wyde-eye. I am currently using Harmonic Tech Copper link, which I prefer to the Apogee. I have tried Monster data link and Ensemble Digiflux with the Art DI/O and I also have a Madrigal MDC on hand (which costs more than the DIO), but until the unit burns in, I think I will go with the Harmonic Tech for now. The Stancor ps has warmed everything up a bit, so I will try all of the above mentioned cables again in a few days and will see what I can do to get rid of the RFI.
I think you're right about the tube. The sound became subtly more refined and relaxed with the tube in vs without so I am leaving it in for now. I just got the Stancor ps tonite and that makes a much more noticeable improvement.
I have ferrite RFI blockers on my Ic's but will get some more for the rest of the system.
I tried going w/o the line attenuators and it did not work out. Some aspects of the sound improved, like the size of the soundstage, but the sound got a bit ragged as I could hear my input stage starting to overload on dynanmic passages-not pleasant to hear. The Stancor power supply plus burn in time has improved the soundstaging.
I have tried the Radio Shack digital cable years ago and found it was very simiar to Canare Digiflex cable; not bad, certainly worth $10.
The Apogee is only a little better. I have owned both the old and newer version of the Apogee Wyde-eye. I am currently using Harmonic Tech Copper link, which I prefer to the Apogee. I have tried Monster data link and Ensemble Digiflux with the Art DI/O and I also have a Madrigal MDC on hand (which costs more than the DIO), but until the unit burns in, I think I will go with the Harmonic Tech for now. The Stancor ps has warmed everything up a bit, so I will try all of the above mentioned cables again in a few days and will see what I can do to get rid of the RFI.