Appreciate your responses Mad/Maniac (I see I'm not the only one this hobby has this affect on)
Yes I run balanced on my main rig at home and when I saw the SR-71B with balanced input I was intrigued and had this wild idea there was an iPod LOD with balanced signal out but I should have known the late great purveyor of i-proprietary/i-scheduled obsolete-tion would not have designed a pin out that would let a balanced signal come out of an i-Anything
Now coming from the masters of media machines and the mighty iTunes Lossless format one would think a balanced signal out might have made it to the table
Pretty much anything I dream up in my head is always a pipe dream if Apple is involved
I spoke with Ray again and he actually designed the SR-71B to be fed a balanced signal in from a CDP or DAC from a PC or laptop scenario. Now he did say he designed the single ended input to convert the output signal to balanced which is pretty sweet however nothing for the i-products due to restrictions and legalities from Apple! Go figure
Guess I'll just stick to my Tomahawk and Shadow for portable listening off the old i-Units and be happy.