Am using the MG 3080 for my single-ended runs. This is rated at 14 pF/foot. The hot and ground signals are on the twisted pair, and the drain is for one end, only. The Lavry DAC has jumpers which can ground pin 3 for single-ended signalling. The drain is still on pin 1 of the transfer DAC, but is abandoned on the receiving device. I have nothing on pin 1 of the monitor DAC, because the amp told me that it wants to have the drain on _its_ pin 1, along with the cold... I think this is sometimes referred to as pseudo-balanced. Very quiet system, and with only half the amplifiers in path (as true balanced requires).
Also, while I do believe that the extra piano felt surrounds around my tweeters and along the wood that is exposed when not using the speaker grilles helps reduce the Dunlavy tweeter-zing thing, what I believe has been a sea change in added warmth, bass, and tube-like fullness in my solid state amp (Pass X-350), has been the result of simply not turning off the amp at the end of each day. I used to turn it to standby mode because Mr. Pass told me that it only needed 1 hour warm-up from standby mode in order to sound 95% or so as good as it would ever sound. I heartily disagree. The amp sounds a little better each day! On some transients, it can mean the difference between pain and pleasure! It cuts its life in half to leave on, rather than to put on standby each night, but I bought it refurbished, anyway!