[quote author="sodderboy"][quote author="Samuel Groner"]
Just run it unbalanced. Common to input sleeve, lift the shield. No technical need to add active electronics.
What works very well for unbalanced outputs connected to balanced inputs doesn't work well the other way round. Depending on output stage topology you might end up with gross distortion--at best you'll have at least one (if not two) orders of magnitude less CMRR than with a proper balanced input.
[/quote]
I have not experienced this. Disagreeable output topologies are few in most recording studios.
I have installed scores of Hafler, Crown, etc. type unbalanced input circuit amplifiers in rooms with all types of balanced monitor sources. There have been few interface issues, and, nuff' respect, but no one has ever asked me to improve the CMRR by any fraction of a magnitude.
The few outliers would be machine room runs over 75 feet, GML or other custom consoles, and just plain garbage equipment. Most outlier solutions used a high quality isolation tranny.
Mike[/quote]
When you connect the output like this, aren't you shorting one of the balanced line drivers from the signal source?
Just connect the tip and common from the output to the unbalanced input. You will still lose 6dB of signal and CMRR, but at least you aren't shorting the output of your line driver.