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In many cases so-called Pro equipment is actually single ended and
presents a bridging load, the only difference is the connector and the
ability to tolerate (but not necessarily need) the higher level. So in
reality you may be okay just going hot to hot. Most pro stuff has an
output level control and again much of it is actually single ended. You
may not need to pad it.

But for 100% industry compatibility transformers or an electronic
balun arrangement may be de rigeur. Transformers, good transformers, if
you can afford them are the best choice if you may be driving stuff
with true 600 ohm, true balanced inputs.