47 feet is a very long to start with and while ill get ignored by most , SE or BAL the first issue is can the line stage drive such a long cable for a variety of reasons. Bal was not made for us it was for studios for again a variety of reasons with one being long runs and isolating the ground from signal. BAL has a few topologies but the good ones keep the signal isolated from the shield and ground . where SE can do this but needs a 3 conductor cable like bal uses.
At one point I had about 40 feet from line to amps
since my line stage and amps were true bal topology the length still mattered and could be heard once made much shorter. And yes I used 3 kinds of bal cables with varying specs. longer runs most times need a low capacitive insulation.
one thing to try is put the amp close to the line stage to test. Then plan a forward path. The possible sound changes are not staging as an example to listen for. Yes it can be stage as well but the over all tone and dynamics
At one point I had about 40 feet from line to amps
since my line stage and amps were true bal topology the length still mattered and could be heard once made much shorter. And yes I used 3 kinds of bal cables with varying specs. longer runs most times need a low capacitive insulation.
one thing to try is put the amp close to the line stage to test. Then plan a forward path. The possible sound changes are not staging as an example to listen for. Yes it can be stage as well but the over all tone and dynamics