Audio Transformer E-9912 600:10K (Unit) - reviews - There is 1 review.

great for balancing
bought one for test, ordered 16 for the 16ch audio interface.
I use a modular system which puts out 21 Vpp maximum; so the audio interface has to be leveled down, too.
my mixer has RECORD OUT mono jacks, 10K there - and balanced 600 ohms to the audio interface; level down is 4 or -12 dB.
Frequency respone is great, goes down to 10 Hz and above 40 kHz;
distorsion I can't measure, not noticed.