We just used the ETC Conversion unit for a concert. The 750 equiv. was a bit warm and did not have the punch the quartz sister has. Fans very quiet. They were also right out of the box so it was a test.
I would have had to have the light tech gel them if it was a broadcast event.
https://www.manualslib.com/manual/169561/Telex-Audiocom-Bp-2000.html?page=11#manual
Manual BP-2000
I had many of these in my broadcast ops till went all RTS. Telex is Balanced audio, Clear Com is Un-Balanced audio. You may find the Telex line converter on E-Bay, that was for converting...