MCI recording console 600 channel strip
This is out of an MCI JH600 recording console.
Two Vintage MCI 2005626 JH-110 Output Audio Transformers 1:1.25 Step Up 7C111A
The output schematic is shown in the photos above.
Two Vintage MCI 7C110 JH-110 Input Audio Transformers 10K:2K Step Down
The input schematic is shown in the photos above.