[Toshu]

I have a B&K AVR507 surround system...and its pre HDMI. Here is a picture..

Lots of connections....but no HDMI.
I recently moved and I am planning on buying a new TV as well as 4K BluRay player.... I assume that someone has to make a high quality interface box that can be used to connect the new components to an old component such as this???

If you have something and are happy with it, please share your suggestions and if possible, pictures...

 

[PurpleAngel]

I think it would just be easier to run S/PDIF (optical/coaxial) from the TV, Blu-player, cable box and computer, to the S/PDIF inputs on the AVR507.

 

[Toshu]

I think it would just be easier to run S/PDIF (optical/coaxial) from the TV, Blu-player, cable box and computer, to the S/PDIF inputs on the AVR507.

Modern TVs, etc only seem to have HDMI and USB connectors

 

[PurpleAngel]

Modern TVs, etc only seem to have HDMI and USB connectors

Do you have Cable TV or Satellite TV, usually these have optical outputs, on the box that controls those services.
When you get a 4K Blu-ray player, get one with an optical output jack.