These are all my own designs.
Nothing too radical. Looked at the datasheets for all the ICs and implemented according
to the Manufacturer. Let's face it, they know what they're doing.
1541 in differential mode.
Both (1540 & 1541) feed a transformer for I/V conversion and summing of the o/p
and inverted o/p.
The tx's then feed a very simple Valve o/p stage.

WM8805 SPDIF Receiver.

I am very, very pleased with the outcome of both builds.