I had a bit of a nap while you folks bantered to and fro. I'm still recovering.
I don't have any transformers other than from a supplier and we know what they cost today.
The input is strictly a Euro one so whatever that is DIN or ??
The EQ response is unknown.
As I have stated the idea in schematic form is not found with Google.
I had even foolishly asked Chat GPT v3.5, and every iteration resulted in gibberish in an ASCII schematic, circa 1993.
It had no idea including 80% of the results being a high to low circuit in its description.
It's last go was the very clear circuit as shown below.
Vin (Low Impedance)
|
C1
|
+-------- Out (High Impedance)
|
|
R1
|
|
---
-
|
|
C2
|
GND
It's quite clear and one can even see how the op-amp is doing the transformation,
yes there's a TLO-71 or 81 in there.....
![Laughing :-DD](https://www.eevblog.com/forum/Smileys/default/smiley_laughing.gif.pagespeed.ce._hfWAz_QHO.gif)
Please help me in finding a solution to this issue, I only want to listen to my programs and music via hollow-state fidelity and technology.