Morning all!

 

Having just learned that at least one class 423 suburban EMU from Munich has been temporarily hired to Frankfurt I was just thinking how I would be looking forward to riding on that one. And here's why:

 

from the cab of a 1st batch 423 with original GTO inverters whose squeal is quite unique .

 

However, the 423s sound quite differently from the 2nd batch onwards:

 

Am I weird?