This model is very similar to the 205 model, the
only difference is the stand-by pushbutton. The little brass button that you can see in the rear
side of the chassis is used to remove the sound without switching
off the radio.
out this button you cut off the signal from the low frequency unit,
all the tubes remains lighted up and the radio is in stand-by
reactivate the volume you have just to push the button and the sound