Harman Kardon XT-2 Audio Microphone/MC SUT Step-Up Transformers Denon DL-103
These have impedance of 120/250 primary to 50K secondary. It has a 1:14 step-up ratio or 23dB of gain or double the grain if use half primary. Also, of course, great for microphone inputs. These have 9-pin “octal” plug in bases so make sure your socket is the NINE pin type.
