Continuing in my search for high quality link signal transfer, I have developed the current loop transmitter module. It is a voltage controlled current source, operating in pure SE class A. The signal current is 12mA +/-6mA, 2mA/V. Cable terminated by resistor 50 Ohm - 200 Ohm. AC coupled input of following amplifier is needed. The sonic results are more than promising, compared to any previous principles.