Undistorted transmission of analogue audio signals

摘要

The signal input 11 is coupled to a difference amplifier 2 that receives a feedback 22 from the output port 51. A passive connection is made between the signal source 12 and the signal sink 52, and the signal current is coupled over a separate cable 34 to the reference point 61 of the supply 6. The signal lines 31-34 are screened 35-38, and the transmission path is coupled to a resistor 4. Additional screening 39 against induced noise is connected to the common reference point 52.