Explanation thumb|250px|Fig. 1. Balanced line in twisted pair format. This line is intended for use with 2-wire circuits. thumb|250px|Fig. 2. Balanced line in star quad format. This line is intended for use with 4-wire circuits or two 2-wire circuits. It is also used with microphone signals in professional audio. thumb|250px|Fig. 3. Balanced line in DM quad format. This line is intended for use with 4-wire circuits or two 2-wire circuits. thumb|250px|Fig. 4. Balanced line in twin lead format. This line is intended for use with RF circuits, particularly aerials. Transmission of a signal over a balanced line reduces the influence of noise or interference due to external stray electric fields. Any external signal sources tend to induce only a common-mode signal on the line, and the balanced impedances to ground minimizes differential pickup due to stray electric fields. The conductors are sometimes twisted together to ensure that each conductor is equally exposed to any external magnetic fields that could induce unwanted noise.
explanation thumb|250px|fig 1 balanced line in twisted pair format this line is intended for use with 2-wire circuits thumb|250px|fig 2 balanced line in star quad format this line is intended for use with 4-wire circuits or two 2-wire circuits it is also used with microphone signals in professional audio thumb|250px|fig 3 balanced line in dm quad format this line is intended for use with 4-wire circuits or two 2-wire circuits thumb|250px|fig 4 balanced line in twin lead format this line is intended for use with rf circuits particularly aerials transmission of a signal over a balanced line reduces the influence of noise or interference due to external stray electric fields any external signal sources tend to induce only a common-mode signal on the line and the balanced impedances to ground minimizes differential pickup due to stray electric fields the conductors are sometimes twisted together to ensure that each conductor is equally exposed to any external magnetic fields that could induce unwanted noise