Equipment that is "fully balanced" inside has duplicate amplifiers such that the + & - legs of the circuit are phase-inverted and referenced separately to a common ground. When the inverted phases are summed together at the end of circuit, noise from one side cancels noise from the other (achieving "common mode noise rejection"). This offers greater signal-to-noise ratio relative to a single-ended circuit utilizing one amplifier of comparable quality. The fully balanced circuit with twice the components is of course also more expensive. The cable has three pins & a shield, not five as mentioned by Ehart.
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- 10 posts total
- 10 posts total