Balanced vs. Unbalanced - What does it mean?


I have a McIntosh MC402, I am using the Unbalanced inputs - my dealer hooked it up for me. Everything sounds fine but I am wondering about the Balanced input. When do they get used? Does it sound different? Which is best?
cam3366

Showing 2 responses by kr4

Balanced connections mean that there are two signal wires per channel, each carrying a different polarity of the same signal and twisted together. There is no ground, per se, as any ground lead is only to shield the wires and the two signal leads, only, are connected between the two components. The most significant result is that any RF or electrical noise picked up by these leads is effectively canceled because of the differential termination that subtracts one from the other at the (differential) termiantion. This will make for less noise in electrically noisy environments or with VERY long runs.

Unbalanced consists of a signal lead and ground lead.

In practice, there is no real difference unless you have unusual conditions such as RF noise and/or runs of many meters. My interconnects are 10 meters and there is no audible difference between balanced and unbalanced except that the XLR connectors on the balanced lines are more secure and durable.

Kal
Dgaylin-

I am not retracting my comments but it is certainly possible for a given component to sound better via one output vs. another depending on the design of that particular component. In general and in normal environments, there should be no difference between bal and unbal connections.

Kal