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RE: Why doesn't the Bal Out on Sonys double the voltage

i suspect they padded it down internally so that the balanced terminals maintain the same output voltage as the unbalanced terminals.

I bet they felt that it is paramount not to inconvenience the end user to have to change the volume control on their amplifiers when they switch from balanced to the other unbalanced inputs and vice versa.

I tell you a joke -

When we were testing the balanced vs the unbalanced connections used between the Yamaha CD-S3000 CD player and the Yamaha A-S3000 integrated amplifier, we were flabbergasted that the balanced connections sounded softer by as much as 6dB.

A look behind the amp's rear panel soon clear the mystery.

There is an attenuator switch for the sole balanced inputs, which pads incoming balanced signal by 6dB, so that the playback levels are in parity with the other unbalanced inputs.

But, the balanced output from the CD-S3000 are also padded so that their output level is the same as its unbalanced outputs.

The nett result is - level is down by 6dB when using balanced connections with the attenuation switch engaged on the amp.

Stupid, isn't it?


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