DACs and bass response?

Here is what I determined by designing and building many digital cables, and making measurements on those and others:

1) the 75 ohm impedance of the cable is critical and should be uniform over it's length

2) Termination of the 75 ohm cable to RCA plugs is a non-starter.  Must be terminated to a proper 75 ohm connector, and a good one, like RF or BNC.

3) Use of pure silver in the 75 ohm cable is preferred, much better tonality.

4) 100% shield is beneficial

5) Conductor gauge is critical.  Should be 26 Gauge or smaller to avoid skin-effect

Here are a few measurements:

http://www.audiocircle.com/index.php?topic=154425.0

Empirical Audio

Here is what I determined by designing and building many digital cables, and making measurements on those and others:

1) the 75 ohm impedance of the cable is critical and should be uniform over it's length

2) Termination of the 75 ohm cable to RCA plugs is a non-starter. Must be terminated to a proper 75 ohm connector, and a good one, like RF or BNC.

3) Use of pure silver in the 75 ohm cable is preferred, much better tonality.

4) 100% shield is beneficial

5) Conductor gauge is critical. Should be 26 Gauge or smaller to avoid skin-effect
.......

Take a look at these plots:

http://www.audiocircle.com/index.php?topic=154425.0