Excellent stereo separation, resulting in great imaging and depth of field. Also gives greater dynamic headroom and image stability. Separate transformer windings for preamp. Separate windings for digital remote control electronics. Ensures that none of the digital electronic control artefacts get onto any analogue power supply lines.
True benefit is full remote control with no sonic losses.
Full remote control. Remote control of volume and select. Very low high-frequency distortion up to 60kHz. It's charms grow with time to the point where it starts to make other amplifiers sound wrong. This is a very fine set of test results.