Z-Enhancer EQ selector.
More power simply makes every unit sound better.
Some CD players now show CD text readout on the display. Clarion's unique Rotary Control that feels good to the touch, and makes easy adjustments to volume, balance, fade, bass and treble. And cassette players can also control our CD changers. In fact, we have CD changers that connect to the standard OEM head units and allow them to display and act as controllers. It sounds great because it's direct audio, not like other solutions that have to come through the FM tuner.