The boards will mount using double sided tape (included) with the flat side of the board parallel to back of the player. The board comes with panel mount connectors which connect to molex connectors on the board, so yes the Empeg would need to be cut. They install just to the left of the box in the picture. I have not done this to one of mine yet, as I am still settling on the final layout on the production board. I am devising a way to run the coax signal out of the mic in cable (this option would require no cutting), but am currently unable to locate a source for the connectors needed.

There is no impact on the normal output of the Empeg. You wouldn't know it was installed unless you looked for the connectors on the back. In fact, both operate simultaneously. Volume and 2 channel EQ are also functional through the digital output (analog too). The Empeg can be used just as it always has been. You can use the Empeg in the home to feed a DAC and still use its standard analog outs in the car.

Hope this helps,

Stu