[b3lha]

Originally Posted by SVXdc

Interesting. So wherever you leave the knob, the steering wheel volume buttons can only set lower levels, right? (I seriously doubt there's a little motor inside that can turn the knob up )

You can turn the volume up and down.
The knob is not a potentiometer. It's digital. You can rotate it an infinite number of turns in each direction. The head unit number is P411 same as the USDM model. Somebody has offered to send me a USDM unit to compare to the JDM one. They can't be very different.

The CD controller is a P611.