06 Honda Radio volume Low
 

I looked in the owners manual for any information on the radio. No help!
Seems like my radio goes only to volume 40 indication. How do you over ride
the default value? Can it be changed? Or am I out of luck and just need to
replace the whole thing with an aftermarket unit...Paul

P.S. It's an 06 Odyssey with the built-in 6 cd changer