Is it possible for pro channel to work in sonar 8 ?

No it is a feature they didn't introduce until later versions.

Hi. Sycraft is right. I believe it came into existence in X1 Expanded. 
Here is a comparison of the current products: http://www.cakewalk.com/Documentation?product=SONAR&language=3&help=Comparison.html
 
All the best.

Well remembered Ken - X1 Expanded (remember that?) is the first version to include them.

Bristol_Jonesey
Well remembered Ken - X1 Expanded (remember that?) is the first version to include them.

I didn't have that version, Colin I was still rocking SONAR 4 Producer at that time 
Went from from that to X3 Quite the jump
I think I remembered you mentioning that in another thread I read...
All the best.

what was difference between Sonar X1 and Sonar X1 Expanded ?

IIRC it was PC and some extra content... Colin will know, I wasn't there

Blimey, that takes me back.
 
Definitely the Pro Channel. It was also around that time when FX chains were introduced.
 
I really can't remember what was exclusive to the Expanded version, other than the PC
 
I think Expanded eventually got to X1d?
 
 

Pro Channel was introduced in X1 Producer. X1 Expanded added the ability to add more modules. 

John
Pro Channel was introduced in X1 Producer. X1 Expanded added the ability to add more modules. 

That's what I thought. But I didn't know for sure. I just didn't want to sound uninformed
(cough, cough, like BJ and ken, cough, cough.)
 
Im just kidding, I actually couldn't even remember. Sonar X1 Producer was my 3rd purchase from Cakewalk (well 5th but others I don't really count. Guitar tracks, exc) I used Sonar 8 and 8.5 in the studio I worked in and owned Pro Audio 9.0 and HS 6, 7XL.
I've owned all 4 of the X series and I must say, its been a pleasure.