I would say that the Pioneer 8650 is actually a pretty full featured HU(13 band graphics EQ, ability to run 3-way active(2-way front + subwoofer), it's replacement model the P80RS is an even better unit, comes with 16 band seperate left and right graphics EQ, same 3-way active crossover with more crossover points for better flexibility.

The P1-Y is purely show, IMO it's not much of a compare towards the others u mentioned. Notably, the others have a more advanced crossover with the ability to run active.

The 8650 can still be had if you find the right places, i think can still get it for about RM1500 nowadays, else, you'll have to settle for the P80RS for about the same features.

This post has been edited by GRexer: Jul 9 2006, 07:29 PM

Don't think P80RS has an optical connection, it's nothing like the P9/P90 though More like a freshened up 8650MP, wif more crossover points, a seperate left and right EQ(very professional, almost like those high end processors as i believe left and right WOULD always need different equalization due to the in-car environment), though, wif a lower pre-out voltage of 4V instead of the original 6.5V in the 8650

I would say if you are considering the Pioneer, if you can still find 8650 around it's worth the buy below RM1500.