Alright...
"-how long do the battery last? for audio cd and mp3?"
iRiver claims you will get about 22/55 hours (just like iMP-550). Note: This is with the external battery pack, and 55 hours is with WMA at 64kbps. I personally get about 20 hours and 45 hours (with MP3 at 128-320 sometimes VBR). My volume is about 5-10/40, so battery is probably lower for you...
"-does it have a 5-bars EQ setting or just bass and treble boost?"
just Bass and Treble...
"-also do you like the black metal top?"
The overall design is the only reason I chose 450 over 550...So, yes I do like the black metal top. The chrome is nice too!
"can you confirm that the user EQ bass increase goes to 18db?"
Yes, the bass increase is 18db.
"-In the main menu, when you go over the EQ settings tab, what's that fish like thing on top???
not sure, maybe an indication that the player is connected to the adaptor plug"
I said in the main menu NOT the now playing screen...
Basically an iMP-450 is a iMP-550 with a different design and half the amount of skip protection and no OGG Firmware yet...
Sonically, MP3, WMA, and ASF never sounded better.
But Redbook CD's don'y play as well as my Panasonic SL-231C (10s anti skip). The sound is slight degraded, even when using 40s anti skip. 160 anti skip really makes it sound bad (sounds more compressed).
NO LINE OUT!!! The line-out is still a second headphone jack!
The Eq is next to mediocre...The iMP-50 has more configuration!
This PCDP is amazing though... its number is higher than some others yet they're better in ALL aspects except battery life!
"-Does anyone have an iMP-450?
only you"
That hurts...