Using it, PRS-80 so far so good, tough build quality.

.wav can play max 44.1khz , 16 bits (CD quality)
cant play flac

But able to play any CD format HDCD no problem

I can say it customize like hell, damn lots of option

Mine still going strong...... Using the SDCard slot instead of USB and find the SDCard to sound better.... With those highspeed and gold plated SDCard the sound even nicer.......

eh bro how you mean? how do you feel the sound better?
I using USB with WAV format that converted from FLAC in lossless mode i found no different wo...
have u tested with RTA? seriously have different meh?

I tested WAV at 16bit 48hz , it is compatible
for those who downloaded the FLAC with 24/96 can downmix to that n try
i using foobar to convert other convertor may not work due to the mode might not lossless or something else

sound quality of p80rs2 are slightly better than 80prs

To me data retrieval better with SDCard but maybe it's also due to the usb cable I use it's the one came with the HU and I never got chance to compare with better usb stick only normal one. Using those weather proof hi speed SDCard gold plated type that photographer use.
Anyway that my opinion only and I play flac using iphone and that the best sound quality so far. Too bad the HU don't support flac.

U havent try playing with CD...
HDCD or nice studio CD very good.... better than USB/FLAC

Yeah, a good cd always good but in a car prone to vibration you cannot get the best out of it. Put a good cd on a good home hifi system and then you know how good it can sound.

i tested, the sound quality are same
haha ya HU dont support FLAC 24/96 lol

Suggest you try a few type of SDCard. my case the better SDCard sound better but that me maybe also me ear playing trick on me.

3% better than FLAC

seriously, i seriously say flac is still not as as good CD rip

even though they claim "Lossless" the process of ripping CD> flac surely some noise generate / data lose/ cutoff

car cd are preloaded into memore nowadays...it's just that the cd player are not as highend as home use cd player....car audio focus on tuning flexibility rather than invest all money into building the lens and dac....

if system is good then flac will have quite some big diff compare to cd..if system is normal, usb/cd sound near the same...

only for those who understand how file are encrypted....

just slightly different than CD...you can simply google and look for those hardcore ppl at oversea their testing results..
example: http://www.stereophile.com/features/308mp3cd

the reason why you can hear some different is most likely bcoz your converter setting problem, bcoz some of the converter already preset with some kind of noisy reduction or enhancement, you have to disable all that and make sure is lossless converting...
the best one is using foobar but you must installed the latest FLAC decoder version in order for you the get the highest quality of FLAC format...

beside some CD having HD-CD SACD those only can be play by supported device which is HIFI level of audiophile player, most the car dont support except old school player like machitosh or clarion D2 series etc etc...and yes for those CD is better than FLAC a lot(if your player able to playback such format of disc)

This is my take on this...... media....
CD - Vibration is the main issue even with memory as car moving sure will have vibration and noise injected from engine and others.
USB input - Less vibration, but using cable (unless high end usb cable) there is interference (EMI/EFI) to deal with unless plug in direct but troublesome as the usb input at the back not the front plate....
SDCard - convenient as in front. Also no cable as direct plug in. With a good SDCard less worry of data loss.

Also, Car enviroment need to rely on processing such as time alignment and others. Not that easy to adjust sweet spot as listening position are fixed and speaker position are fixed and cannot simple move around like home enviroment.

What I did to test that time was I took a CD and I ripped and put it into a 2 GB USB stick and also a 2 GB SDCard. Slot all into the HU, CD into CD slot, SDCard into SD slot and the USB into USB cable. Found I like the SD Slot the best so decided to use it as the main source.

This post has been edited by scsoo: Apr 21 2014, 10:27 AM

encoded bro, by default no security encryption involved

Maybe the Boss one different.. encoded with security encrytion and his system plays encrypted file.
Put the file in our normal player will hear "this recording will self-destruct in 5 second" and booom... there goes our HU...

maybe can...to blown all those hu with bass and treble all the way up....