Clip Zip vs. Clip+ / supported formats, known issues

[asymsucon]

Hi,
sorry about slightly broader topic brought up in a single thread.
I'm looking for a rockboxed player to replace Panasonic discman, and it seems Clip+ and Clip Zip are the best alternatives.
But there are few things I prefer to know before making the final purchase.

Are there any differences in hardware between Clip+ and Zip, aside from miniUSB on + and microUSB on Zip and screen?
How well they handle Opus in current versions?
How well they handle non-protected AAC-LC with True VBR (encoded through qaac) in current versions? Quite well
How bad is the CPU/NAND chirping in sensitive headphones (32Ohm, 112dB/mW). Would -10dB pad help a bit?
Is 48kHz (16/48) natively supported? Yes
What's the maximum quality for voice recording? Seems to be PCM 48/16
Does the 8000 tracks limit affect playback through folders? I don't need to build any database, just the basic "play through folders". No limit
Non-distorted sine amplitude for unloaded headphone out (in Vrms/Vp-p)? Expected to be around 600mVrms

Thanks a lot!

[saratoga]

They're exactly the same devices aside from the screen, buttons, radio chip and usb connector.

48 kHz is supported.  There is no track limit.

[asymsucon]

Thanks for reply.
About Opus - does Clip+ play and correctly seek opus files, encoded with VBR and max. complexity?
Here's an example (gapless, 160kbps VBR, comp=10):
https://mega.nz/#!OMYEmJiD!T-pA5pjSwNdqDucaOB9sor-Jd5XyvyoDb7tBc3yFQO4

Win32 simulator refuses to process any sort of opus.
Test on a real device would be highly appreciated. 

[johnb]

Works fine on my Clip+.

[asymsucon]

Thanks for the test! 
The reason I mentioned seeking is this: http://forums.rockbox.org/index.php?topic=50848.0
For the record, are you running 16e22b5 ?

[johnb]

No, I am running the version from this thread
http://forums.rockbox.org/index.php?topic=51589.new;topicseen#new
which also bases on the latest dev build.

[[Saint]]

About Opus - does Clip+ play and correctly seek opus files, encoded with VBR and max. complexity?

I am not aware of any technical reason as to why it shouldn't.

Win32 simulator refuses to process any sort of opus.

It is a simulator, not an emulator. If you want a full desktop Rockbox experience, you would need to build the SDL application.
A foothold into this process can be gained at the development guide section of the Rockbox wiki.


[Saint]

[asymsucon]

It is a simulator, not an emulator. If you want a full desktop Rockbox experience, you would need to build the SDL application.
A foothold into this process can be gained at the development guide section of the Rockbox wiki.

The simulator will do just fine, however it's strange that all audio formats works well with it, only Opus fails.

Few tracked files don't play correctly in both sim and the unit itself (mainly IT)
It could be that some of the extended effects and filters are not (yet) supported.
Here's one such file:
https://dl.dropboxusercontent.com/u/928494/Saga%20Musix%20-%20Shooting%20Star.it

[folky]

I have used both Clip+ and Clip Zip with opus-files. I convert most of my podcasts to opus, so I really know what I'm writing about. I think it worked already with 3.13, but I'm on daily builds, so it's quite a time since I last used the same version as 3.13.

BTW. OffTopic: If someone knows a good tool to split opus-files like mp3splt and oggsplt does for mp3 and ogg I would like to hear/read about it.