[KPAH]

So, I openned it up:

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I would give the make a "strong" point. Neat, but way far from perfect.
The case is paperish MDF.
Look at the IR sensor mount above the left speeker. The transistor legs are just bent to peep in the port.
By the way, when holding "Volume-" on the remote for long, the device shuts dead off, same as with the "Power" remote button.
The easiest way fix the above mentioned "bending" of the USB and MMC ports, is to epoxy a little "shelf" upnder the lower screws of the back ports panel. Or add some "legs" to it so it would rest on the "floor" rather than on the back side only.

Talking about the speakers:

That is the source of warm, immersive tube sound.
The markings say CY-16, 4Ohms 3Wt
The CY-16 is probably the model of the device - I've seen this number in some listings.

The battery:

Is 3.7V 500mah litium-ion. Nothing special and quite bulky.

The main board:

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Forgot to take apicture of the other board, will do.

Still figuring out where to solder the line-out, so it would disable speakers when connected.
Any ideas?