This is the same test, recorded by placing the TASCAM DR-07 MkII in front of the Spark and using the two condenser mics integrated in the recorder.
The weird thing is that when I listened to the recording it didn't sound as different from the cable recording as I would have expected, while they ARE different from what comes out of the Spark's speakers, as far as my ears are concerned.
Anyway, here they are...
With S@muele's settings: https://www.dropbox.com/s/qx8qpx44xapjg ... e.mp3?dl=0
With my settings: https://www.dropbox.com/s/0w06999j5j8qk ... e.mp3?dl=0
Thank you all for your patience.