My Clari-Fi magic box arrived. What do you want to know about it?

Remember Clari-Fi? The $50 passive gadget which makes lots of big claims about improving the sound of MP3? Despite my scepticism, the inventor has kindly sent me one to try. Before I get to cracking it open and posting pictures of the guts, what experiments would you like me to perform?
My initial thoughts after five minutes of listening via those fancy Sony PFR-V1 headphones:

1. Quality control = fail. My one has a loose connection so one channel cuts out unless you hold the wire in.

2. It's certainly cutting off a bit of top end, but much more subtly than the 'treble reducer' EQ preset on the ipod. I also felt I was getting a rather different midrange but I have ears of clay and wool, so who knows?

3. I feel I can hear a bit of distortion at high levels - fairly warm, soft distortion that isn't there when the module is absent. The module cuts a lot of volume (maybe 10% of the travel of the iPod volume control), so that could account for this. It certainly overdrives when placed after the headphone booster that comes with the PFR-V1s, but that's probably not a fair test.