These Taiwanese headphones using a hybrid of dynamic drivers and Air Motion Transformer (AMT) technology were apparently presented at CES 2014:
The only other headphones to use the Air Motion Transformer principle seem to be:
Frequency Response: 15Hz~45KHz
Tweeter: 40mm AMT tweeter
Sensibility in dB/1W/1m: 105dB
Did anybody perchance notice them and can tell us more?