No, but I'd like to hear them just to satisfy my curiosity. They have a power handling of a watt (which does not sound a lot, but most headphones can handle amounts quoted in milliwatts), and need to be plugged into a speaker amp or their own special amplifier to perform their best.

Speaking of AKG's, I've got a pair of AKG K271S on my bonce at the moment. Fantastic sound quality for the money....