Can I connect headphones to the HD6 speakers?

The HD6's  do not come with a dedicated headphone out. If you wanted to use headphones with our HD6 speakers, you'd want to incorporate a headphone amp, like our D1 24-bit DAC/Headphone Amp, into your set up.  When using a device like this, the audio would be cut off to your speakers when your headphones are plugged in, allowing you to enjoy the audio coming through the headphones without any interruption from your speakers.