I wouldn't use bone conduction with the digital. They're not as good a modestly priced over ear headphones - but they're perfect for listening to Charles Rosen playing the same Bach as I am. I can fit my good phones over my ears at the same time - and they work well with a real piano. I'm playing them at a lower volume - and seeing how in synch I am with the real performer. It is through such efforts that I strive to move from bad playing to inspired mediocrity, the highest level of performance I can hope to achieve.