Adept Sennheiser, but having had several small small bp. reliability recently with this brand (loss of contact at the son of the helmet, jack breaking net in the socket), I decided to go in for this new Koss headphones. For now all is well. The sound quality is really the appointment (relative to price: it's a great helmet for an amateur musician, maybe not for a pro who is in any way ready to put much more expensive.). I see the strength of son and connector after two to three years of use, because it really is at this point that the quality of a helmet judge, not just a first impression at the sound quality. For now all is well. I recommend.
