Sennheiser has a 50+ year reputation of designing innovative German engineered electronics. Sennheiser professional award winning stereo headphones deliver power brilliant sound in a rugged yet lightweight instrument.  They deliver fine nuances of music including a deep resonant bass response.  Whether you choose the Sennheiser MXL51 earbuds for your mp3 player or the Sennheiser HD600 Hi-Fi Professional headphones for your home or studio; you will always receive professional performance.  Sennheiser headphones are extremely comfortable for extended listening sessions.  All of this at a price you can afford.