i went through a lot of headphones, inc sennheiser, in the end i got some sony earbuds, briiliant sound, and deep deep bass lines, all out a 9mm in the ear driver. very nice, model EX71
because there earbuds, the ambient noise is almost gone compared to most i tried.
In the box: Sony MDR-EX71SL earphones, 3-foot extension cord, 1 set of small ear plugs, 1 set of medium ear plugs, 1 set of large ear plugs, user's manual, soft carrying case, warranty information
Type: In-ear, dynamic
Open ear: No
Diaphragm: 9 mm
Includes .25-inch adapter: No
Cord length: 1.5 feet (includes separate 3.3-foot extension cord)
Nominal impedance: 16 ohms at 1 kHz
Sensitivity: 100 db/mW
Frequency response: 6 to 23,000 Hz
Batteries: None
Item weight: .1 pounds
http://www.amazon.com/exec/obidos/t...9-6007819?v=glance&s=electronics&vi=tech-data