The new sophisticated DT 990 is a headphone for enthusiasts and will satisfy you with a perfect sound and comfort. The use of high-quality material and the distinctive design underline the standard of a high end model. The headphone is still handcrafted in Germany warranting a high quality. The present version with 250 Ohms is suitable for the use with hi-fi systems (as longs as they have a sufficiently dimensioned headphones output) or with purpose-built headphone amplifiers. For the use with portable devices we recommend the 32 Ohms version. Open back design Strong bass and treble Robust spring steel headband Single-sided cable Soft headband pad Gold-plated 1/8" mini stereo jack plug (3.5 mm) and 1/4" adapter (6.35 mm) Product reviews: "The first week i've been listening to music much more often because these make it sound so much better." (noise-reducingheadphones.blogspot.com, 09/2010) "... excellent open ear design, true sound reproduction..." (bestheadphonereview.com, 08/2010) "The clarity of the DT 990s is superb. You hear everything, whether you want to or not." (audioheadphonesblog.com, 07/2010) - Analytical and high-resolution audio reproduction - Strong bass and treble - Lightest headphone of its class