Ultrasone Pro 900i Closed-Back Headphones (Open Box, Missing Packaging) ISONG Due to the lack of

Due to the lack of stacking space

The only difference to the F-type is the material used for the portion that comes in contact with the skin

and a full-spectrum uplift that will captivate even the most discerning ears

Bearing Resistance: 7~8KGF-CM

2Vrms 20Hz~ 20KHz: attenuation < 0

Ultrasone Pro 900i Closed-Back Headphones (Open Box, Missing Packaging) ISONG Due to the lack ofUltrasone Pro 900i Pro Quality Sound: Large 40mm titanium plated drivers provide exact sound reproduction. Combined with Ultrasones S Logic Surround Sound Technology, this puts you right into the center of the music. Safer Listening: In addition to providing a realistic sonic experience, the S Logic technology provides the same loudness sensation as other headphones, with an up to 40% lower dB output. This lets you set the volume lower on your music