The HD681 series headphones offer 3 distinctive sound profiles, each with its own character: The HD681 features an exceptionally deep low frequency, the HD681F has a flat extended frequency response, and the HD681B has an excellent balanced character, and powerful bass punch.
Flat extended frequency response “Front row” sound image, great for pop music and capturing that sweet vocal sound.
• Type: Dynamic, Semi-open
• Driver: Ф 50mm, neodymium
• Sensitivity: 98dB SPL (1mW)
• Frequency Response: 10-30,000Hz
• Maximum Power: 300 mW
• Rated Impedance: 32 Ohm (copper-coated aluminum wire)
• Earpad: leather
• Cable: 2.5-meter (8.2 ft.) straight, single-sided
• Connectors: Screw-on gold plated stereo mini plug
• Headphone Caliper Pressure: Approx. 3.5N
• Net Weight: 276 g