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This attractive headphone also features a large-aperture 50mm dome drivers deliver pristine tone and sonic punch, 1/4" stereo full-size plug adapter and Superlux storage / travel pouch. This headphone comes terminated to a 3.5mm mini plug; a full-size 1/4' stereo adapter plug is contained in the Superlux package along with soft travel pouch / storage bag. The Superlux HD-681 headphone is brand new in its original packaging.
Impedance @ 1kHz: 32 ohms
Sensitivity: 98 dB SPL/V
Isolation: -10dB ~ -15dB