These are a well priced and extremely comfortable headphone that would do well for extended listening sessions. Over ear, open back design offers a more spacious presentation similar to listening to a pair of loudspeakers. Great value for a wired headphone.

HD559 Specifications

• Impedance: 50 Ω

• Sound pressure level (SPL): 108dBSPL (1kHz/1Vrms)

• THD, total harmonic distortion: <0.2% (1kHz, 100dBSPL)

• Frequency band: 14- 26,000 Hz