"Studio headphones Closed back, Circumaural, Impedance: 36 Ohm, Sound pressure: 112 dB SPL / V, Converter: 53 mm, 1.5 Tesla magnetic-system, Ultralight two-layer voice coil, Transmission range: 5 - 54,000 Hz, Rated load..."

"High-End In-Ear Headphones Handmade, Tesla technology, Frequency range: 8 - 48000 Hz, Max. SPL 110 dB / 1mW / 500Hz, Impedance: 16 ohms, Ergonomic housing in lightweight construction, Closed, Cable running behind the..."