“ These are amazing. If you can get them for a low price, do so. They are a bit uncomfortable, so you might not want to use them for long periods of time. Their clarity is fantastic though, the bass while not being big in quantity is extremely accurate and with a decent amp (I'm using the 300 Ohm version of the headphones) it is just fantastic in quality. Despite being a closed headphone...” --FirsToStrike
SYBA Oblanc U.F.O. Circumaural Amazing Powered Subwoofer 2.1 Audio Headphones, Full-range State-of-the-art Listening Experience
“ A great headphone for around $50.00. I mainly use them for gaming and voice chat and padding on the earpiece is comfortable enough to wear for a few hours. But during warmer environment, it felt the padding wasn't breathable. ” --evalime
From an old MB Quart brochure (circa late 80s): The Quart Phone 50 Dynamic, semi-open headphone. Coupling: circumaural. Frequency response: 10 Hz - 22 kHz. Nominal Impedance: 120 ohms (x2). Sound Pressure Level: 96 dB. Rated Power Handling: 0.1 watt. Distortion <0.5%. Weight (without cord): 245 grams.
MB Quart QP400 is top of the line semi-open headphone from the last MB Quart lineup. QP400 have cardamatic suspension that together with soft plush earpads make them very comfortable.
Stereo headset with microphone. Speaker: 40 mm. Microphone unit: 6x5 mm. Sensitivity: 105db ± 3db. Impedance: 32 Ω. Frequency response: 20 Hz – 20000 Hz. Plug types: 3.5 mm stereo
Earphone headset with microphone. Ear muff: 15 mm. Microphone: 6x5 mm. Sensitivity: 105 db ± 3 db. Impedance: 32 Ω. Frequency response: 20 Hz – 20000 Hz. Plug types: 3.5 mm stereo
Stereo Headphone with Built-in Microphone. This headset with its fashion design has been created to be used with multimedia, gaming, Internet and IP Phone applications. Its comfortable headset allows long duration of use. Connect the 3.5 mm stereo plugs of the headset to Line Out and microphone plugs of your audio peripheral.