The Sennheiser HD 380 Pro Headphones are over-the-ear style, closed-back, folding headphones with a 3.5mm connector and a 1/4" adapter. They are good "all around" headphones, suitable for studio and just casual listening. At over 50 Ohms, they require some amplification but can certainly still be used with smartphones. The sound may come across flatter without proper amplification. These aren't strictly noise-cancelling headphones but they are closed-back and keep out a fair amount of ambient sound. These offer good clarity and balanced bass – accurate sound but with enough color to be casually enjoyable. They are cushioned in a way to be worn comfortably for long periods of time, though please note these do have a coiled cord which not everybody loves. These are a good choice for monitoring, mixing, recording, and just general music enjoyment.

• Sennheiser HD 380 Pro Headphones

• 1/4" Screw-On Jack Adapter

• Pouch

• Dynamic Duofol™ Driver Closed-Back Type

• Frequency Response: 8-27,000 Hz

• Impedance: 54 Ohms

• Sensitivity: 110 dB

• 9.8' Cord Length

• 3.5mm Jack with 1/4" Adapter Plug

• Weight: 7.7 oz

There is no manual for this product.