Koss Porta Pro Classic on-ear headphones, black/silver
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Choose countryKoss Porta Pro Classic are wired on-ear headphones with foam ear cushions and an open, hear-through sound that lets you remain aware of surrounding sounds. This black and silver model weighs 60 g and folds for carrying.
Dynamic drivers deliver deep bass across a 15–25 000 Hz frequency response. Rigid Mylar diaphragms help minimise mechanical distortion, while neodymium iron boron magnets and oxygen-free copper voice coils support sound reproduction and signal conduction.
The 1.2 m cable has a 3.5 mm jack for connecting to an audio source. This model has neither a remote control nor active noise cancellation (ANC).
| Type | Headphones |
|---|---|
| Colour | Black / silver |
| Weight | 60 g |
| Connection | Wired |
| Cable length | 1.2 m |
| Wearing style | On-ear |
| Impedance | 60 Ω |
| Sound pressure level at 1 kHz | 101 dB |
| Frequency response | 15–25 000 Hz |
| Transducer principle | Dynamic |
| 3.5 mm jack | 1 |
| Foldable design | Yes |
| Remote control | No |
| Active noise cancellation (ANC) | No |
| Diaphragm material | Mylar |
| Magnet material | Neodymium iron boron |
| Voice coil material | Oxygen-free copper |
| Ear cushions | Foam |
| EAN | 0021299147764 |
|---|
How do these headphones connect to an audio source?
They have a 1.2 m cable with a 3.5 mm jack for connecting to a matching socket on your device.
Do they block surrounding noise?
They have no active noise cancellation (ANC). Their open, hear-through sound and foam ear cushions let you hear surrounding sounds.
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