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Characteristics
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- Low impendance is better for battery powered devices as require less
voltage. Higher sensivity means the higher volume.
- There is open and close earphones. The sound from closed earphones
does not escape outside and had some reduction of ambient noise.
Requirements
============
- Мягкие наушники
- Fold for storage
- Detachable cable
- Closed cans earphones,
- Opion to attache usb mp3 directly
Earphones
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1. Sennheiser HD380 (100 EUR, the current ones)
2. Audio-Technica ATH-M50S (144 EUR)
3. HD598, HD449, HD429S
Wireless
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- Plantronics BackBeatPro looks interesting.
Bluetooth (i.e. works with phone) or wired-modes. Noise cancelation. Disadvantages is price of 200 EUR
and only ~24h on embedded batteries.
- Bluetooth 4.0 A2DP seems good quality, but degrades on the move. Still fine if it is above the belt.
- Transmitting to multiple bluetooth earphones is possible with "Multi-stream transmitters". Though, expensive.
- H-366T Mehrpunkt Bluetooth 4.0 Audio Transmitter (~ 16 EUR)
* alternative is configuring multidevice output with paprefs
* buying audio Y-splitter and using simple bluetooth transmiters.
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