Sony MDRPQ4/PNK A proposal – the music life ahead is “wireless”, DR-BT50, Bluetooth Headphones

Bluetooth® Headphones

A proposal – the music life ahead is “wireless”

Bluetooth® wireless technology is a communication technology which enables wireless exchange of data from mobile equipment such as portable audio, mobile phones and notebook computers.

Enjoy music streaming from portable audio devices, notebooks and mobile phones freely. Leave the wires behind, it’s time to go unplugged with Bluetooth®.

Connection diagram

Jog switch

Operates various functions (playing/pausing music, etc) when listening to music.

Listening to music

POWER button

Group cueing

- Button

+ Button

VOLUME + Button

VOLUME - Button

DR-BT50

High quality overband Bluetooth® stereo headphones

•Enjoy stereo music playback via A2DP

•Closed-type Bluetooth® stereo headphones with pressure-dispersion ear pads for better wearing comfort

•Large 40mm driver units with 360kJ/m3 high-power neodymium magnet for superior sound quality

•17 hours of communication time/music playback

•Built-in remote function

•Foldable for greater portability

Making calls

Multifunction button Operates various functions (receiving/ending calls, etc) when making calls.

VOLUME + Button	Microphone
VOLUME - Button

“Walkman®” or Portable Audio	Notebook equipped	Mobile phone with
with Bluetooth® functions	with Bluetooth® functions	Bluetooth® functions

Equipped with “24-bit D/A converter” which enables high quality playing that is more loyal to the original sound.

• Transmission by Bluetooth® and D/A conversion • D/A converter 16-bit vs 24-bit comparison image

Operation
using	Music	Phone
remote	Streaming	calls
controllers

Wireless	Wireless audio
headsets	receiver + headphones
	(sold separately)

Transmission side		Receiving side
		Machinery equipped
Machinery equipped
		with Bluetooth®
with Bluetooth®
(Mobile phone, etc).
	D (Digital)	A (Analog)
D (Digital)

While music data via Bluetooth® are transmitted digitally, it is necessary to convert digital signals to analogue signals in order for us to enjoy music that is played through headsets. This conversion of signals is

“D/A conversion”.

signals	24-bit resolution image
	16-bit* resolution image
music
	*Bluetooth® compatible
of	accessories other than
Size
	DR-BT50
	Time

Compared to 16-bit, 24-bit enables signal processing that is 256 times more accurate.

Transmit the music and audio from laptops equipped with Bluetooth® functions to wireless headsets or wireless audio receivers, and you can enjoy hands-free calls and*1 replay music. *2It is also possible to play and pause music using wireless headsets and wireless audio receivers.*3

*1 Mobile phones equipped with Bluetooth® functions need to be compatible with HFP or HSP. *2 Mobile phones equipped with Bluetooth® functions need to be compatible with A2DP.

*3 Mobile phones equipped with Bluetooth® functions need to be compatible with AVRCP.

About compatibility profile of Bluetooth® function	Profile is a functional standard for each characteristic of Bluetooth® product
A2DP (Advanced Audio Distribution Profile)	Transmit and receive high sound quality music contents
AVRCP (Audio Video Remote Control Profile)	Operates AV equipment such as play, pause, stop and volume control
HFP (Hands-free Profile)	Hands-free calls, operates mobile phones
HSP (Headset Profile)	Makes calls/operates mobile phones

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