Bluetooth

Bluetooth is a popular way to connect devices wireless. Mouse, keyboard and other peripherals, when connected wireless it is by Bluetooth.
In audio Bluetooth is often used to connect a player and a headset wireless.

Often this is done by plugging a Bluetooth dongle in the headphone out of the player.

In this case, the audio is converted from analogue to digital, send to the receiver and converted to analogue again. Not exactly an audiophiles paradise.

 

Best audio quality is obtained using the A2DP protocol. It support the following Codecs
MPEG-1,2 Audio
MPEG-2,4 AAC
ATRAC (Sony)
In essence high bit rate MP3 but vendors can implement their own protocols.

With a nominal bandwidth of 3 Mbit/s (2.1 + EDR) it is not really suit for high resolution audio.

 

 

Artora amp with up to 16 Bluetooth inputs.

 

If you want CD quality (16 bits/44.1 kHz) you might have a look at wireless headphones using kleer technology. Using lossless compression, they can transmit the audio using the same bandwidth as Bluetooth.

Sleek SA6 and Wireless W-1

SA6 can be used wired too