If you want CD quality (16 bits/44.1 kHz) wireless, you might have a look at systems using KLEERNET technology. Using lossless compression, it can transmit the audio lossless using the same bandwidth as Bluetooth.
The original KLEER Company manufactured a headphone using this technology.
Today it is part of SMSC.
Sleek SA6 and Wireless W-1
SA6 can be used wired too
Sennheiser MX W1
Arcam rDac-kw
Arcam rWave USB dongle with KLEER wireless technology
The new modules (DARR83) supports up to 24/96.