
5GB
The BLUETOOTH® word mark and logos 
are owned by the Bluetooth SIG, Inc. and 
any use of such marks by Sony 
Corporation is under license. Other 
trademarks and trade names are those of 
their respective owners.
The N-Mark is a trademark or registered 
trademark of NFC Forum, Inc. in the 
United States and in other countries.
Google Play and Android are trademarks 
of Google Inc.
Google Cast™ and the Google Cast Badge 
are trademarks of Google Inc.
“Xperia” and “Xperia Tablet” are 
trademarks of Sony Mobile 
Communications AB.
WALKMAN® and WALKMAN® logo are 
registered trademarks of Sony 
Corporation.
LDAC™ and LDAC logo are trademarks of 
Sony Corporation.
DLNA™, the DLNA Logo and DLNA 
CERTIFIED™ are trademarks, service 
marks, or certification marks of the Digital 
Living Network Alliance.
AOSS is a trademark of BUFFALO INC.
This product incorporates Spotify 
software which is subject to 3rd party 
licenses found here:
https://developer.spotify.com/esdk-
third-party-licenses/
Spotify and Spotify logos are trademarks 
of the Spotify Group.
The system names and product names 
indicated in this manual are generally the 
trademarks or registered trademarks of 
the manufacturer.
™ and ® marks are omitted in this manual.
Notes on the License
This product contains software that Sony uses 
under a licensing agreement with the owner of 
its copyright. We are obligated to announce the 
contents of the agreement to customers under 
requirement by the owner of copyright for the 
software.
Please access the following URL and read the 
contents of the license.
http://rd1.sony.net/help/speaker/sl/15/
Notice on GNU GPL/LGPL applied 
software
This product contains software that is subject to 
the following GNU General Public License 
(hereinafter referred to as “GPL”) or GNU Lesser 
General Public License (hereinafter referred to 
as “LGPL”). These establish that customers have 
the right to acquire, modify, and redistribute the 
source code of said software in accordance with 
the terms of the GPL or LGPL supplied. The 
source code for the above-listed software is 
available on the Web.
To download, please access the following URL 
then select the model name “SRS-X77”.
URL: http://oss.sony.net/Products/Linux/
Please note that Sony cannot answer or respond 
to any inquiries regarding the content of the 
source code.
Notes on the update
If you use this unit while connected to the 
Internet via a wired or Wi-Fi network, the unit 
can update to the latest software automatically.
By updating the software, new features will be 
added enabling you to experience more 
convenient and stable use.
If you do not want to automatically update the 
software, you can disable this function by using 
the SongPal installed on your smartphone/
iPhone.
However, the software may be updated 
automatically for stable use, etc., even if you 
disable this function. Also, if you disable this 
function, you can still update the software 
manually.
For details about how to set and operate, refer 
to the Help Guide.
The unit may not be operational while updating.
Disclaimer regarding services 
offered by third parties
Services offered by third parties may be
changed, suspended, or terminated without 
prior notice. Sony does not bear any 
responsibility in these sorts of situations.