The CMTSX7: Sony’s coolest sound system yet


By Paisal Chuenprasaeng
The Nation

The CMTSX7 is easily connected in to any array of devices for top-quality listening

Sony CMTSX7 is a multifunction Hi-Fi system with Wi-Fi and Bluetooth technology that has powerful and good-quality sounds and gives you networked speakers.

The SX7 is a CD player, FM tuner, DAB digital radio receiver, Bluetooth speaker system, Wi-Fi speaker system, USB music player, USB DAC speaker system for your computer, and a Chromecast speaker system with Chromecast built in.

Best of all, the SX7 supports High-Resolution Audio files that have about five times the detail of CD-quality music, so you can enjoy music just as the artists and producers intended.

The SX7 has powerful music with 50×2 watts of music output. It comes with two high-quality speakers, each 14.5×24.5×22.5cm, so the system can easily fill your living room with stereo music.

The SX7 is powered by an SMaster HX digital amplifier, which is 100-per-cent digital for more power without distortion, improving efficiency and reducing size.


The SMaster HX amp is also enhanced for High-Resolution Audio, so it reduces noise levels for the precision needed with high-frequency ranges (above 40kHz).

You can enjoy Hi-Res Audio files stored on a USB drive or by connecting the SX7 to your desktop or notebook computer, using a USB cable and a Sony Hi-Res player.

Or you can stream Hi-Res Audio from a music player to the SX7, which supports the LDAC codec. LDAC is audio technology from Sony that allows you to enjoy high-quality wireless audio via Bluetooth. With three times the data transmitted, LDAC provides an enhanced wireless listening experience for all your music.

Although you can’t play non-Hi-Res Audio files on the SX7, you can still enjoy the music with Sony’s Digital Sound Enhancement Engine HX (DSEE HX). The DSEE HX upscales your compressed digital music files (MP3, ACC, ATRAC and WMA) and takes it closer to the quality of High-Resolution Audio.

By restoring the high-range sound lost in the compression process, DSEE HX produces your digital music files in rich, natural sound, closer to the quality of the original recording. What makes using the SX7 more fun is its Wi-Fi and builtin Chromecast functions.



With Wi-Fi built in, the SX7 can be enjoyed in several wireless functions. It supports AirPlay, allowing you to play music stored on your Apple products, such as an iPad and Macbook computer, with ease.

And when the SX7 is used with Sony’s Music Center (formerly SongPal), the SX7 supports multiroom audio settings, meaning you can use your smartphone or tablet to group several SX7 units in separate rooms as your audio network.

You can then use the Music Center app to play the same songs or different songs to the SX7 or other speaker models that support this technology. You can also stream music from different music services, a PC or your DLNA network to these group speakers. You can set up your own music server, using either Apple’s iTune or Sony’s Media Go, and use the Music Center to play music from your server to the SX7.

With the builtin Chromecast, you can stream music, podcasts and Internet radio stations with over 100 audio apps to your phone or tablet to the SX7. The apps include Tunein Radio, Google Play Music, 7-digital Music and Deezer.


Using the Chromecast function has several benefits. It can save the battery of your phone or tablet because it makes a direct connection to the music streaming service. And using Chromecast, you can enjoy music while playing a game or taking a call and your game sounds or your conversation will not interfere with the music being played.

To link the SX7 to your home Wi-Fi router, there are three ways to do it. The easiest way is to use the remote to activate the WPS (Wi-Fi Protected Setup) and then press the WPS button of your router, and the Wi-Fi connection will be established. Once the Wi-Fi connection is done, you can enjoy the AirPlay function, Chromecast function, and DLNA music streaming and multiroom music function.

During the test, I enjoyed playing Hi-Res Audio format of FLAC 24bit/192kHz stored on a thumb drive. The music had clarity, good detail and powerful bass. Streaming Hi-Res Audio songs from Sony NWA25 Walkman, using LDAC Bluetooth connection also resulted in good-quality music.

I also used the Chromecast function by casting from Sony’s Music app on a Sony Xperia XZ Premium to the SX7 without any problem. The music sounded good. I tried streaming from an iPad and Macbook Pro using iTune and AirPlay. The music control was easy and the music quality sounded great as well.

I could also play music on my notebook computer using the Windows Media Player to stream the music to the SX7 and the sound quality was great.

The Sony CMTSX7 has a suggested retail price of Bt15,990.


– Speaker size: 14.5 x 24.5 x 22.5 cm
– Output: 100 watts
– Wireless connectivity: Wi-Fi, NFC, AirPlay, Chormecast builtin, Spotify connect
– Functions: USB, USB DAC, CD, tuner, input, output terminals: Analog Audio Input, Digital Audio Input, Ethernet Portm FM/AM Antenna, Headphone Output, Speaker Output(s) Front, USBA Port, USBB Port
– Dimensions: 22.5 x 11.5 x 26.3 cm – Weight: 2.7 kgs


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