Wireless speakers and sound systems have become a mandatory part of household today. Many of the users prefer having smart, wall-installed or tabletop speakers which are much more convenient than the traditional sound systems in terms of their ease and handy use.

The tech brands in today’s time are busy creating smart sound systems and speakers which can win the hearts of the potential customers.

Many of the speakers which are present in the market today are known for their smart sound quality, pacing with the corresponding smart technology and altering the traditional concept of sound and its quality.

The newly developed speakers are much more efficient than the earlier ones immersed with modern technology from head to toe.

Vizio is credited to be the finest sound system which is altering the traditional concept of sound quality replacing it with the modern innovative ideas and smart technology with portability.

Two of its models include VIZIO SB3621n-E8 and VIZIO SB3821-C6 which come in close competition with each other. Both of them share the sibling rivalry on the basis of their mutually contrasting yet interesting features.

Here is a detailed comparison in between both of these giants which draws a borderline in between both of them.

Bluetooth connectivity.
Excellent bass.
Brilliant equalizer.
LED indicator.
LED indicator.
Active noise-cancellation.
Smart design.
Dolby Digital Studio effects.
Connectivity issues.
Connectivity issues.
LED blink.


Both of them have the same origin. They both are contrasting models from the same parent Vizio, so there’s not any prominent distinction between both in terms of the basic design. The color theme is pretty same within both and both share the jet black characteristic color which appears sophisticated.

In terms of weight, Vizio SB3821-C6 takes the game in its hands weighing up to 5.8lbs whereas, the contender is medium weighted carrying a weight of 4.6lbs. Hence, the title of being the light weight one goes in the hands of Vizio SB3621n-E8.

The sound systems are specifically designed by keeping in view the portability feature. Because, here you find out both of the soundbars standing alone on their own, or either they are wall mounted. This feature adds to the efficiency of the design because both of them upon first look appear as an ordinary bar placed at one corner of a room which is a very minimalistic approach towards the development, unlike the traditional full fledged sound systems with nothing else but wait. There’s no use of any sort of satellite speakers in the presence of these little beasts.


The most interesting feature about both of them is their Bluetooth connectivity feature. These soundbars provide you flawless sounds using the Bluetooth connectivity with any other device. Hence, you can simply connect the system with any of your smart devices any time anywhere to get a realistic theatrical effect.

In terms of the maximum frequency response rate, VIZIO SB3621n-E8 is the king of the game, taking the sound quality to a next level with a frequency rate of 20kHz, which is a bit more than its rival bearing a frequency rate of 19kHz. Both of them have the same number of channels setting at some 2.1 value.

In terms of the studio sound, both the soundbars provide access to Dolby Digital, DTS Studio Sound, DTS TruSurround and DTS TruVolume. This in other words means that you can easily get the movie-like sounds over here on these sound systems.

However, both of these sound bars work differently according to the desired type of sounds. Both of them are provided by an LED indicator which indicates the basis play/pause and mute controls.


VIZIO SB3621n-E8 is highly efficient in terms of providing dramatic effect whereas VIZIO SB3821-C6 you get amazing bass and treble settings to light up your music from the core.

The bass equalizer in both of the devices is very impressive. VIZIO SB3621n-E8 is more effective in terms of background noise cancellation effect where you just get the sounds, which you desire to hear and the rest of the extra noise is cancelled out.

Both of the soundbars use varying interfaces for their functioning. Analog audio is used up by VIZIO SB3621n-E8 whereas VIZIO SB 3821 uses stereo RCA for its functioning.

The sound quality though varies accordingly but what is fascinating within both of the models is the crystal-clarity of the sounds. The subwoofers within the sound bars heighten up the overall sound impact.


Both of the systems work on the plug and play basis. Both are supported by USB type-c power cables which are simultaneously used up within the set up and usage.

However, in order to control the channel configuration and functioning, you are required to replace the batteries after every two month on average. VIZIO itself recommends the DURACELL battery, however you can use any other too.


VIZIO SB3621n-E8 is more expensive than its counterpart because of better studio sound effects. The price is set as high as $140 and then varies according to the demographics. However, VIZIO SB3821-C6 comes in the affordable range starting at $120.


Much of the features are common within both of the soundbars. But, if one has to pick one out of both, it is surely going to be VIZIO SB3621n-E8 because of its brilliant bass manager, the sub-woofer, connectivity ease and movie-like sound impacts. These features are the reason it stands out as the most amazing one out of both.