The LG S77S is a 3.1.3 soundbar with a unique, rounded design compared to other models from the manufacturer. It has a traditional front-firing center channel in addition to an up-firing center channel, each designed to improve vocal quality in the mix. It supports Dolby Atmos content, though it lacks more premium features like room correction to optimize its sound based on your room's acoustics.
Our Verdict
The LG S77S soundbar is satisfactory for mixed usage. It's a 3.1.3 soundbar with LG's unique two center channel design, both of which are designed to improve vocal clarity in the mix. It supports lots of different audio formats, though it has to downmix surround sound into stereo to play it back. Dialogue is clearly reproduced, but the bar lacks the deep thump and rumble in the bass in comparison with more premium models.
- Bass and treble adjustments.
- Dolby Atmos support.
- Lacks low-bass.
- No graphic EQ.
The LG S77S is good for dialogue-centric TV shows and podcasts. This bar has a unique design with two center channels to improve vocal quality: one front-firing, and one up-firing. Its Clear Voice preset works to improve the clarity of dialogue in the mix. That said, it lacks a full graphic EQ to customize the bar's sound in the mids, so you don't have much control over its performance.
- Bass and treble adjustments.
- Dialogue enhancement tool.
- No graphic EQ.
The LG S77S soundbar is decent for music. Out-of-the-box, the bar's sound is fairly neutral, especially in the mids, where most voices and lead instruments are reproduced. You can customize its sound with its bass and treble adjustments, too. However, its sub struggles to reproduce an extended low-bass, so genres like EDM and hip-hop are lacking in thump and rumble.
- Bass and treble adjustments.
- Gets loud.
- Some compression at max volume.
- Lacks low-bass.
The LG S77S soundbar is decent for movies. The bar supports many audio formats commonly found on both streaming platforms and Blu-rays, like Dolby Digital and Dolby Atmos. However, it has to downmix 5.1 surround sound into stereo to play it back, which doesn't sound as clear or real. Plus, it struggles to replicate height with Dolby Atmos content, and it lacks the deep rumble in the bass to bring more intense scenes to life.
- Gets loud.
- Dolby Atmos support.
- Some compression at max volume.
- Lacks low-bass.
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Differences Between Sizes And Variants
The LG S77S 3.1.3 is available in Black. You can see the label for the model we tested here.
If you come across another version of this soundbar, let us know in the forums below.
Popular Soundbar Comparisons
The LG S77S is a 3.1.3 soundbar available at Costco. It has a more rounded design compared to other models from the manufacturer, like the LG S75Q. While it lacks more premium features like room correction, and it lacks some low-bass, it adds more video passthrough features in comparison with older LG soundbars.
You can also check out our recommendations for the best LG soundbars, the best soundbars for dialogue, and the best Dolby Atmos soundbars.
The LG SC9S is a better 3.1.3 soundbar than the LG S77S. The SC9S is a better-built bar with a better stereo soundstage. It reproduces more low bass. It also has a room correction feature, which the S77S lacks, and it supports more wireless playback options.
The LG S77S is a Costco-exclusive alternative to the LG S75Q. The S77S has a different design with more rounded edges that may appeal to some users over others. Its sound performance is pretty similar, though its soundstage isn't quite as good with stereo content. On the upside, the S77S adds more video passthrough support, including for 4k content at 120Hz.
The LG S95QR is a better soundbar than the LG S77S. The S95QR is a more premium model that comes with satellites, so it offers better surround sound. It has more sound enhancement features and wireless playback options. Plus, it offers better sound, with more low-bass and a better soundstage.
The LG S77S is a better alternative to the LG S65Q. The S77S supports Dolby Atmos content, unlike the S65Q, so you can take advantage of more content on streaming services and Blu-rays. It has a more rounded design, too, which some users may prefer. Plus, it supports more resolutions and refresh rates for high-quality video passthrough, which is handy for gamers.
Test Results
