Monoprice 133831 Home Theater System
- Home Theater System
- 300 watts
- Monoprice
- Aux
A budget 5.1.2 channel home theater system limited to Aux input, suited to a setup where a receiver or source already handles HDMI switching.
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How it ranks among the 28 home theater systems we track
4.2★ across 84 Amazon ratings, Bayesian-smoothed toward the category average.
84 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Modest tracked demand last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 28 home theater systems we track - how the scorecard works · full home theater systems data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The Monoprice 133831 is a home theater system specified at 5.1.2 channels with 300 watts of total power, connecting through an Aux input. It comes in black.
A 5.1.2 channel layout adds two height channels on top of a standard 5.1 setup, matching object based surround formats. Aux is the only listed connection method here, so this system depends on a wired analog input rather than HDMI or wireless streaming.
- 5.1.2 channel configuration
- 300 watts total power
- Aux input connectivity
- Black finish
Who it's for
Fits a shopper building a 5.1.2 speaker layout on a budget who is fine feeding the system through an Aux input rather than HDMI. Not a fit for anyone who needs HDMI ARC or wireless connectivity built into the system itself.
Strengths and trade-offs
Drawn from this product's published specifications.
- 5.1.2 channel layout with height channels
- 300 watt combined power
- Aux input only, no HDMI or wireless
- Needs a separate receiver for source switching
Performance notes
The 5.1.2 arrangement is designed to add overhead height channels to a standard surround layout, drawing on 300 watts of combined power across the set. Because Aux is the only connection listed, source switching and any HDMI handling has to happen upstream in a separate receiver.
Specifications
| Brand | Monoprice |
|---|---|
| Model | 133831 |
| Dimensions & fit | |
| Weight | 3 pounds |
| Dimensions | 4.3 × 4.3 × 10.2 inches |
| Power & efficiency | |
| Power | 300 watts |
| Construction & materials | |
| Color | Black |
| Compatibility & installation | |
| Connectivity | Aux |
| Other details | |
| Brand Tech | Monoprice |
| Channels | 5.1.2 |
Other Monoprice home theater systems
How it compares
This product against the closest alternatives we track in home theater systems.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Monoprice 133831 Home Theater SystemThis product | 4.2 / 5 | 84 | 3.4 / 5 |
| Saiyin Sound bar DS6345S Home Theater SystemSaiyin | 4.4 / 5 | 3,800 | 3.8 / 5 |
| Rockville HTS56 Home Theater SystemRockville | 4.2 / 5 | 6,400 | 3.8 / 5 |
| Klipsch R-625-FA Home Theater SystemKlipsch | 4.6 / 5 | 574 | 3.8 / 5 |
| Boytone BT-326F Home Theater SystemBoytone | 4.3 / 5 | 827 | 3.6 / 5 |
Similar home theater systems from other brands
Questions about the Monoprice 133831
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What channel configuration does the Monoprice 133831 use?
5.1.2, which includes two height channels for overhead sound.
How does the system connect to a source?
Through an Aux input.
What is the power rating?
300 watts.