Monoprice 133831 Home Theater System
- Channels: 5.1.2
- Power: 300 watts
- Brand Tech: Monoprice
- Weight: 3 pounds
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
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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ASIN: B07K7XHM3SModel: 133831Category: Home Theater Systems
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.
Pros and cons
- 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 |
| Dimensions | 4.3 x 4.3 x 10.2 in |
| Power & efficiency | |
| Power | 300 watts |
| Construction & materials | |
| Color | Black |
| Compatibility & installation | |
| Connectivity | Aux |
| Other details | |
| Channels | 5.1.2 |
| Brand Tech | Monoprice |
Closest rivals on specs
Vizio SB36514-G6 Home Theater System- Power 300 vs 145 watts (+107%)
- Weight 3 vs 0.01 pounds (+29900%)
Rockville RHB70 Home Theater System- Power 300 vs 50 watts (+500%)
- Weight 3 vs 5.4 pounds (-44%)
Boytone BT-326F Home Theater System- Power 300 vs 40 watts (+650%)
- Weight 3 vs 10 pounds (-70%)
Frequently asked questions
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.