JBL Bar 2.1 Deep Bass MK2 vs Polk Audio Signa S4D
Prices updated hourly. Check retailer for current availability.
Choosing between the JBL Bar 2.1 Deep Bass MK2 and Polk Audio Signa S4D? Both compete in the Soundbar segment. Here’s how they compare across the specs that matter most for your home theater.
Pricing for both models is currently unavailable. Check the retailer links below for current deals.
Looking at overall performance dimensions: The JBL Bar 2.1 Deep Bass MK2 scores higher in value, form factor, room fit. They score similarly in ease of use.
These soundbars differ in channel configurations of 2.1 vs 3.1.2, and only the Polk Audio Signa S4D includes Dolby Atmos support. Atmos adds a height dimension to surround sound, placing sounds above you. It's object-based, so the receiver decides which speakers reproduce each sound based on your layout.
The JBL Bar 2.1 Deep Bass MK2 holds an advantage across more performance dimensions, but the Polk Audio Signa S4D may still be the better pick depending on which specs matter most to your setup. See the detailed comparison table below for the full breakdown.
For most home theaters, the JBL Bar 2.1 Deep Bass MK2 is the stronger choice — it leads in 3 of 4 scored dimensions. The Polk Audio Signa S4D makes more sense if budget is the primary constraint.
Performance Overview
Scores based on specs and category benchmarks (0–100 scale)
JBL Bar 2.1 Deep Bass MK2
Polk Audio Signa S4D
Detailed Specifications
| Specification | ||
|---|---|---|
| Price | N/A | N/A |
| Channel Config | 2.1 | 3.1.2 |
| Total Power (RMS) | 300W | — |
| Driver Count | 6 | 7 |
| Freq Response Low | 50Hz | — |
| Freq Response High | 20000Hz | — |
| Passive | No | No |
| Dolby Atmos | No | Yes |
| Dolby Digital+ | Yes | Yes |
| Dolby TrueHD | No | No |
| DTS:X | No | No |
| DTS Virtual:X | No | No |
| DTS-HD Master | No | No |
| Built-in Sub | No | No |
| Wireless Sub Included | Yes | Yes |
| Wireless Sub Support | No | Yes |
| Wireless Surround Support | No | No |
| HDMI eARC | Yes | Yes |
| HDMI Inputs | 0 | 0 |
| HDMI Version | — | 2.1 |
| Optical Input | Yes | Yes |
| Analog Stereo In | No | No |
| Sub Pre-Out | No | No |
| Ethernet | No | No |
| Bluetooth | Yes | Yes |
| BT Version | 5.0 | 5.0 |
| Wi-Fi | No | No |
| Wi-Fi Standard | — | — |
| AirPlay 2 | No | No |
| Chromecast | No | No |
| Spotify Connect | No | No |
| Voice Assistants | ||
| Room Calibration | — | VoiceAdjust |
| Dialog Enhancement | No | Yes |
| Night Mode | No | Yes |
| App Control | — | Polk Audio |
| Wall Mountable | Yes | Yes |
Key Differences
- Channel Config: JBL Bar 2.1 Deep Bass MK2 at 2.1 vs Polk Audio Signa S4D at 3.1.2
- Driver Count: JBL Bar 2.1 Deep Bass MK2 at 6 vs Polk Audio Signa S4D at 7
- Total Power (RMS): JBL Bar 2.1 Deep Bass MK2 at 300W vs Polk Audio Signa S4D at —
- Freq Response Low: JBL Bar 2.1 Deep Bass MK2 at 50Hz vs Polk Audio Signa S4D at —. Determines how much bass a speaker handles on its own versus relying on a subwoofer for low-end support.
- Freq Response High: JBL Bar 2.1 Deep Bass MK2 at 20000Hz vs Polk Audio Signa S4D at —
Specifications sourced from manufacturer datasheets and verified against retailer listings. Prices updated hourly from authorized retailers. Scoring uses our open methodology — products are never ranked, promoted, or suppressed based on affiliate commission rates.
Related Comparisons
CinemaConfig may receive compensation for purchases made at participating retailers linked on this site. This compensation does not affect what products or prices are displayed, or the order of prices listed. See our affiliate disclosure.