AX vs SixTen DSP Bluetooth Control
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AX
Enhance your car's audio system with this digital signal processor. It offers an all-in-one solution for various audio setups, allowing for improved sound quality and subwoofer integration while preserving factory features. Control settings easily via a smartphone app.
- Digital Signal Processor
- Subwoofer integration
- Preserves OE features
- Bluetooth smartphone control
- Vehicle-specific T-Harnesses (sold separately)
- All-in-one solution
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Axxess, a leader in vehicle interfacing, has once again set the industry standard by developing a cost effective option for customers desiring to improve vehicle sound quality with a Digital Signal Processor. The AX-DSP-XL presents an all-in-one solution for a variety of car audio system setups, from fixed level output (digital) to analog OE systems, and even adding a subwoofer to an OE system. Our before the amp solution is designed to allow the installers the option to remove the factory amplifier or to add a subwoofer all while maintaining the OE features and controls of the radio. Whether you have a Digital or Analog factory amplifier system, the AX-DSP-XL has you covered. Unlike other digital signal processors on the market, the AX-DSP-XL includes a built-in Axxess Interface. More reasons installers will love the new Axxess DSP is for its quick and simple installation behind the factory radio, due to its small footprint. Features and settings are easily controlled via Bluetooth from our free Smartphone application. To further cut down on install time, Axxess has engineered vehicle specific T-Harnesses (sold separately), that make installation even faster and easier, with no need to cut any wires. The Axxess Digital Signal Processor provides a smart and cost efficient way to provide improved sound quality that customers want when upgrading their vehicle sound systems.
SixTen DSP Bluetooth Control
Fine-tune your car audio system with advanced sound customization via Bluetooth. Adjust crossovers, EQ, gain, and more for a perfect listening experience.
- Precision Crossover Adjustments
- 31-Band Parametric EQ
- Gain Control
- Limiters & Delays
- Polarity & Phase Control
- Independent Left/Right Routing
- Real-Time Monitoring
- Save & Recall Presets
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Unlock the Full Potential of Your B2 Audio SixTen DSP! The B2 Audio DSP App is your ultimate tool for fine-tuning and optimizing your car audio system with seamless Bluetooth control. Whether you're an audiophile or a competition-level enthusiast, this app gives you real-time access to advanced sound customization features, allowing you to dial in the perfect audio experience. Key Features: - Precision Crossover Adjustments – Customize frequency cutoffs for enhanced clarity and balance. - 31-Band Parametric EQ – Fine-tune every detail of your sound to perfection. - Gain Control – Optimize output levels for peak performance. - Limiters & Delays – Prevent distortion and sync audio timing with precision. - Polarity & Phase Control – Achieve the perfect phase alignment for superior sound staging. - Independent Left/Right Routing – Configure channels exactly how you need them. - Real-Time Monitoring – Make live adjustments and see results instantly. - Save & Recall Presets – Store up to six custom profiles for different setups. With the B2 Audio DSP App, you can control every aspect of your sound system directly from your phone, ensuring a powerful, distortion-free, and fully customized listening experience—anytime, anywhere. Download now and take your car audio to the next level!
Screenshots
Verdict
The clearest difference is update cadence: AX at every 2 months against SixTen DSP Bluetooth Control's every 9 months. AX also leads on iOS requirement (12.1 vs 15.0). SixTen DSP Bluetooth Control's advantage is review sentiment (11% vs 0%) and ratings volume (18 vs 5). On price, rating, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SixTen DSP Bluetooth Control holds the better App Store score, 2.4 against 2.2. Both are backed by a comparable volume of ratings — 5 and 18 respectively. Written reviews point the same way: 0% of AX's written reviews are positive against 11% of SixTen DSP Bluetooth Control's.
AX ships an update every 2 months, SixTen DSP Bluetooth Control every 9 months. The most recent releases landed on October 3, 2026 and October 21, 2026 respectively.
| Parameter | AX | SixTen DSP Bluetooth Control |
|---|---|---|
| Price | Free | Free |
| Rating | 2.2 (5 ratings) | 2.4 (18 ratings) — better |
| Positive reviews | 0.0% of reviews | 11.1% of reviews — better |
| Number of ratings | 5 | 18 — better |
| Update frequency | Every 2 months — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 10 MB | 63 MB |
| Age rating | 4+ | 4+ |
| Developer | Metra Electronics Corp. | B2 AUDIO |
Customer experience
AX
SixTen DSP Bluetooth Control
In-app purchases
AX
No in-app purchases
SixTen DSP Bluetooth Control
No in-app purchases
Questions
Is AX free?
Is SixTen DSP Bluetooth Control free?
Which has better reviews, AX or SixTen DSP Bluetooth Control?
Do AX or SixTen DSP Bluetooth Control have ads?
Which is updated more often, AX or SixTen DSP Bluetooth Control?
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