Comparison

AX vs DSP sound master

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Digital Signal Processor
  • Subwoofer integration
  • Preserves OE features
  • Bluetooth smartphone control
  • Vehicle-specific T-Harnesses (sold separately)
  • All-in-one solution
Features
Read full description

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.

About

DSP sound master

Read full description

This application use bluetooth communication to control Car DSP player and tune sound setting.

Screenshots

AX3 screens
DSP sound master2 screens

Verdict

The call

The clearest difference is update cadence: AX at every 2 months against DSP sound master's every 9 months. On price, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

AX ships an update every 2 months, DSP sound master every 9 months. The most recent releases landed on September 7, 2026 and April 22, 2026 respectively.

Scorecard1 real difference · 9 level
AX versus DSP sound master: the parameters behind the verdict, then further details
ParameterAXDSP sound master
PriceFreeFree
Rating2.2 (5 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 2 months — betterEvery 9 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.1 — better13.0
Further details — not scored
Size10 MB24 MB
Age rating4+4+
DeveloperMetra Electronics Corp.师贤 陈

In-app purchases

None

AX

No in-app purchases

None

DSP sound master

No in-app purchases

Questions

Is AX free?
AX is free to download, with no in-app purchases.
Is DSP sound master free?
DSP sound master is free to download, with no in-app purchases.
Do AX or DSP sound master have ads?
Neither AX nor DSP sound master shows ads.
Which is updated more often, AX or DSP sound master?
AX ships an update every 2 months, and DSP sound master every 9 months. Most recently, AX was updated on September 7, 2026 and DSP sound master on April 22, 2026.

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