Comparison

Dual Smart EQ vs Sound Amplifier +

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

Head to head
About

Dual Smart EQ

Control your car's audio system with this app. Adjust volume, balance, and EQ settings, or stream music via Bluetooth. It offers presets and custom user settings for a personalized sound experience.

Highlights
  • Bluetooth audio streaming
  • 7-band EQ with presets
  • Custom user settings
  • Volume, balance, and fade control
  • Source selection
Features
Read full description

The Dual Smart EQ app gives you full control of the Bluetooth Smart EQ Processors from Axxera and Dual. The app works with models ASEQ505BT & BEQ25T from Axxera and models DSEQ505BT & MEQ15BT from Dual giving you complete control over your sound. The Smart EQ Processor allows you to control volume (main and sub), balance/fade and 7 EQ bands, as well as giving you presets including pop, rock, and jazz. The Processor features signal sensing for automatic amplifier turn-on plus speaker and RCA inputs, and supports Bluetooth audio streaming profile (A2DP). Visit dualav.com or axxeraaudio.com for more product information. The Dual Smart EQ App features: - Source selection for headunit or Bluetooth streaming - 7-band EQ using slide bars for each frequency - EQ Presets Pop, Rock, Jazz, Classical, Acoustic, Vocal, etc. - Up to 3 custom user settings - Main volume and subwoofer volume control - Balance/fade sound positioning Requirements: - Compatible with iPhone and iPod touch - Requires iOS 5.1 or later - For use ONLY with the Smart EQ Processor models DSEQ505BT, ASEQ505BT, MEQ15BT and BEQ25BT from Dual Electronics.

About

Sound Amplifier +

Enhance your hearing in everyday situations. This tool uses your phone's microphone to amplify nearby sounds and deliver them to your earphones in real time. Adjust sound with an equalizer, reduce background noise, and protect your hearing with a volume limiter.

Highlights
  • Live audio amplification
  • 3-band equalizer with presets
  • Speech boost and noise reduction
  • Left/right balance control
  • Safe-volume limiter
  • Offline functionality
Features
Read full description

Sound Amplifier picks up the voices and sounds around you with your phone's microphone and plays them into your earphones in real time — so a soft-spoken friend, the TV across the room or a lecture from the back row comes through more clearly. Missed what someone just said? Tap Replay last 10s to hear the last 10 seconds again. Want the sound shaped for your own ears? Take the short Hearing Test and a personal EQ is built from your answers. Please note: Sound Amplifier is an everyday assistive listening tool. It is not a medical hearing aid and it does not diagnose hearing loss. LISTEN • Live amplification from 0 to +40 dB, with a live level meter • Replay the last 10 seconds — kept in memory only and cleared when you stop • Voice leveller that evens out loud and soft voices automatically • Noise reduction that cuts low rumble from air conditioning, traffic and wind TUNE • 3-band equalizer: bass, mid and treble, each ±12 dB • Presets for Speech, Music, Outdoor and Flat • A Personal preset created from your Hearing Test • Left/right balance for when one ear needs more HEARING TEST • Soft tones at 250, 500, 1,000, 2,000, 4,000 and 6,000 Hz, one ear at a time • Turn the result into a personal EQ with one tap • Hearing over time: compare later tests with your first one (changes under 10 dB are shown as no change) • Earphones or headphones are required, because each ear is tested separately MY SETUPS • Save up to 8 named setups — TV, restaurant, lecture — and bring one back with a tap SAFETY • A safety limiter caps loud peaks at a level you choose (-18 to 0 dBFS) • The app will not amplify through the phone's own speaker, where the microphone would pick the sound up again and howl • If your earphones disconnect, amplifying stops and a card explains why; reconnect them and tap Resume GOOD FOR • TV dialogue without turning the room volume up for everyone • Conversations in cafés, restaurants and family dinners • Lectures, sermons, meetings and guided tours • Birdsong and quiet sounds on a walk Tips: start with low amplification and raise it slowly. Wired earphones have the shortest delay; Bluetooth earphones work too but add a little lag. If you are worried about your hearing, please talk to a hearing professional.

Screenshots

Dual Smart EQ2 screens
Sound Amplifier +3 screens

Verdict

The call

The clearest difference is rating: Sound Amplifier + at 3.8 against Dual Smart EQ's 2.0. Sound Amplifier + also leads on update cadence (every 4 days vs every 11 months). Dual Smart EQ's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, review sentiment, ratings volume 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

Sound Amplifier + holds the better App Store score, 3.8 against 2.0. Both are backed by a comparable volume of ratings — 21 and 15 respectively. Written reviews complicate that: 7% of Dual Smart EQ's written reviews are positive against 0% of Sound Amplifier +'s, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Dual Smart EQ ships an update every 11 months, Sound Amplifier + every 4 days. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
Dual Smart EQ versus Sound Amplifier +: the parameters behind the verdict, then further details
ParameterDual Smart EQSound Amplifier +
PriceFreeFree
Rating2.0 (21 ratings)3.8 (15 ratings) — better
Positive reviews7.1% of reviews — better0.0% of reviews
Number of ratings21 — better15
Update frequencyEvery 11 monthsEvery 4 days — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPod — betteriPhone
Requires iOS8.0 — better16.4
Further details — not scored
Size9 MB61 MB
Age rating4+17+
DeveloperNAMSUNG AMERICA, INC.heekyung moon

Customer experience

Dual Smart EQ

All ratings21 ratings
Positive19.0%
Neutral9.5%
Negative71.4%
Written reviews14 reviews
Positive7.1%
Neutral7.1%
Negative85.7%

Sound Amplifier +

All ratings15 ratings
Positive66.7%
Neutral13.3%
Negative20.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Dual Smart EQ

No in-app purchases

None

Sound Amplifier +

No in-app purchases

Questions

Is Dual Smart EQ free?
Dual Smart EQ is free to download, with no in-app purchases.
Is Sound Amplifier + free?
Sound Amplifier + is free to download, with no in-app purchases.
Which has better reviews, Dual Smart EQ or Sound Amplifier +?
Sound Amplifier + is rated higher. Dual Smart EQ averages 2.0 out of 5 from 21 ratings, while Sound Amplifier + averages 3.8 from 15 ratings.
Do Dual Smart EQ or Sound Amplifier + have ads?
Sound Amplifier + shows ads; Dual Smart EQ does not.
Which is updated more often, Dual Smart EQ or Sound Amplifier +?
Dual Smart EQ ships an update every 11 months, and Sound Amplifier + every 4 days. Most recently, Dual Smart EQ was updated on October 22, 2026 and Sound Amplifier + on October 24, 2026.

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