Comparison

A540DSP vs DC Power Cable Size Calc

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

Head to head
About

A540DSP

Control your car amplifier's audio settings, including EQ, bass, and time alignment, directly from your phone. Save and load custom sound profiles for a personalized listening experience.

Highlights
  • EQ control
  • Bass adjustment
  • Time alignment
  • Phase and mute settings
  • Filter control
  • Save sound settings to phone
  • Save sound settings to amplifier
  • Load sound settings from phone
Features
Read full description

After connecting App to Car Amplifier with Integrated DSP,  EQ, BASS,TIME ALIGNMENT, PHASE, MUTE, FILTER , SAVE SOUND SETTING TO PHONE, SAVE SOUND SETTING TO AMPLIFIER, LOAD SOUND SETTING FROM PHONE, RCA OUTPUT etc could be controlled through this App. How to use: 1.Install App and turn on power of car 2. Turn on Bluetooth on your iPhone 3,Open App and wait for around 5 seconds, then click “Connect” icon in left corner of bottom. Amplifier will be connected to App automatically. 4.DIY you preferred sound and then click “Save to AMP” icon to save. Or click “ Save to Phone” to save.   Note: 1.Do not exit app during saving and do not turn off power supply, program may be shut down caused by this.

About

DC Power Cable Size Calc

This utility calculates the appropriate wire gauge for DC power systems based on length, voltage, and current. It helps prevent voltage drops, overheating, and wasted energy by ensuring correct cable sizing for applications like solar panels and battery systems.

Highlights
  • Instant wire gauge calculation
  • Copyable results
  • Includes reference formulas
  • Supports various input units
  • Guideline for low voltage systems
Features
Read full description

DC Power Cable Size Calculator are electrical calculator to find approximate wire gauge/size based on the length of the wire, the voltage and the current (in amps). Features: - Instant calculation - Result are copy able to other app - Formula are include as reference - Support various unit for each input Cable sizes are important for low voltage battery cables, wind turbines, solar panels and load cables. Common reasons for low voltage (12v, 24v or 48v) system faults are voltage drops through incorrectly sized cables. It can be very dangerous If the cable is too small, as the cable will heat up and potentially cause a fire. On contrast an oversized cables might cause energy or money waste. Formula: VDI = (Amps x Distance)/(%Volt Drop x Voltage) VDI - Voltage Drop Index (a reference number based on resistance of wire) Distance - One way wiring distance in feet %Volt Drop = acceptable voltage drop Cable Size by cross-sectional area [Cooper] mm² = VDI x 1.1 The voltage drop value will vary depending on your application. The standard 2% are use to ensure delivering full potential to any needed electrical source. And 5% or more voltage drop is more common in automotive applications. Safety Guide: - Cable sizes should only be used as a guideline and all figures should be checked against the manufacturers data sheet. - Cables should be fused / current protected to their max rating or less. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

Screenshots

A540DSP4 screens
DC Power Cable Size Calc4 screens

Verdict

The call

The clearest difference is review sentiment: A540DSP at 50% against DC Power Cable Size Calc's 0%. A540DSP also leads on price (Free vs $2.99). DC Power Cable Size Calc's advantage is iOS requirement (12.0 vs 15.6). On update cadence, 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

A540DSP is free to download; DC Power Cable Size Calc costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

A540DSP ships an update every 47 months, DC Power Cable Size Calc every 43 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
A540DSP versus DC Power Cable Size Calc: the parameters behind the verdict, then further details
ParameterA540DSPDC Power Cable Size Calc
PriceFree — better$2.99
Rating—2.7 (3 ratings) — better
Positive reviews50.0% of reviews — better0.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 47 monthsEvery 43 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size26 MB9 MB
Age rating4+4+
Developer杏生 卢Nitrio

Customer experience

A540DSP

Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

DC Power Cable Size Calc

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

A540DSP

No in-app purchases

None

DC Power Cable Size Calc

No in-app purchases

Questions

Is A540DSP free?
A540DSP is free to download, with no in-app purchases.
Is DC Power Cable Size Calc free?
DC Power Cable Size Calc costs $2.99, with no in-app purchases.
Do A540DSP or DC Power Cable Size Calc have ads?
Neither A540DSP nor DC Power Cable Size Calc shows ads.
Which is updated more often, A540DSP or DC Power Cable Size Calc?
A540DSP ships an update every 47 months, and DC Power Cable Size Calc every 43 months. Most recently, A540DSP was updated on October 25, 2026 and DC Power Cable Size Calc on October 24, 2026.

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