AudioControl SA-4140i Review: Specifications, Uses and Comparisons
Quick summary: the buying decision
The SA-4140i SPL turns an iOS device into a calibrated acoustic analyser that can also measure loud systems, up to 140 dB SPL, and it keeps the device charged during long tuning sessions.
AudioControl SA-4140i: what it is
The AudioControl SA-4140i SPL is a calibrated, full-range, omnidirectional test and measurement microphone that connects directly to iOS devices. With the AudioControl Mobile Tools app it turns an iPhone, iPod touch or iPad into a high-resolution acoustic analyser for setting up sound processors, and it handles up to 140 dB SPL.
It needs iOS 6.1 or later. A built-in audio output helps with iPhones that have no headphone jack, and a built-in charging jack with the included AC adapter keeps the device powered through long tuning sessions.
Key features
Calibrated, full-range omnidirectional measurement microphone
Increased maximum SPL handling: up to 140 dB SPL
Works with the AudioControl Mobile Tools app on iOS 6.1 or later
Built-in audio output, useful for iPhones without a headphone jack
Built-in charging jack and included AC adapter keep the iOS device charged during long sessions
Specifications explained
Maximum SPL 140 dB SPL, omnidirectional polar pattern, compatible with iPhone, iPod touch and iPad running iOS 6.1 or later using the AudioControl Mobile Tools app.
Full specifications as published by AudioControl:
Model: SA-4140i
Type: Calibrated iOS test and measurement microphone
Polar pattern: Omnidirectional
Maximum SPL: 140 dB SPL
Compatibility: iPhone, iPod touch and iPad running iOS 6.1 or later
App: AudioControl Mobile Tools
Audio output: Built-in
Charging: Built-in charging jack; AC adapter included
Connecting and using it
Check your iOS device's connector and iOS version against AudioControl's compatibility list before ordering, and install AudioControl Mobile Tools.
For in-car measurements, place the microphone at head height in the listening position, take several readings around the head position rather than one, and keep the doors and windows closed. Equalise broad trends rather than chasing narrow peaks and dips.
How it compares
Measurement microphones and analysers at VA3 Car Studio:
AudioControl CM-20: measurement microphone (back-electret condenser), ₹18,690
AudioControl C550H: precision measurement microphone (capacitive pressure transducer, prepolarised backplate), ₹93,490
AudioControl SA-4100i: calibrated iOS measurement microphone, ₹50,990
AudioControl DM-RTA: real-time analyser, oscilloscope and multi-test tool (analyser only), ₹1,44,490
Price and value in India
At the time of writing (October 2026), VA3 Car Studio lists the SA-4140i at ₹72,240, 15% below the MRP of ₹84,990. A calibrated microphone is the foundation of a reliable tune; the right choice depends on how often and how precisely you measure. Prices can change, so the product page always shows the current price.
Verdict: who should shortlist the SA-4140i
The SA-4140i suits iOS users who need high-SPL capability, up to 140 dB SPL, for measuring loud systems.
Real-world reviews and limitations
We have not yet published a VA3 installation report for the SA-4140i. The figures in this review are AudioControl's published specifications, not our own measurements, and real-world results depend on how the measurements are taken and the tune. If you have used one, we would welcome your feedback.
Frequently asked questions
How loud can the SA-4140i measure?
Up to 140 dB SPL.
Which app does the SA-4140i use?
AudioControl Mobile Tools on iOS 6.1 or later.
Does the SA-4140i keep my phone charged?
Yes. It has a built-in charging jack, and an AC adapter is included.
Is the SA-4140i calibrated?
Yes. It is a calibrated, full-range omnidirectional measurement microphone.
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