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AudioControl SA4100i Calibration Microphone An extremely convenient and very accurate calibrated measurement microphone. Omnidirectional microphone works with your iOS device to test and measure your system's performance. This microphone works directly with the SoundTools app connecting directly to your IPhone. I love using this microphone for on the fly measurements, testing, calibration and a lot more. It's a very powerful tool with great features in the dedicated SoundTools app. The microphone is able to display Real Time Analysis (RTA), SPL Meter, Polarity Checking and many more features.
Compared with the obvious alternative at this money — a generic used car-A/V amp or a budget DSP add-on — A$200 is a good buy if this is the SA-4100i in working order. It sits around the lower end of the used market I can verify, with new-retail references landing far higher, so this is more fair-to-strong than ambitious.
What makes it worth grabbing is the AudioControl name and the SA series’ reputation for solid install-grade performance and useful tuning flexibility in a compact package. If the listing includes the proper harness, plugs, and the amp powers up cleanly, that’s the key upside here; at this price, a tidy, complete example is the sort of thing fellow enthusiasts can buy without overthinking it.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Founded in 1977 in the Pacific Northwest outside Seattle, USA, AudioControl emerged during the Golden Age of Hi-Fi, when professional music engineers sought to bridge the gap between studio mastering tools and home listening. Conceived to help enthusiasts overcome room acoustics and recapture the intended sonic fidelity of recordings, the company has maintained its manufacturing base there for nearly five decades, fostering a culture of relentless innovation and craftsmanship.
AudioControl specializes in high-performance amplifiers, signal processors, receivers, and preamplifiers designed for demanding applications. Iconic products like the Epicenter bass processor highlight their expertise, alongside multi-zone amps, home cinema solutions, and distributed audio gear tailored for whole-home, outdoor, and commercial setups. These components excel in transforming standard audio into immersive, concert-like experiences, with a legacy in equalizers and processors born from the vinyl and cassette era.
Positioned as a mid-to-high-tier leader in custom integration and professional AV, AudioControl commands strong market share—ranking No. 5 in home theater processors and No. 6 in amplifiers per 2021 analysis—prioritizing reliability for installers over mass-market consumer gear. Award-winning and patent-backed, it appeals to discerning buyers valuing pro-grade performance in residential and commercial environments, backed by a network of specialty dealers worldwide.
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