# Mobile Microphone Add-Ons The Fostex AR-4i Audio Interface Captures Quality Sound for iPhone By Amelia Roblin | Published 2011-08-31 | Tech Source: Trend Hunter, https://www.trendhunter.com/trends/fostex-ar-4i References: [gizmag](http://www.gizmag.com/fostex-ar-4i-audio-interface-for-iphone-4/19651/) & [fostexinternational](http://www.fostexinternational.com/docs/products/AR-4i.shtml) It's difficult for the average person to justify purchasing a professional grade camcorder when the [iPhone 4](https://www.trendhunter.com/trends/iphone-4-concept) does a decent job of recording HD video, so the simple acquisition of the Fostex AR-4i audio interface is all one really requires to accurately capture an important event. The system is essentially an iPhone dock and case that feeds off of AAA batteries for a 10-hour life that won't drain your handset. The unit includes three separate jacks for the attachment of [swiveling microphones](https://www.trendhunter.com/trends/solum-voice-s), allowing the user to position them to preference depending on the direction of the sound and the orientation of the device. The hi-tech [mobile phone accessory](https://www.trendhunter.com/trends/beastcage-16) can be fixed to a tripod on two sides and a Fostex AR-4i app will allow the videographer to control the sound input. ## Trend Insights (Trend Hunter) - Score: 3.7/10 - Popularity: 41% | Activity: 61% | Freshness: 8% - Audience gender: 50% men, 50% women - Primary generations: Millennial - Top markets: North America, Europe, Asia ## Categories [Trend Hunter](https://www.trendhunter.com/trends) > [Tech](https://www.trendhunter.com/tech) > [Gadgets](https://www.trendhunter.com/gadgets) ## Key Themes ### What Makes This Trend Stand Out - **Mobile Audio Accessories:** As smartphone cameras improve, there is an increasing demand for high-quality audio accessories to match their capabilities. - **Smartphone Filmmaking:** The rise of mobile filmmaking has created a need for accessories that enhance the quality of smartphone video production. - **Modular Microphone Systems:** Swappable and modular microphone systems for smartphones offer a cost-effective alternative to traditional audio recording equipment. ### Sectors Adopting This - **Consumer Electronics:** As smartphones become more capable, there is a growing market for audio accessories that can improve the user experience. - **E-commerce:** Online retailers can capitalize on the need for audio accessories by providing a wide range of products that cater to different user needs. - **Content Creation:** The rise of mobile video and audio content creation has created an opportunity for businesses to provide products and services that enhance the user experience. ## Related on Trend Hunter - [Simplified Smartphone External Microphones](https://www.trendhunter.com/trends/rode-videomic-go-ii.md) - [Vlog-Focused Microphones](https://www.trendhunter.com/trends/dji-mic.md) - [Content Creator-Focused Microphones](https://www.trendhunter.com/trends/mobile-content-creators.md) - [Mini Wearable Smartphone Microphones](https://www.trendhunter.com/trends/dji-mic-mini.md) - [Stylish Portable Microphones](https://www.trendhunter.com/trends/saramonic-air.md) - [All-in-One Mobile Recording Devices](https://www.trendhunter.com/trends/hisong-airstudio-s1.md) - [Aftermarket Vlogger Microphones](https://www.trendhunter.com/trends/sony-shotgun-microphone-ecmg1.md) - [Lightweight Wireless Microphones](https://www.trendhunter.com/trends/mic-3.md) - [Snap-On Smartphone Recorders](https://www.trendhunter.com/trends/magmo-pro.md)