Audio-3D Player Headphones HD 7.1 (free today only) is a long name for an app that can make a big difference in the sound of headphones playing music on your iPhone.

The app is designed to make music sound like you are listening in a room, not through headphones. There are two modes to choose from: one for a 2.1 system (2 speakers plus subwoofer), and another for a 7.1 home cinema system. In the 7.1 mode, you can choose from normal, dynamic, and spectacle. Each succeeding mode enhances separation.

The app is tweaked for certain headphones, including the Beats by Dr. Dre, the Bose OE2, iPhone 5 Earplugs, the Koss Porta Pro 2, and the Sennheiser HD 238, HD 650, Momentum, the PX 200 II and the PX 90. There are more brands and models matched to the app, and you can check them out on the developer website.

I tried the app on my Sennheiser 650s, and music sounded really good, especially in the 7.1 mode. I couldn’t hear sounds from directly behind me, but the rear surrounds were certainly behind the front and side surrounds. For classical music, rock and jazz I thought the Audio-3D player made the sound more dramatic and ‘live’ sounding.

The 2.1 channel mode sounded much less full, but the app has adjustments that let you set the distance of the instruments, and you can change the apparent direction of the sounds. The app also features a bass boost option.

I tried the app on some phones not on the recommended list, and they sounded excellent as well. For example, my B&W P5 headphones came alive and I preferred listening through the Audio-3D player. The developer is taking suggestions to integrate headphones not on the approved list.

When you first start up, the app will ask for access to your music, and you’ll get complete control, including album covers if you have them in your iTunes library. There is also a terrific sounding test track, and you can select individual virtual speakers to hear directionality.

Audio-3D Player sounds good and for now the price is right. Apps that perform a similar function include the Dirac HD player, and from SRS Labs, My Tunes Pro.

Audio-3D Player 7.1 requires iOS 5.0 or later and is optimized for the iPhone 5.

Improve your iPhone headphone experience with Audio-3D player 7.1 originally appeared on TUAW – The Unofficial Apple Weblog on Mon, 05 Aug 2013 17:00:00 EST. Please see our terms for use of feeds.

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