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We also like the front-mounted auxiliary input jack, which can be used to play audio from portable audio players such as iPods. Audio-tweaking functions on the MEX-BT2500 are limited to a number of preset EQ configurations and a custom setting that lets the driver set high and low outputs. Like its predecessor, the MEX-BT2600 kicks out 52 watts (max) through four channels via a digital-to-analog converter. The system also features four-channel preamp outputs, including a selectable sub with its own level control. However, the entry-level unit lacks a number of the higher-end MEX-BT5100's more advanced audio capabilities, such as its EQ3 parametric leveler, and its BBE MP signal processing, which restores some of the sound quality lost through the compression of digital audio files by reamplifying acoustic details or "harmonics" that were reduced in the compression process.
In a major upgrade from the MEX-BT2500, the MEX-BT2600 gets a range of expandability options, making it compatible with external modules for connection to satellite and HD radio, as well as an optional intelligent iPod adapter.
With a price tag of $169.95, the Sony MEX-BT2600 represents a great value for those looking for an all-in-one hands-free calling and audio receiver. If you can live with its lack of phonebook transfer, the system provides an easy-to-use Bluetooth speakerphone with good calling quality and seamless integration. Its wide range of audio options--including support for Bluetooth audio--is an added bonus.