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aftermarket headunit
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  1. Mazda3 (Axela)
    Im about to buy a mazda 3 from 2007 with bose sound. I am planning to install an aftermarket HU, as i want to install a sub, and i need the bluetooth connection. Is this possible, or is the speaker signal from the HU going to get amplified by the bose amp, making the signal loud/distorted...
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