I bought a new 2013 Sonata SE in October and was not happy at all with the factory system, mainly because at 70mph on the freeway I couldn't hear the stereo very good even at max volume. Wanted to keep the stock look and features, so I opted to add a 4 channel amp. I chose the NVX 2 channel line out converter after a Sonic rep recommended it for my situation. I used it to tap into the front speaker wiring behind the head unit, then connected the NVX LOC2 to a HiFonics 4 band EQ that I mounted in my center console storage under the armrest. I ran 4 channels out from that to an MTX Thunder amp that I've had for almost 10 years now and installed new Alpine components in the front doors and Infinity coaxials in the rear doors. System sounds incredible and I'm glad because I had never used a line out converter before and was concerned about the sound quality potentially suffering. Can't say for sure that a new head unit wouldn't sound even better, but I can say that I am completely satisfied with the sound I'm getting with everything running through the NVX XPLOC2. It also gives you a remote line out to make adding an EQ or amp a breeze. Would definitely recommend.
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