Originally Posted by AudioFile1
I realize this is a portable gear thread/forum, but I couldn't find this topic anywhere else (albeit I guess I could create a new thread somewhere else).
I wanted to clarify for some of us that actually have full 11.2 Hi-end home stereos (and car systems) that this prejudice in sound adjustment in iOS 7 is well geared perhaps for headphones, but for systems that are carefully calibrated to reproduce sound, it's horrible.
I first noticed on my car stereo (Mark Levinson) that the bass sounded high (it already has an auto sound leveling/equalizing, which for the most part is the best I've seen anywhere; Personally, I rarely need to turn it off). Now all songs are a bit high on the bass, but since it's an auto leveler, it manages to control sound still quite a bit.
However, in one of my home systems (bedroom; setup details below), no auto leveling (as it's horrible in Yamaha), there's a lot of boom and bass, and treble is significantly gone.
Update: I don't know if Apple did something to improve the equalization in 7.0.2, but after I upgraded to 7.0.2, it doesn't sound bad at all with some VERY minor adjustment on my D6000 sub.
It's definitely true that the mids and highs have been cleaned up a little bit - they used to distort in several of my songs that I had tweaked, but I always assumed it was because I had equalized them myself - the bass has been tweaked, of course as mentioned by everyone.
I actually played the iPod in an OLD iphone 3GS running 6.1.3 and my iphone 5 on 7.0.2, and while the difference is discernible, the 7.0.2 actually sounded better overall. I raised the treble in the pre-amp as high as it could go and took 2 db's off the center D6000 sub, and now I'm pretty happy - knock on wood this doesn't mysteriously change.
Now as a preface, I should note that my iPhone 3GS and 5 probably never sounded the same. When I used to have the iphone 4; my brother's, which was also a 4, sounded a lot 'harder/louder' than mine when hooked to a receiver (whether wire or Bluetooth).
So I'm not sure how much different the same songs would sound on an iphone 5 with 6.1.4 vs 7.0.2. I might ask my brother to come over so that I can have a final verdict. From the 3GS they sound a bit more powerful (what I remember loosing) but more distorted.
So I'll post an update if I get to test with another iphone 5 running iOS 6.