Here Is my Opinon:
Coming from an HTC One m8, Iphone 4...
The Galaxy S7 Exynos with the Lucky CS47L91 Soundchip sounds a bit Dark, I have to reduce the Lowend at 100-600 a bit, to make it Airy otherwise it really can sound muffled and lifeless.
The S7 is a Warm Phone, it has emphasized the Lowend more, than the Upperside, so it is really Good for HipHop, I Think.
For me, I dont like the Sound, SO I have an App Onkyo, its really Audiophile APP, where u can configure the Equalizer. The S7 is really nice to handle with an Equalizer, u can get what u want!
But In Comaprison with HTC One M8 and Iphone 4, it definetly Lacks in Details in the Mids and Highs!
Where the Vocals whispers in ur Ears in M8 or Iphone, the S7 delivers it a bit far away and does not present ALL Details of the Vocals.
Im really Dissappointed that Nowadays such a Great Phone Like S7, which got really Low Volume. For Me I Love really Loud Music, M8 really spoiled me and showed me how u can get Clean Loud Volume, I was shocked when I listened to the S7 in FULL Volume!
I really Hope S8, will get much better,
Samsung did his Own Audio Chip latetly, it will hopefully be better in the next Generation.
A more Neutral Sounding, with more Details in the Mids and Highs with Low Impedance Output, that Would really be a Deal Breaker and they would join the Audiophile Market easily!
Waiting for the Galaxy S8 Now, I hope Samsung will not Sleep and will get a better Audio Chip!
Its such a Great Phone, I LOVE IT so much, always when I Open the Phone, I Enjoy the Design, Speed, FUnctionality, never got such a Beautiful Phone!!!
The Only Problem is the Sound, the Rest of the Phone is really unbelievable Awesome!