First of all my thanks goes to Achal(Strategy) for sending me his S4.
S4 are quite small when compared to re1 or re0. Very good for portable use and comfortable. Oval gels seal much better than head-direct biflanges.
S4 is known for bass. Good impact. Heart beat in some songs and movies seems like u r listening to ur heart pounding.
S4 at times get too bass heavy for me and became a reason for headache
Nothing to Cherish in mids esp vocals. At time i feel S4 get a little harsh in vocals. In A track by Pankaj Udhas - Aansoo Jab Palkon Se, I felt harshness. However u can tweak tht using EQ.
Treble is better than my Re1. U wont have any complaints here. Its not top notch but satisfactory.
S4, Re0 and Re1 falls under same price range
While S4 rules in bass, Re0 in Treble and Re1 in mids.
they do same thing differently. It all comes down to personal preference.
For now, my personal fav is Re1. They are very smooth and suits my taste.
Sorry if review is short and not detailed. I dnt like to write much.
At last, my thanks to Achal for sending me his S4
Enjoy ur Music
Forgot to mention what i discovered about my musical taste after listening to S4.------ I dnt like bass impact at all, I cant live without good midrange and i still love bass from my lost RE0 though i always wanted a little more quantity. So i m back to my RE1.
S4 are quite small when compared to re1 or re0. Very good for portable use and comfortable. Oval gels seal much better than head-direct biflanges.
S4 is known for bass. Good impact. Heart beat in some songs and movies seems like u r listening to ur heart pounding.

S4 at times get too bass heavy for me and became a reason for headache

Nothing to Cherish in mids esp vocals. At time i feel S4 get a little harsh in vocals. In A track by Pankaj Udhas - Aansoo Jab Palkon Se, I felt harshness. However u can tweak tht using EQ.
Treble is better than my Re1. U wont have any complaints here. Its not top notch but satisfactory.
S4, Re0 and Re1 falls under same price range
While S4 rules in bass, Re0 in Treble and Re1 in mids.
they do same thing differently. It all comes down to personal preference.
For now, my personal fav is Re1. They are very smooth and suits my taste.
Sorry if review is short and not detailed. I dnt like to write much.

At last, my thanks to Achal for sending me his S4
Enjoy ur Music
Forgot to mention what i discovered about my musical taste after listening to S4.------ I dnt like bass impact at all, I cant live without good midrange and i still love bass from my lost RE0 though i always wanted a little more quantity. So i m back to my RE1.