The GR07 are very good sounding for the price and will replace them well because highly detailed soundquality, punchy bass, crisp clear mids, highs and wider soundstage with great builtquality. The other IEMs like UE TF10Pro, JVC FXZ100, FXZ200 and Sony EX7550 are also recommended too.

If you are looking for wider soundstage, crisp clear soundquality with bigger bass then JVC FX700, Denon C300, Sennheiser IE8, UE TF10Pro are amazing for the price.

If you are short on budget then Fiio E11 are great buy and they sound powerful, detailed, punchy with most low impedance headphones but JDS C421 are clear upgrade over E11 without paying much.

The Difference is big enough to make decision easier about these headphones like HD800 are bright yet clilincal, highly detailed but on cold side of sound. Grado PS1000 has little wamer, airy soundsignature than HD800 and highly detailed, vocal(male/female) sound so amazing on PS1000 and at the...

The Grado PS1000 are the most natural sounding headphones with wide soundstage and overall balanced soundquality. LCD-02 are also close and they sound amazing if pair with right AMPs/DAC.

The LCD-02 has big solid punchy deep bass and realy wide soundstage with amazing midrange and good detailed highs if pair with right AMPs/DAC(tube AMPs are recommended)..

The Turbine, Sony EX600, JVC FXD80 are great for these genres music and they are quite detailed without being bassy(only Turbine having very punchier bass but it still detailed). BTW if you can find Klipsch Image X5, UE TF10Pro for that price and they are amazing sounding, both offers punchy...

The RE272 are very good sounding(very detailed, wide soundstage, balanced)and they are better pick if need close soundsignature to TF10Pro without being bassy. The balanced sounding IEMs like EX1000, GR07, ATH-CK100Pro are great sounding IEMs.

The E11 is pretty good for the price but JDS labs C421 are amazing for the price.

Usualy at CES every year news spread if they anounce to release new model with more drivers but so far no news this year at all. The Heir Audio released 5 drivers BA universal IEMs and maybe soon others will follow that.

The Sony XB60EX, JVC FX3X, Turbine are pretty good for the price and they offers rich bass experience with good mids, highs.

Quote: If you want instruments sound so natural and dynamic then JVC FX700 are highly recommended because it uses wood housing and it add warmth and texture which help instruments to sound so natural and dynamic. It has very deep reverbing bass, bright extended highs and wider soundstage...

The Jerry Harvey made the UETF10Pro and if you like the same soundsignature then JH16Pro are amazing because it has wider soundstage, bigger bass and rich detailed mids, highs than UETF10Pro. Westone ES5 is another great IEMs with forward highly detailed mids, well extended highs, tight punchy...

IMO Denon C300 willbe safe buy and it offers heavy dynamic bass and crisp clear soundquality.

The Sony EX300, JVC FXC50, Philips SHE3590 are pretty good for the price and they produce good punchy bass and extended bright highs, overall they are very fun and good sounding for the price.

The Denon C300 has most powerfull bass i have ever heard on IEMs include more than UE SF5EB, JVC FX700, FXZ200, MTP Gold and IE8. Denon C300 has large dual dynamic drivers(earpiece is bigger than most dynamic drivers IEMs) and they produce very powerfull bass and crisp clear, mids, highs even...

The Ultrasone closed headphones like Pro900 are very good if need deep reverbing punchy bass(more than M80) and they comes with S-Logic technology which makes music more like surround sund(huge surround sound soundstage) and they offers very good instruments separation.

Quote: Then i wil recommend to buy Cowon X7, X9 or Andriod based DAPs like Samsung Galaxy 5.2, 4.2, Sony Z sereis walkman and download sound enhanced APPs like Neutron Player and you will have amazing soundquality MP3 player which willbe much better than iPhone 4s.

If you are looking for bassy yet detailed IEMs then UE TF10Pro, Klipsch Image X10, JVC FXZ100, FXZ200, Sony XB90EX, Yamaha EPH100 and GR07BE are highly recommended. GR07 are amazing for the price with tight punchy bass and shows lots of hidden detailed(wider soundstage).

The GR07 are very good sounding yet offers pretty good punchy bass and wider soundstage(highly recommended) and GR07 bass edition version is also avalable too. UE TF10Pro, Klipsch Image X10 are another great bassy IEMs and shows lots of hidden details in music and they has wider soundstage.

I feel this strange sound change great to bad and it hink where software invloves then it gives multiple access to some play around.

Quote: Agree, The iPhone 4S offers true lineout signals(much cleaner than HP jack) through line out dock port and AMPs will realy help to improve the soundquality than HP jack.

The Klipsch M40, K550(are very good sounding and very detailed), Denon D2000 are highly recommended if you can find them because they are realy good sounding with punchy bass and realy improve with AMPs help. Denon D600(amazing sounding with punchy bass but soundstage is smaller than D2000)...

The Sony XB90EX, JVC FXD80, Turbine, Klipsch Image X10 are very good with genres music because they emphesis on bass and overall crisp clear soundquality.

The JDS Labs C421 are lot more clear than any Fiio AMPs i tried and they are well biult. RSA Mustang P51, XM6 are also small and much better sounding AMPs.