This thread is meant to be a simple comparison / reference, to make things easier for new comer to sort through dozens of IEM quickly in regard of finding the sound signature they are looking for. However, sound signature is not purely a translation of frequency response graph – and certainly not what this thread is about. To me (*at least in the context of this thread), sound signature is the perception of sonic energy distribution in the whole frequency range - the goal is to identify the "dominating" frequency range, the first patch of sound that will grab the lisner's attention. Beware, the graphs below are meant to make it easier for you to visualize the distribution of sound as interpreted by me, but not actually related to any measured FR curve. They are not absolute fact, but mere impression – and you should treat them as so. The truth is, each IEM has its very own sound signature, and categorized them into a few large groups will not give a detail enough picture to each individual IEM. In many case, sound signature of a particular IEM can fall between the gray area of two categories and depends on the listener’s perception, be categorized in different ways - the reader should beware as this is not a right or wrong question, but the different in personal perception. Then again, this thread is only meant to be the starting point of your research so you shouldn’t take it as it is. If you find the description of a particular IEM doesn’t meet your own listening experience, do trust your ears over mine. As always, do as much research on your own as you can. Play as much attention to the negative comments as you will do to the positive one. New to the Head-fi world and want to learn a little more about in ear monitor (IEM) / canalphone and portable music in general? Here are a few articles I wrote that might interest you. Note, they might not be the most correct things around, so take them as opinion, rather than fact: Basic Guide to In-Ear-Canalphone Which Way up? [Part 1 / Part 2] To Amp, or Not to Amp? Neutral vs. Natural: A Thought Reading the Baseline The Balancing Act Various IEM's tips pictorial comparison Some of you might notice the description of sound seems to have changed between the current thread and some of my older multiple IEM shootout threads - It is done so in purpose. The old threads were written individually over a time of three years or so, during which my own experience, taste, reviewing gears as well as perception of sound have all changed. In order to regain some unity among these old threads, I decided to revisit every single IEM I ever reviewed and gives them all a quick listening, reference them against my old review, then update or rewrite the sound description as I see fit so they can be more informative. Other than that, the overall ranking remains the same as before, except individual IEM is also rated in its own sound signature categor Pro and Con are basically some of the more obvious thing(s) to note about an individual IEM. "Link" next to individual IEM title points to individual reviews posted in the past. Note: Some of the reviews are quite old (by IEM's market standard), so takes that in account that what was great before might not be as great now, as market continues to move forward. Main reviewing gears including Cube C30, Sansa Fuze (alone or line-out feeding iBasso T3D / Meier Audio Corda StepDance) and Dell XPS420 + Foobar2K (ASIO) + 3MOVE. Lesser important gears (review wise) are HifiMan HM801 / HM602. See my profile for a full list of gears. Context: ( A = Analytical; Ba = Balanced; Bs = Bass; M = Mid; WS = Warm + Sweet) Altec Lansing iM716 (A-14) Apple In-Ear Headphones with Remote and Mic (A-16) Astello Radiance+ (M-37) Astrotec AM90 (WS-29) Atomic Floyd SuperDarts +Remote (Ba-02) Audio Technica ATH-CKS70 (Bs-10) Blue Ever Blue 866B (WS-49) Blue Ever Blue 868B (WS-44) Brainwavz alpha (WS-59) Brainwavz B2 (A-05) Brainwavz beta (Ba-24) Brainwavz M1 (M-26) Brainwavz M2 (M-18) Brainwavz M3 (WS-32) Brainwavz M4 (Ba-07) Brainwavz M5 (WS-25) BrookStone Clear Dual Drive Earbuds (M-12) Creative Aurvana In-Ear2 (M-16) Creative EP-630 (WS-60) Cresyn C222E (M-40) Cresyn C230E (WS-57) Cresyn C260E (Ba-30) CrossRoads MylarOne Bijou 3 (WS-55) CrossRoads MylarOne Quattro (Bs-18) CrossRoads MylarOne X3 (Ba-29) CrossRoads Woody One (WS-36) CrossRoads Woody Two (WS-37) Cube F1 (Ba-27) DUNU Ares (M-23) DUNU Crater (WS-28) DUNU Crius (M-24) DUNU Hawkeye (Bs-11) DUNU Hephaes (WS-38) DUNU I 3C-S (M-11) DUNU Tai Chi (WS-20) DUNU Trident (WS-45) EarsQuake CRO (Ba-33) EarsQuake FISH (Bs-29) EarsQuake SHA (WS-51) EOps noisezero Sport+ (Bs-04) Etymotic ER4P (A-11) Etymotic ER4S (A-04) Etymotic ER6i (A-18) Etymotic MC5 (A-13) ECCI PG100 (Bs-22) ECCI PR100 (WS-54) ECCI PR200 (WS-46) ECCI PR300 (Ba-18) ECCI PR401 (Ba-09) EXS X20 (A-09) Final Audio Design Adagio V (Ba-12) Fischer Audio Ceramique (WS-21) Fischer Audio Consonance (Ba-06) Fischer Audio DBA-02 (A-07) Fischer Audio Enigma (Bs-16) Fischer Audio Eterna (M-02) Fischer Audio Eterna v2 (M-21) Fischer Audio FA-977 Jazz (M-13) Fischer Audio FA-999 (Bs-28) Fischer Audio MightBug (WS-39) Fischer Audio Omega (Ba-25) Fischer Audio Omega v2 (Bs-20) Fischer Audio Paradigm v.2 (M-34) Fischer Audio Paradigm v.3 (WS-22) Fischer Audio SBA-01 (M-20) Fischer Audio SBA-03 (M-06) Fischer Audio Silver Bullet (Ba-05) Fischer Audio Tandem (M-07) Future Sonics Atrio M5 rev.2 (Bs-07) Future Sonics Atrio M5 (MG7) (Bs-02) HifiMan RE0 (A-10) HifiMan RE1 (WS-18) HifiMan RE2 (A-17) HifiMan RE-252 (A-03) HifiMan RE-262 (WS-05) HifiMan RE-272 (A-01) HifiMan RE-400 (WS-08) HifiMan RE-ZERO (Ba-04) Hippo Boom (Bs-23) Hippo Epic (WS-56) Hippo Shroom (A-15) Hippo Shroom-EB (Ba-15) Hippo VB (Ba-16) HiSound Audio (Golden) Crystal (A-06) HiSound Audio Popo (WS-17) HTC RC-E190 (Bs-26) JAYS a-JAYS Two (Bs-27) JAYS a-JAYS Three (Ba-28) JAYS q-JAYS (Ba-11) JAYS s-JAYS (M-31) JAYS t-JAYS Two (WS-50) j-phonic K2 SP (WS-02) Kanon MD-52 (Bs-24) Klipsch S4 (Bs-13) LEAR LCM-5 (WS-01) LEAR Le01 (WS-53) Maike MK-EL5031 (M-42) Maximo iMetal iM-390 (M-35) Maximo iMetal iM-590 (Ba-17) MEElectronics A151 (WS-30) MEElectronics CC51 (WS-26) MEElectronics CW31 (WS-41) MEElectronics CX21 (Ba-19) MEElectronics M2 (Ba-26) MEElectronics M6 (Ba-22) MEElectronics M9 (Ba-23) MEElectronics M11 (M-29) MEElectronics M16 (M-32) MEElectronics M21 (Bs-17) MEElectronics M31 (Bs-19) MEElectronics R1 (Bs-21) MEElectronics SP51 (WS-34) Meizu EP-40 (Bs-09) Miu-Audio MR2 Pro (Ba-14) Monster Turbine Pro Copper Edition (WS-09) NuForce NE-7M (Bs-15) Ortofon e-Q5 (WS-07) Ortofon e-Q7 (M-03) Panasonic RP-HJE70 (Ba-13) Panasonic RP-HJE450 (Ba-31) Phiaton PS20 (Bs-08) Phiaton PS210 (A-12) Philips SHE9850 (M-28) Phonak Audéo PFE 022 Perfect Bass (WS-16) Phonak Audéo PFE 121 (A-08) Radius HP-RLF11 (Bs-05) Radius HP-TWF11R (Bs-03) Radius HP-TWF21 (Bs-01) RedGiant A00 Malleus (Bs-06) RedGiant A03 Ossicle (WS-11) RHA MA-350 (Bs-12) Rock It Sounds R-10 (M-38) Rock It Sounds R-11 (WS-58) Rock It Sounds R-20 (M-19) Rock It Sounds R-30 (M-17) Rock It Sounds R-50 (A-02) Samsung EHS64# (Ba-21) Sennheiser CX300 (Ba-32) Sherwood SE-777 (WS-31) Shure E3c (M-33) Shure SE215 (M-08) Shure SE530 (M-01) Sleek Audio SA6 (M-10) SonoCore COA-803 (Bs-14) SonoCore COA-805 Cindy (Ba-10) Sony MDR-EX85SL (M-41) Sony MDR-EX600 (WS-14) Sony MDR-EX700SL (Ba-08) Sony MH1C / Sony Ericssoon MH1 (WS-12) Sony MH750 (WS-47) Sony XBA-1 (M-09) Sony XBA-4 (WS-10) SoundMAGIC E10 (Ba-18) SoundMAGIC E30 (WS-36) SoundMAGIC EH11 (M-27) SoundMAGIC PL-11 (Bs-25) SoundMAGIC PL-20 (A-20) SoundMAGIC PL-21 (WS-52) SoundMAGIC PL-30 (A-19) SoundMAGIC PL-50 (M-25) Spider realvoice (WS-27) Sunrise Xcited (Ba-03) Sunrise SW-Xcape (M-04) Sunrise Xcape v2 (WS-23) Sunrise Xcape Impressive Edition (WS-13) TDK BA100 (WS-19) TDK BA200 (WS-04) TDK EB950 (WS-15) Ultimate Ears 100 (M-39) Ultimate Ears 200 (M-36) Ultimate Ears Triple.fi 10 Pro (Ba-01) VSONIC GR01 (WS-03) VSONIC GR02 Bass Edition (WS-40) VSONIC GR06 (M-15) VSONIC GR07 (WS-06) VSONIC GR99 (WS-43) VSONIC R02 Pro II (WS-42) VSONIC R04 (M-22) Westone UM2 (M-05) Woodees IESW100B (WS-48) Xears Powerball PB120 Black Edition (M-30) Xears Resonance Black Edition (WS-33) Xears Revolution Series XR120PRO II (M-14) Xears Turbo Devices TD III PRO Blackwood (WS-24) This thread will not longer be updated.