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MartinLogan Mikros 90 Reference On-Ear Headphones

100% Positive Reviews
Rated #27 in On-Ear


Pros: Currently very affordable and incredibly sonically poised

Cons: Clamping force might bother some listeners

Bass: solid, balanced and extended with excellent pitch. Can be Stygian and prodigious with the right recordings.  May lack mid-bass warmth/emphasis for some listeners.

Midrange: open, clear, coherent, tonally saturated and complex. Vocals are rendered with breath-taking realism.

Highs: clear, detailed and extended with no glare. Excellent sparkle and finish on tambourine, rider cymbal and high brass.

Soundstage: recording- and equipment-dependent. Can assume strikingly large 3-D proportions. The music floats free in space with no sense of closure/constraint.  Superb separation within, and delineation of, the performance space.  


Excellent resolution of massed instruments and vocals. These headphones allow you to hear deep--and I mean deep--into the details of the recording, and into the relative strengths and weaknesses of your upstream gear.  


I get a very good seal by wearing the headphones slightly low and forward on the ear, slightly swiveled in along the natural angle of protrusion of my ear, and with the leading edge of each ear cup at about my mandible hinge/back end of my cheekbone..

The MLs scale up extremely well, venturing--IMHO--into the "reference" category.  On my home rig, the Mikros 90 even give my HifiMAN HE-6--which run balanced, straight out of my speaker terminal outputs(!)--a serious run for the money!

After initially ordering, I wasn't sure what to expect, but the Mikros 90 have exceeded my expectations with plenty of (head)room to spare. I would rate these, hands down, near the top in the Top 10 list of all the headphones I've ever owned and/or listened to to date. Given their current street price, these are a runaway "no-brainer".

Have not auditioned the KEF M500 yet, but would like to eventually do the a/b alongside the Mikros 90.  

UPDATE: See link to comparative review: http://www.head-fi.org/t/695615/kef-m500-versus-martin-logan-mikros-90

EVS-modified SONY BDP-S780
Neotech UPOCC interconnects

Fitz-improved Bada PH-12 (2x Tung-Sol 6SN7GT and 1x Sylvania 6SN7GTA)
(or) Linn Intek integrated (headphone out)
Dakiom F-273 feedback stabilizer
Pipeline ET-4 cable
GIEN carbon fiber disc mat
MyAudioCables power cords
PowerVar AC conditioners

EVS-modified Oppo DV-970HD
Virtue Audio interconnects
KMF Audio headphone amp
Dakiom F-273 feedback stabilizer
Pipeline ET-4 cable
SID disc mat
MyAudioCables power cords
PowerVar AC conditioners



Ultimate Joe Williams

Digital Duke

The Essential Sarah Vaughn

Toots Thielemans: Footsteps

Lee Rittenour: Festival

Cal Tjader: The Roots of Acid Jazz

Dave Brubeck Quartet: Time Out


Henri Mancini: Movie Classics

Hiroshima: Go & Third Generation

Herb Alpert and the Tijuana Brass: Classics Volume 20(?)


The Yardbirds: Roger the Engineer (Over, Under, Sideways, Down)

Iron Butterfly: Light and Heavy/Best of

Jefferson Airplane: Fulton Street/Best of

Elton John: Greatest Hits & Tumbleweed Connection

Steely Dan: Decade of Steely Dan

Cat Stevens: Tea for the Tillerman

The Marshall Tucker Band: Best of

BTO's Greatest


Commander Cody: Best of/Too Much Fun

Earl Thomas Conley: Greatest Hits


Baltimore Consort: On the Banks of the Helicon


Pros: Excellent treble, good transient response, nicely detailed on higher mids and treble, good instrument separation & imaging, transparency

Cons: A little shy on the bass, price, hard to get a good seal sometimes

The Sexy Martin Logan Mikros 90

Hey guys,

When I have seen these headphones for the first time they got my attention with their looks.  They have a very nice design and a stylish and sturdy build quality. They are intended to be a fashion headphones, that is for sure, and I’ll be damned if I have seen a better looking headphone. They really blow the competition out of the water with the looks, feel and style.

Martin Logan Mikros 90

They are almost completely covered in leather. The headband has a very strong & thick metal body. The cable is detachable and even if it has volume control on it, it still is a very good cable. Why am i telling you this? Because the cable from Focal Spirit One can be used with the MikrosAfter using the cable from Spirit One, I have realized that the stock cable from Mikros bring more detail, better transient response, and open the sound more.

Martin Logan Mikros 90

While admiring the looks, I realized they are Martin Logans! Now it really got my attention. I really respect and admire this company for the excellent speakers they make.  When I first heard their entry level electrostatic speakers, the Martin Logan ElectroMotion ESL, they really blew me away. I have never heard such sound-stage, level of details, transparency, transient response, etc in a speaker system, especially at that price.


These headphones are on ear and you must be attentive with this as if you don’t set them well on the head, you won’t get a good seal and it will affect the sound ( bass & body the most).

From what I have seen, the cups set on the ears with an angle, so I think these are meant to be like that, as angled drivers usually offer more sound-stage and a better stereo image.

Some people may find the clamping force a little too strong, but I think it gets looser in time.

The package comes with a nice portable storage box that I think is also made of leather, the detachable cable and with a 3.5 to 6.3 adaptor.

Sound Impressions

The first listening impression was somehow weird and a little disappointing, as I felt they lack body & bass. After a few minutes of changing some songs it started to get to me. They really have some interesting features that make them stand out of the crowd.


This is one of the strongest points of these headphones. The treble is crystal clear and very well extended & detailed without being harsh or sibilant. I never heard such quality treble in an closed headphones yet. It is amazing!


The mids are quite good. The voices are clear & transparent but lack some body. The guitars and other similar instruments have a very good impact and presence.


Ok this may seem one of their weakest points at first glance. The first thing you will notice at your first listen is the lack of body. However, if you give them a chance you will notice it has a very good punch and the bass is very well controlled & extended . After burn in the bass kicks in.I am sure there will be people to consider the bass to be too shy but I like it. On some songs I enjoy the fast, controlled , well extended  & punchy bass.


The details were very nice especially on the higher mids and treble.

Transient response

This is another thing that really drew my attention. The plucking of the guitar, the percussion, hand claps, etc were very impressive.  The decay is natural and not lazy at all. I just love how the piano, guitars, violins sound on these babies.


Never expected this level of transparency from a portable headphone, but the music really gets the hold of you and letting aside the strong clamping force, you forget about the headphones.

Instrument separation & sound-stage

If you look at the headphones you wouldn’t think they will have a wide sound-stage, especially with their size and the fact that they are closed, but they sound very open and clean to my surprise. The instruments are very well separated  and placed into space.


The Mikros is a very interesting pair of headphones and managed to impress me on many levels. They are good for instrumental music, classical,  jazz & vocals, even though these genres could use some bass presence too sometimes.

One other thing you should remember, is that they don’t like poor recordings.

I, however enjoy listening to  some house music & electronic , like ATB, Armin van Buuren, Infected Mushroom, etc on them too, but not as much as with other headphones like spirit one, d7000, amperior, momentum , etc.

Don't forget to let them break in for at least 20h, as they really open up, even the bass starts to get better.

Martin Logan bring an interesting new approach and style to the market with these headphones.

So if you care for the looks, crisp & detailed treble, transparency and are not into heavy bass, but still punchy and tight bass, give them a listen.

I tested them with Burson Conductor, Galaxy S4, Fiio E17.

Loved them from the S4 and E17. These headphones really grew on me. I am starting to think of buying one myself.

E17 and the Mikros 90 are a very good combo, as fiio really adds bass presence. I found myself listening to rock in this combo and enjoying it :D

Because of this combo and their very transparent and clear sound I give them 4.5 stars. 


  • excellent treble
  • good transient response
  • nicely detailed on higher mids and treble
  • good instrument separation & stereo image
  • transparency
  • excellent build quality & very good looks
  • decent isolation
  • portable
  • storage box


  • lacks body & bass presence
  • hard to get a good seal sometimes

Martin Logan Mikros 90

MartinLogan Mikros 90 Reference On-Ear Headphones

Inspired by the sonic clarity and detail of our legendary electrostatic speakers, the Mikros 90 reference in-ear on-ear headphones deliver the realism, richness, and purity of sound that MartinLogan's discerning customers have come to expect. Obsessive attention to detail, sleek minimalistic design and high value materials are deeply engrained in our design philosophy that we've extended to Mikros headphones. Designed and voiced in house by the same team that has created 30-years of electrostatic speaker innovation, Mikros 90 was carefully crafted with premium materials like genuine leather, light weight aluminum, and solid noise isolating ear pads. Each piece comes together flawlessly to create a uniquely MartinLogan experience.

FeatureIncludes soft, replaceable ear pads which isolate up to 92% of ambient noise for outstanding sound quality with natural deep, extended bass and an open, revealing midrange. The Mikros 90 body is constructed from genuine leather and lightweight polished aluminum to provide years of deepening enjoyment. Included with each headphone is a compact carrying case to assure safe stowage when traveling. Apple-approved in-line remote and microphone controls volume, play/pause, track, voice control, and seamless transitions between music and phone calls on compatible Apple devices. Remote and microphone also function with a variety of smart phones, digital media players, and similar devices with a standard 3.5mm 4-conductor socket. Inspired by the sonic clarity and detail of MartinLogan's legendary electrostatic speakers.
ModelMikros 90
MPNMikros 90
TitleMartinLogan Mikros 90 Reference On-Ear Headphones, Black
Warranty1 year parts and labor
CatalogNumberList - CatalogNumberListElementMLHP
Item Height7.8 inches
Item Length2.4 inches
Item Weight0.36 pounds
Item Width6.9 inches
Package Height3.3 inches
Package Length10.2 inches
Package Weight2 pounds
Package Width8.6 inches
PartNumberMikros 90
UPCList - UPCListElement877929007539
Model Name/TypeMPNEAN/UPC
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