LCD-X (Fazor)

back to Audeze
back to measurements

published: Jul-5-2017, updated: June-6-2021

post separation

NO SMOOTHING is applied to the shown plots. Most measurement sites have some smoothing applied which ‘irons flat’ sharp peaks and ‘wiggles’. I do not use smoothing because some info about sound quality is lost when plots are smoothed.

Aside from a small correction of the microphone itself also some correction in the lowest frequencies is applied to the plots to compensate for the perceived loss of bass when using headphones. This is described HERE in more detail.
A ‘horizontal‘ frequency response curve on the shown frequency response plots on this website thus indicates a perceived ‘flat’ tonal signature.

ALL measurements are made with a good SEAL on a flatbed measurement rig.
The shape of your head, bone structure, pad size, pad ‘softness,  (compliance), hair or no hair and or wearing glasses may (drastically) change the frequency response of some headphones, so… your personal experience may differ substantially from these plots.

Frequency response (tonal balance) is the most sound-determining aspect of headphones. A horizontal line shows audible neutral response in the plots on this website. Deviations in different severities at different frequency bands have an effect on the sound character.
The bigger the deviation the stronger the effect.

Below an aid to help determining the sound character of headphones with relation to the frequency response.


post separation
Audeze LCD-X

The Audeze LCD-X is an open orthodynamic headphone.
It has a 4-pin mini XLR connector on each cup and thus has a cable with a Y-splitter in the middle.
This headphone is quite heavy in weight which may put some people off.
It is intended for home usage. The headband and pads are soft and made of real leather or micro-suede (your choice).
The cups are made of real solid wood and is available in a few different wood types.
It really should be driven from better DAP’s or from decent headphone amplifiers etc.
A phone or tablet will not cut it.
This headphone is designed to be driven directly from portable sources. Because of this the impedance is quite low (can be between 15Ω and 22Ω) and the efficiency is a bit higher as well. As a result just a small voltage is already enough to create a decent SPL.
In pricing it is between the LCD-2 and LCD-3.

Note that this headphone was measured at ears-unlimited-logo where unavoidable background noises were present in the demo room. Distortion levels and spectrum plot performance may thus be better in reality than shown on the plots.


Type: Over ear, open
Usage: Home.
Driver type: orthodynamic with Fazor
Pads: Lambskin leather or micro-suede
Foldable: No
Headphone connector: 4-pin mini XLR
Cable entry: dual
Cable: 2.5m with 6.3mm TRS plug
Driver size: 80mm diameter, active area 65mm x 50mm
Max power rating: 15W (< 200ms)
Max. S.P.L. > 130dB
Impedance: 21 Ω
Efficiency: 92dB/mW  (108dB/V)
Weight: 610 g.
Clamping force: Medium
Accessories: 3.5mm TRS to 6.3mm TRS converter, ruggedized travel case


Below the frequency response of the LCD-X (Left, Right)


The frequency response shows a neutral tonal response from 30Hz to 2kHz. Bass as well as sub-bas is there and of high quality. This headphone has a slight imbalance between the L and R driver.  The headphone was reseated and measured twice to confirm the difference was really there.
It isn’t really noticeable when playing music as the stereo image for freq above 500Hz have a much smaller imbalance and is what the brain uses the most for sound location.
While the mids are quite neutral it does (very slightly) lack some ultimate ‘clarity/presence’. It does  do ‘better’ than the LCD-2 and LCD-3 in this aspect. The dip around 3kHz is responsible for this. That dip is even smaller in reality than how it measures because the so-called concha-gain. This will make this measured dip smaller than it looks. It is still there though, just not as deep as the plots suggest. Treble extension of these fazor versions is quite good and is on the correct level.

The Audeze line-up has a few similar looking models that differ somewhat in tonal balance and nuances. Below a plot with the open versions in the Audeze line-up.
LCD-2, LCD-3 and LCD-X (alas the LCD-4 was not present at that time)

All open LCD in one plot

As can be seen the differences in tonal balance are not very big between 30Hz and 3kHz. Most differences can be found in the area between 3kHz and 7kHz.

Below the distortion plots of the LCD-X: (only right channel shown)
The distortion products are shown in dB.


The distortion is impressively low. About the same levels of the LCD-3
Below the same plot except shown in percentages.

DIST LCD-X R percent

Do note that some of the distortion ‘spikes’ may well have been caused by sounds in the demo room from ears unlimited when it was measured there. When it would have been measured in a very quiet room the results may well have been somewhat better.

Below the CSD of the LCD-X (Left and Right channel are overlaid)


The LCD-X is a little less damped than the LCD-2 and LCD-3. The ringing at around 5kHz is not seen in the LCD-2 and LCD-3 measurements.

Below the spectrum plot of the LCD-X (Right channel).Spectr LCD-X R

This plot also shows little issues. Bass and mids are quite clean. The issues around 5kHz are also visible in this plot.
The small signals around 1.5kHz may well not be coming from the headphone but are most likely sounds present in the demo room it was measured in.

Below the Group Delay plot for the LCD-X (Left and Right channel are overlaid)GD LCDX
Pad bounce is at a very low frequency and not an issue. The elevated area in the R channel for the lows indicates the pads had a little leakage. This is also observed in the frequency response and step response.

By lack of oscilloscope shots (not enough time to measure that) below a step response plot of the LCD-X. (Left and Right channel are overlaid)
Step LCD-X
Some (reasonable short) lived ringing. The sub-bass extension isn’t as good as that of the LCD-2 and LCD-3 but isn’t far behind.  The audible difference will be hard to establish.


The LCD-X is a headphone that measures quite well. Quite good in the distortion department, especially in the lows. Good in tonal accuracy.
Recommended for home usage only because of it’s open nature. It can be driven directly from a phone, tablet or DAP. Connecting it to a decent amp may still be somewhat beneficial.  Some people may not like the rather high weight. Comfort on the ears is good though. The pads do seal quite good which some find uncomfortable as it kind of ‘sucks’ to your head when you pull the headphones from your head.

post separation

back to Audeze
back to measurements