New Technologies

The Centro Force Redesign:

Undeniable Proof of improvements in measurements... No euphoric word fluffs, like other sites who sell based on how convincing they write. Below are recorded actual results.

Centro-Force, a "True Technical Upgrade", in two stages :

1st Stage- Ground breaking implementation of 4 stage Plural magnetic core, engineered for optimally controlled excursion parameters of the driver.

Maximizing driver performance to its limits involved a complex core. This advanced multi-element core is also designed to last indefinitely, longer than the lifetime of the headphone, without any parameter change or loss in efficiency and exacting performance. Upcoming kits (for technically inclined) available now!

Frontal redesign:

2nd Stage, New rear design :

A new rear “Acoustic reinforcement waveguide cavity” design, for uniformly reshaping the audible spectrum.. This is a "first" in a design that "corrects" the Frequency response, while restoring full BASS lost in design. A true acoustic fix for increased BASS!

This engineering distinction is that this is not a "material tuning" ...

These are actual structural changes

Technical Specifications:

HD800 & 800S CF Measured Results below:

For greater familiarity to consumers, the below results are displayed on the popular "REW" program:

Along with the overall massive increase of the low range (in blue), we also restored more liveliness in the 5-6khz area (less dip), along with a more uniform upper range treble area for more true sounding instruments like cymbals.

**HD800S-CF Improved Frequency Response (blue):

Next, the CSD/Waterfall plots:

Standard measurement of Stock HD800S, about 35db down:

key points:

**The peak rise time both before & after the "0u" mark is reduced. This faster impulse time means increased speed and resolution.

**After the peak wave shows reduced artifacts & basket reflections = well controlled decay.

All these measurements above, are our proof of the "Centro-Force" Upgrade improvements. Real documented improvements that No other HD800 modification, improvement, or "version/variant" to date, has achieved.

We are confident that you will hear the noticeable improvements to the sound, and agree this is simply not another sound profile, which all past versions and mods have essentially been.

Lastly, the 800CF mod (in blue) impulse response:

First off, the Bass:

On 800CF a 9db increase @ 10hz (5db increase on 800S). While this extreme sub bass area isn't evident in actual music (normal mid-bass frequencies are around 60 HZ), this increase represents the scale of "improved mechanical control" and performance.

"Before and after" of the older HD800 version, showing similar improvements of ringing decays above 2.5khz, which are all gone with the "CF" Mod.

The lack of all ringing (trailing peaks) after 1.5 milliseconds of depth, leads to insane level of clarity and pin-point imaging.

Both 800CF & 800S-CF retain a new sustained increase of 4-5db across the "bass to mids" region, attributed to the new rear design.

The cumulative amount represents an increase of over 72% of the overall bass spectrum.

The thin drawn vertical red lines marked over the peak trails, represent multiple rows of lower-level "ringing" in multiple frequency areas.

This audibly translates to the infamous "diffuse soundstage" and "artificial spaciousness" that plagued these headphones, resulting in a less focused images as a result.

These rows are about 25-30dB down, which is easily discernible to the human ear (as diffuse sound), because the human ear sensitivity typically hears details 60-70db below sound peaks. This sensitivity is even more noticeable with headphones, and even more so with IEMs.

This is where the "Centro-Forcce" mod distinguishes itself from ALL other modifications, with the elimination(!) of these ringing (peak trails), to produce a clarity of notes in space, that was unachievable anywhere before:

HD800S-CF version:

Notice only the thin red horizontal lines are drawn, as there are no vertical rows of peaks. This shows just the bass gradually sloping diagonally with little ripple, unlike the stock image ripples.

The result is a much clearer/deeper soundstage, with nuances in music instruments more "fleshed out".

"Before & after" comparison: