Eiosis announces E²Deesser - De-Esser plugin

A new approach to de-essing
A de-esser is usually a simplified multi/single band compressor driven by a filtered side chain. With the E2Deesser, the detection process is completely independent from the processing, offering unprecedented flexibility in controlling and adjusting the amount of sibilants in your recording.
You may combine wide band reduction with narrow band or low pass sibilance reduction, or even reduce a certain frequency range while boosting the sibilants’ global volume. And there's more: you can add some sparkle to the voiced parts without touching the sibilants…

Powerful sibilant detection
Most de-essers have an absolute detection ratio. Not so with the E²Deesser; it detects sibilants uniformly regardless of the input volume, so you don't have to worry about monitoring the input level while adjusting the settings.
Like most de-essers, you can freely adjust the E²Deesser’s detection frequency. But unlike most de-essers, you can also adjust the responsiveness of the detection process as well as the reduction ratio, which is extremely useful when balancing between sibilant and voiced processing.

Don't cut your vocal brightness
With a conventional de-esser, you have to lower the compression threshold for more pronounced sibilant reduction, which has the side-effect of reducing the overall brightness in the vocal, rendering it dull. We at Eiosis believe that a good de-esser should cut sibilants without affecting the tonal qualities of the sound. The E²Deesser allows you to reduce sibilants gain while keeping the voiced parts intact, ensuring that the vocal’s brightness remains untouched.

Adjust the Detection
If you find the transition between sibilants and voiced parts becoming too abrupt, simply reach for the response and the reduction knobs in the detection section. This allows you to fine tune the transition between sibilant and voiced parts, ensuring uniform correction and giving you complete control over precision and smoothness of the sound.
In most de-essers, changing the detection filter’s frequency also changes the behaviour of the detection process. Not so with the E²Deesser: adjusting this frequency has no effect on the sibilants’ equalization.

Equalize your sibilants…
The E²Deesser allows the user to independently control and fine tune the volume and equalization of sibilants. The usual method is removing the offending frequencies or decreasing the wideband volume. The E²Deesser however, allows you to combine both techniques to obtain a much more natural result. The E²Deesser lets you choose from a variety of filter types (low pass, high shelf or peak/dip), and simultaneously adjust the volume of the sibilants.
…using a wide range of creative possibilities
Prior to the E²Deesser, de-essers trended to employ steep negative dips or low-pass filters for detection and filtering. With E²Deesser’s patented structure and settings, you have the flexibility of selecting say, a wide cut, while boosting the sibilants’ global gain to compensate the overall loss in the sibilant loudness, yielding far more natural and professional results.
A gain boost may be utilized to undo the effects of de-esser misuse, in which sibilants sound muddy or unnaturally "cut". With the E²Deesser, you can easily "repair" tracks that have been over de-essed. It is a valuable time saver and superb corrective tool! 
Add breath without adding unnatural harshness
One of the most useful features of the E²Deesser is actually an interesting counterpart to its de-essing capabilities: selective voice equalization. Vocal tracks usually benefit from some sort of enhancement in the highs, to increase their presence and add ‘air’. Unfortunately, the frequencies you need to boost are the same ones that can cause unpleasant and strident harshness and sibilance.
With the E²Deesser, you can finally adjust the amount of air and presence in your vocal tracks without boosting their sibilance. 
Be creative with the E²Deesser
The E²Deesser is an extremely versatile tool. You can use it on bass, drums, loops, a solo instrument, or even over an entire mix. You can use it as a dynamic EQ, as a mastering high frequency limiter or as an exciter to sprinkle just a touch of ‘fairy dust’! Its exclusive and patented structure allows an endless amount of creative applications and setup possibilities.
For example, a slap bass track may need a low pass on pulled string notes and a slight presence boost on thumb notes, while a particular mix might benefit from some softening in the higher frequencies, without modifying the overall spectral balance.
The last but certainly not the least…
Perhaps the E²Deesser’s versatility and power can be best demonstrated by this feature: you can set up two identical tracks with the E²Deesser on each, with the same settings, and process the sibilant and the voiced parts completely independently. You just have to activate the ‘Listen’ switches for the sibilant and voiced section for each track.
You can then apply different amounts of equalization to each part, send the sibilants to a different reverb aux bus, and apply different effects to the sibilant and voiced parts. For vocal tracks, you can add some air to the voiced parts with the AirEQ's Air Band, while independently compressing the sibilant track.
The possibilities are really endless and are presented to you in Easy and Efficient format! The E²Deesser is the most advanced de-esser plugin on the market today!

The E²Deesser will be available in November.

"The E²Deesser features Eiosis' patented, exclusive processing structure and algorithm to bring you a new approach to de-essing. The E²Deesser is unique in that it allows you to separately process, audition and even route the sibilant and voiced parts of a vocal track: an extremely powerful feature that has been previously unavailable in de-essers. This patented feature provides unprecedented flexibility in the de-essing process, and opens up a new field of audio applications and effects, all in an Easy and Efficient way. It makes the E²Deesser the ultimate de-essing tool for post production, broadcast, cinema, and vocal recordings." Via