Viscount International: the Art of Sound!

Ouverture 468

It is frequently said that the most important stop on any instrument is the ambience. This is because the acoustics of a large reverberant space adds softness and scale to the sound. This is also an essential ingredient to achieve that majestic grandeur that is a signature of the sound of the pipe organ. The Ouverture organ has been specially designed to recreate the magnificence of the acoustics of a large reverberant space in a compact console, so that the organist can replicate the same exhilarating sound experience of a real pipe organ, directly in the living room or study.

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The OUVERTURE is an organ with 4 keyboards, complete pedalboard and 55 registers - each of which can select hundreds of organ and orchestra voices. There is also an orchestra register for every section of the organ which can be selected from the numerous options available. 

The organ comes with 8 organ styles (4 fixed and 4 programmable) that allow the organist to create and store an infinite number of combinations, either in the 128 internal memory locations or externally via USB memory. The parameter settings are easily accessible through the graphic display on the front panel. The “Tracker Action” style keyboard accurately detects touch by obtaining the speed of actuation of the keys, making it possible to feel a "Tracker Touch" effect, i.e .the correlation between the "touch" of the organist and the transient attack of each virtual pipe.

Developed with the award-winning and patented Physis® physical modeling technology, which reproduces the physical phenomena involved in the sound generation of the pipe organ, the Ouverture is capable of generating the highest-fidelity, most authentic church organ sound.

The Ouverture uses a revolutionary new sound system developed by Viscount called RAR (Real Audio Rendering). It is able to simulate multiple sound reflections of the walls, projecting the organist at center stage and involving them in an unforgettable sound experience – even from their living room or studio.

The majestic console was inspired by the artisanal organ crafting of French builder Cavaille-Coll – one of the most noted pipe organ builders of the 19th century and whose legendary style exemplifies elegance and refinement.

The instrument is equipped with four useful couplers in the sub-octave and super-octave, thanks to which the organist has an abundant variety of timbre combinations, within which the grand Plenum on the 32’ bass and the Concerto di Viole in 16’, 8’ and 4’ on the third manual.

A specific tremulant for the reed stop “Vox Humana” has also been included for expressive and fascinating effects.A dedicated thumb piston for each section allows the organist to play Orchestral sounds chosen from an extensive library. The Ouverture is a beautiful, as well as comfortable organ: the position of all the controls have been carefully studied and the music rack is both height and depth adjustable.



_____SPECIFICATIONS (Available=●)


Orchestral Selector  33
Manuals 4 x 61 notes "tracker touch" keyboards, with velocity control for MIDI and Orchestra sections.
Pedalboard notes 32 notes straight, straight concave, radiating concave
Register Control Drawknob
Internal Amplification 8 x 60 Watt + 1 x 100 Watt
Speakers 13
Expression Pedals 2
Crescendo Pedal yes


Pedal 12
Choir 14
Great 14
Swell 16
Solo 12
Styles 4 Preset + 4 User. Hundreds sound styles can be loaded and/or stored from/to internal memory and pen drive
Alternative Voices Selectable additional sound for each stop
Orchestral Alternative Voices Selectable additional sound for dedicated stop
General Pistons 8
Memory Bank 16
Total Memories 128 general, tens of thousands with pen drive
Piston Sequencer Prev - Next pistons


Toe Pistons 12
Automatic Pedal Yes
Enclosed Piston Yes
Couplers I/P - II/P - III/P - I/II - III/II - III/I - IV/P - IV/II - IV/I - III/II 4' (Toe Pistons)
Transposer -6/+5
General and Reverb Volume With rotary potentiometers
MIDI enable Yes
Orchestra and Midi Sustain Kick switch located on the side of the expression pedal
Remote Control Optional radio no directive 50 mt distance remote control with built in 2x16 display


Display 128 x 64 dots graphic with backlight
Voice Parameters Stop by stop adjustable voice parameters
Divisional Volume Separate for each division
Volumi Rendering Audio Separate for front height speakers and side speakers
Tremulant 3, Separately for each manuals depth and speed adjustable
Reverb 8 Types
Adjustable Ensemble Effect Adjustable
Air Pressure Effect Proportional to the active Voices
Historic Temperaments Kirnberger II, Kirnberger III, Werckmeister III, Werckmeister IV, Werckmeister V, Vallotti, Silbermann I, Silbermann II, Kellner 1975, Meantone, Meantone pure minor third, Zarlino, Sauveur I, Sauveur II, Barca, Rameau, Pythagorean; each with programmable "Tonic" Key Note
Short Octave Programmabile indipendentemente per ciascuna tastiera e pedaliera
Keyboards Inversion Yes
Programmable Output Routing Stop by stop adjustable windchest layout
External Output Volume Control independent volume control for each channel
5 Bands Equalizer on External Outputs independent equalizer for each channel
5 Bands Equalizer on Internal Amplification Yes
Midi Programmable Tx/Rx Midi Ch., Tx/Rx Midi Filter, Send PG, Keyb. Midi Velocity
Sequencer Interactive song sequencer with overdubbing function
File Management Copy, Load, Save, Rename, Delete etc.
Lock Organ With password


Midi In, Out, Thru Yes
Stereo Headphone Output Yes
Stereo Aux Input Yes
Mic. Input With gain control
External Output 5, 13 with output optional expansion board
USB to PC For finest finishing and personalization like Stop by Stop, Note by Note Volume and Pitch Regulation, Stop disposition, Internal and External Routing, etc. (optional)
USB for Pen Drive Yes
Dimensions (WxHxD) 188.0 x 137.5 x 119.7 cm / 74.01” x 54.13” x 47.12”
Dimensions without music desk and pedalboard (WxHxD) 188.0 x 137.5 x 78.6 cm / 74.01” x 54.13” x 30,94”


Cabinet Features Elegant construction with wood finish. Matching bench
Colours / Finishes Light oak real wood veneer , Medium oak real wood veneer, Dark oak real wood veneer
Weight 224 Kg / 493,8 lbs




Powered by Physis®

The OUVERTURE sets a new milestone in the reproduction of the classic organ sound as it effectively combines the unique RAR (Real Audio Rendering) and Physis® technologies, both developed by the Viscount Research & Development department. Physis® is a technology based on the creation of complex mathematical algorithms capable of simulating the physical and acoustical phenomena underlying the generation of sound in the pipe organ. It’s a completely different approach from common digital sound sampling because every single note, every chord, every slightest nuance of the performance is not the result of a simple “playback” of a sound but it stems from a sound generation process which operates fluidly in real time, just as it occurs organically and naturally in a physical instrument. The modeling algorithms that make Physis® organs so unique is the result of a monumental amount of work that now allows the creation of innovative and versatile instruments, redefining the state of the art.



Amplification RAR (Real Audio Rendering)

The detailed parameterization given by Physical Modelling, combined with the careful and lengthy work of components integration, has made the sound from the different speakers extremely natural.
The result is a warm and enveloping sound, as well as detailed and transparent. You are clearly able to hear the individual stops even after the instrument has been built up to full organ. In this latter challenge, the innovative front speakers play a primary role. The high sound quality and the precisely calculated position allow them to add significant detail to the sound of the organ, highlighting the dynamic evolution of each individual rank’s timbre.
The new Viscount RAR (Real Audio Rendering) technology represents a significant step forward in terms of definition, spatiality and body of the sound, which is the most authentic way yet to create that magical effect of the most important organ stop – ‘the ambience’. Sitting at the console of the new Ouverture, you will experience the most realistic impression of the instrument and its setting available from any digital organ you may care to play.

We have devoted special attention to the amplification system, in order to faithfully reproduce the impressive dynamics, the wide sound spectrum, and all the amazing spaciousness of the pipe organ sound.

In addition to the traditional amplification, we placed two pairs of full-range speakers at strategic points on the console: one pair on the outside panels and one pair on the top stop jamb panel. In this way, as the sound comes from different positions, it is possible to simulate the multiple reflections of the walls, ceiling and floor of a large reverberant space. The effect is quite startling. You will experience a difference just as significant as that achieved when you add a surround sound system to your home television.



“Tracker Touch” style keyboard 

Knowing the importance of the classic-organ keyboard, we’ve taken the utmost care in selecting the absolute best components. The mechanics of the keys gives the impression of a true “Tracker Action”, by obtaining the speed of actuation of the keys – making it possible to feel the “Tracker Touch” effect. i.e. the correlation between the “touch” of the organist and the transient attack of each virtual pipe.  The keyboard is not only comfortable and consistent to play, but also dynamically sensitive, which is useful for the MIDI and Orchestral sounds – but also essential to provide the “Tracker Touch” effect.



Complete Connections

A complete selection of external connections is smartly situated.

In addition to Standard connections (MIDI In, Out, Thru; Headphones, stereo inputs), there’s a microphone with gain control, 4 external multiple outs + Sub – with the option to expand these to 12+1(Sub). There are also USB host and Device connections.

For the USB Host connection, it’s possible to use a thumb drive to save and upload sound settings.

For the USB Device connection, you can connect to a PC to personalize all aspects of the organ. With the Optional “Physis Editor” for PC, you can modify every single register for every single note – including volume, pitch, spacial disposition – and many other parameters 



The registers are activated through elegant wood stops which have been placed laterally for the most precise and egonomic result: every level corresponds to a solo division of the organ for which the selection of the registers is simple and intuitive.

A rich selection of Orchestra voices are easily and quickly activated through dedicated pistons. Within the various controls, you’ll find tremolo specific for the register and “Voix Humaine”, which allows you to set very specific effects.



OUVERTURE has been will thought out so every organist will have an accurate study of the position of controls, with everything comfortable and easy to see both above and below.

The graphic display is well situated in a sliding drawer which maintains the classic aesthetic of the instrument.



Three Expression Pedals

The three expression pedals provide a fluid and precise movement – allowing complete control of the volume for Manual I, the volume for Manual III – as well as the Crescendo.






Soubasse 32'

Contrebasse 16'

Soubasse 16'

Grande Quinte 10 2/3'

Octave 8'

Bourdon 8'

Flûte 4'

Téorbe III rgs

Contra Bombarde 32'

Bombarde 16'

Trompette 8'

Clairon 4'


Quintaton 16'

Principal 8'

Flûte à Cheminée 8'

Salicional 8'

Prestant 4'

Flûte Ouverte 4'

Doublette 2'

Nasard 2 2/3'

Tierce 1 3/5'

Larigot 1 1/3'

Plein-jeu V rgs

Douçaine 16'

Cromorne 8'

Trompette 8'

Grand Orgue

Montre 16'

Montre 8'

Flûte Harmonique 8'

Bourdon 8'

Gambe 8'

Prestant 4'

Doublette 2'

Quinte 2 2/3'

Cornet V rgs

Fourniture IV rgs

Cymbale IV rgs

Bombarde 16'

Trompette 8'

Clairon 4'


Buordon 16'

Diapason 8'

Cor de Nuit 8'

Viole de Gambe 8'

Voix Céleste 8'

Octave 4'

Flûte Octaviante 4'

Octavin 2'

Nasard 2 2/3'

Carillon III rgs

Progress. Harmonique II-IV rgs

Basson 16'

Trompette Harmonique 8'

Basson Hautbois 8'

Vox Humaine 8'

Clairon Harmonique 4'


Flûte Majeure 8'

Flûte d' Orchestre 4'

Nasard Harmonique 2 2/3'

Octavin 2'

Tierce harmonique 1 3/5'

Septième Harmonique 1 1/7'

Piccolo Harmonique 1'

Aliquot IV rgs

Acuta IV rgs

Régale en Chamade 16'

Trompette en Chamade 8'

Clairon en Chamade 8'


OUVERTURE 468 FR - Alternative Voices.pdf

OUVERTURE 468 FR - Styles.pdf