Viscount International: the Art of Sound!

Unico CLV4

Ideal instrument for practicing and teaching, both at home or in music schools. Light and easy, it charms with its high flexibility, and the sound elegance
of the Physis® technology.
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The CL 4 is a two-manual compact organ, 30-note pedalboard and 35 registers, with a real-wood console (or laminate in the case of CLV 4) with roll-top key cover. Ideal for the student or for the small church, it has a huge library of internal registers through which the user can easily customize  the instrument.

Developed with award-winning and patented Physis® physical modeling technology, which reproduces the physical phenomena involved in the sound generation of the pipe organ, the CL 4 is capable of generating high-fidelity sound while providing ultimate flexibility in molding personal sound preference. Parameter settings are easily to access, modify and store through the display on the side panel. The "Action Tracker" 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.



_____SPECIFICATIONS (Available=●)


Manuals 2 x 61 note "tracker touch" keyboards, with velocity control for MIDI and Orchestra sections.
Pedalboard notes 30 note straight, straight concave, radiating concave
Register Control Tilt Tab
Internal Amplification 2 x 60 Watt + 1 x 100 Watt
Speakers 5
Expression Pedals 2


Pedal 10
Great 12
Swell 13
Orchestral Selector  3
Total Orchestral Voices < 100
Total Classic Voices < 460
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 Yes


Automatic Pedal Yes
Enclosed Piston Yes
Couplers 3
Mixture I,II Yes
Transposer -6/+5
General and Reverb Volume With rotary potentiometers
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
Tremulant 2, Separately for each manuals depth and speed adjustable
Reverb 8 Types
Adjustable Ensemble Effect Adjustable
Air Pressure Effect Proportional to the active Voices
Tracker keyboard Effect Yes
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
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
Demo Songs Yes
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 4+1, (12+1 when replacing standard output board with optional expansion board)
USB to HOST For finest finishing and personalization like Stop by Stop, Note by Note Volume and Pitch Regulation, Stop disposition, Internal and External Routing, etc. (optional)
Dimensions (WxHxD) cm 126,6 x 114,5 x 111 - 49.84" x 45.07" x 43,70" (with 30 notes radiating concave pedalboard)
Dimensions without music desk and pedalboard (WxHxD) cm 126,6 x 114,5 x 62,3 - 49.84" x 45.07" x 24.52"


Cabinet Features Elegant wooden console in dark, medium or light oak, elegant wooden lighted music rack, roll cover and matching bench
Colours / Finishes Light oak simulated wood, Dark oak simulated wood
Weight kg 121 / Lbs 266,75




Sound Generation

Powered by Physis ®

Physis® Physical modeling is what makes these organs so unique. This technology involved an enormous amount of research and development – and the result is truly innovative instruments which redefine “state of the art”. The sound generation in the entire Unico series uses  Physis® technology - which builds sound through modeling technology – NOT storing samples like the 20+ year old technologies of our competitors. Physical modeling rebuilds all the elements of sound through complex algorithms – right down to the smallest imperfections. These are the ingredients which give the original instrument its character and warmth. Physis® technology reproduces the sound in REAL TIME just like it was created through a windblown pipe organ – with each sound having it’s own unique character. There are no ‘breaks’ and ‘split-points’ as you find in sampling, so the progression of the sound across the keyboard is accurate, smooth and natural. The development and refinement of the algorithms in physical modeling help make Physis organs the best in the world – and a new definition of ‘state-of-the-art’!



“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 situtated. 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.


User Interface

The knobs, tabs, pistons and display provide super efficient control of the entire instrument.

The Buttons and tabs to turn registers on and off, the pistons and all the other commands are ergonomically designed to respond quickly and easily to the demands of the user. The display is conveniently located on the side panel (in the center of the CLV 7, Unico 300, 400, 500, 700, and in a sliding drawer for the Unico 800) with it’s own set of designated controls. The layout is smartly integrated with the instrument to allow unlimited possbility and personalization at the user’s fingertips.



Two Expression Pedals

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






Contra Violon 32'

Prinzipal Bass 16'

Subbass 16'

Violone 16'

Oktav Bass 8'

Gedackt 8'

Choral Bass 4'

Contra Bombarde 32'

Posaune 16'

Trompete 8'

Coupler I / P

Coupler II / P

Manual I

Bourdon 16'

Prinzipal 8'

Hohlflöte 8'

Unda Maris 8'

Oktave 4'

Spitzflöte 4'

Super Oktave 2'

Kornett IV

Mixtur V

Contra Trompete 8'

Krumm Horn 8'


Coupler II / I

Manual II

Rohr- gedackt 8'

Viola di Gamba 8'

Vox Celeste 8'

Prinzipal 4'

Rohrflöte 4'

Nasard 2 2/3'

Blockflöte 2'

Terz 1 3/5'

Scharf III

Fagott 16'

Oboe 8'

Vox Humana 8'

Clarion 4'



UNICO CL4 EU STANDARD - Alternative Voices.pdf




Bourdon 32’

Flûte ouverte 16’

Soubasse 16’

Flûte 8’

Flûte 4’

Flûte 2’

Contre Basson 32’

Bombarde 16’

Trompette 8’

Clairon 4’

Accoupl. I/P

Accoupl. II/P

Grand Orgue

Montre 16’

Montre 8’

Flûte harmonique 8’

Bourdon 8’

Prestant 4’

Doublette 2’

Piccolo 1’

Cornet II-V

Fourniture IV

Ranquette 16’

Trompette 8’

Cromorne 8’


Accoupl. II/I


Flûte à Cheminée 8’

Viole de Gambe 8’

Voix Céleste 8’

Flûte à fuseau 4’

Nasard 2 2/3’

Flûte conique 2’

Tierce 1 3/5’

Larigot 1 1/3’

Plein Jeu harmonique III-VI

Bombarde 16’

Trompette harmonique 8’

Basson-Hautbois 8’

Voix humaine 8’



UNICO CL4 FR STANDARD - Alternative Voices.pdf




Untersatz 32’

Prinzipalbass 16’

Kontrabass 16’

Subbass 16’

Oktavbass 8’

Gemshorn 8’

Choralbass 4’

Mixtur IV

Posaune 16’

Trompete 8’

Koppel Hw/Ped

Koppel Sw/Ped


Gemshorn 16’

Prinzipal 8’

Holz?öte 8’

Salizional 8’

Oktave 4’

Querflöte 4’

Quinte 2 2/3

Superoktave 2’

Kornett V

Mixtur V

Trompete 8’

Clairon 4’


Koppel Sw/Hw


Flötenprinzipal 8’

Gedackt 8'

Gamba 8’

Vox Coelestis 8’

Weitoktave 4’

Rohrflöte 4’

Quintflöte 2 2/3’

Waldflöte 2’

Terzflöte 1 3/5’

Scharf IV

Fagott 16’

Trompete 8'

Oboe 8’’



UNICO CL4 DE STANDARD - Alternative Voices.pdf




Contra Bourdon 32'

Prestant 16'

Subbass 16’

Prestant 8'

Gedekt 8'

Koraalbas 4'

Ruispijp III

Bombarde 32’

Bazuin 16’

Trompet 8’

Koppler I/P

Koppler II/P


Prestant 16'

Prestant 8'

Roerfluit 8'

Quintadeen 8'

Octaaf 4'

Quint 2 2/3'

Octaaf 2'

Spitsfluit 2'

Cornet V

Mixtuur IV

Trompet 16’

Trompet 8’


Koppler II/I


Bourdon 16'

Viola di Gamba 8’

Vox Celeste 8’

Octaaf 4’

Koppelfluit 4'

Quintfluit 2 2/3'

Nachthoorn 2'

Terts 1 3/5’

Scherp III

Basson 16’

Dulciaan 8’

Vox Humana 8’



UNICO CL4 NL STANDARD - Alternative Voices.pdf




Contra Basso 16’

Bordone 16’

Violone 16’

Ottava 8’

Bordone 8’

Basso Corale 4’

Ripieno 4f.

Trombone 16’

Tromba 8’

Clarone 4’


Unione I/P

Unione II/P


Principale 16’

Principale 8’

Flauto Aperto 8’

Ottava 4’

Flauto a Cuspide 4’

XII 2 2/3’

XV 2’

Ripieno 4f.

Cornetto 3f.

Voce Umana 8’

Tromba 8’

Cromorno 8’



Unione II/I


Principale Violino 8’

Bordone 8’

Gamba 8’

Principalino 4’

Flauto a Camino 4’

Nazardo 2 2/3’

Flautino 2’

Decimino 1 3/5’

Cimbalo 3f.

Voce Celeste 8’

Fagotto 16’

Tromba Armonica 8’

Oboe 8’

Campane Tubolari



UNICO CL4 IT STANDARD - Alternative Voices.pdf