Sonus P235


The largest organ sound in an elegant Positive style cabinet with Physis technology®! Thanks to the sound coming from multiple sources, we can simulate multiple reflections of the walls, ceiling and floor of a large reverberant environment. The ‘Pipe-organ real audio rendering’ system (with 6.1 channels and 9 speakers) makes feel the organist at the center of the stage for a new and engaging sound experience.

product brochure
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The Sonus P235 is a two-manual organ with complete pedalboard and 35 register draw knobs, each of which can select hundreds of voices.

Available in wood finishes, the Sonus P235 is equipped 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 modelling technology, which reproduces the physical phenomena involved in the sound generation of the pipe organ, the Sonus P235 is capable of generating the highest-fidelity, most authentic church organ sound.

Parameter settings are easy to access, modify and store through the graphic display on the front panel.

The Sonus P235 uses a revolutionary 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 centre stage and involving him/her in an unforgettable sound experience – even from their living room or studio.



Manuals 2 x 61 keys "Tracker Action" keyboards, with velocity control for MIDI and Orchestra sections
Pedalboard 30 keys straight, straight concave or radiating concave
Stop Controls Drawknobs
Internal Amplification 7 Channels, 9 Speakers, 460 W Total (6 x 60 Watt + 1 x 100 Watt)
Expression Pedals 2


Organ Stops 35
Pedal 10
Great 12
Swell 13
Couplers 3
Tremulants 2, Programmable with independent Depth and Speed for each Organ Division and for Tremulant A and Tremulant B
Total Organ Voices > 460
Total Orchestral Voices >100
Orchestral Voices Stops 3
Styles 4 Preset + 4 editable User Styles. Hundreds Organ Styles can be loaded and/or stored from/to internal memory and Pen Drive
Temperaments 17
Ensemble Adjustable
Air Supply Emulator Adjustable


General Pistons 8
Total General Memories 128: 16*8 Banks
Piston Sequencer Previous, Next, Memory Bank-, Memory Bank+
Return to Handset Registration Yes
Tutti Programmable


Transposer -6/+5 semitones
Automatic Pedal Yes, Programmable as Automatic Piano or Pedal to Manual Mono Coupler
Enclosed Yes, Programmable for each section
Midi Trasmission Enable Yes, Independent for each Organ Section activable with thumb piston
Toe Pistons 5
Reverb 8 different venues emulator
Internal Amp EQ 5 bands digital Graphic EQ
MIDI Sequencer Interactive sequencer with Overdubbing function
Remote Control optional
Keyboard Inversion Yes
Organ Setup lock With Password
ON/OFF switch Switch


Line Outputs 4+1
Output Volume Control Adjustable, for each output
Voices Output Routing Programmable for each voices
Output EQ 5 bands digital Graphic EQ for each output


MIDI Interface In, Out and Thru
Stereo Headphone Output yes
Stereo Aux Input yes
Mic Input With rotative Gain Control
USB for Pen Drive Yes
USB for PC Yes


Cabinet Wooden Moldings
Bench With Music Storage shelf
Dimensions (WxHxD) cm 132,4 x 185,0 x 108,0 / 52,1'' x 72,8 '' x 42,51''
Colours and Finishes Light oak real wood veneer, Dark oak real wood veneer
Weight Kg 235 / Lbs 518




The buttons and draw knobs 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 with its own set of designated controls. The layout is smartly integrated with the instrument to allow unlimited possibility and personalization at the user’s fingertips.



“Tracker Touch” style keyboard 

Knowing the importance of the classic-organ keyboard, we have 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.



Powered by Physis®

Sonus sets a 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 is 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 modelling algorithms that make Physis® organs so unique is the result of a monumental amount of work that allows the creation of innovative and versatile instruments, redefining the state of the art.



Amplification RAR (Real Audio Rendering)

Starting with Physis® sound generation technology, we have designed a revolutionary audio system called RAR (Real Audio Rendering). The heart of the system is a powerful real-time sound processing algorithm that, in conjunction with four additional audio channels located at specific points on the console, is able to recreate with great accuracy the acoustic field produced by a real pipe organ in a large reverberant space. Thanks to RAR technology, you can totally manage the impression of three-dimensional space in which the instrument sits all the way up to a large cathedral setting. All this is possible without connecting any additional speakers. The versatility of Physis® technology, together with a painstaking study on the optimization of components, has allowed us to integrate the entire system inside the organ consoles, in an extremely compact design.

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.



Complete Connections

A complete selection of external connections is smartly situated.

In addition to Standard connections (MIDI In, Out, Thru; Headphones, stereo inputs), there is 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 is 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, spatial disposition – and many other parameters.



2 expression pedals

2 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 Pedal.


Introduction to Physis Voicing Flexibility

Modifying a Voicing Style

Physis Voicing Parameters

Tuning Options for Physis Organs

Advanced Tuning, Winding and Touch

Introduction to Audio System Setup

Using External Audio

Physis Technology - Behind the Scenes - part 1 - [HD]

Physis Technology - Behind the Scenes - part 2 - [HD]

Physis Technology - Behind the Scenes - part 3 - [HD]



“Physis-The Editor” is an excellent software tool for Physis Organs editing.
It allows the finest finishing and personalization like stop by se, or a DEMO version of the software package.
Who is interested in purchasing “Physis – The Editor” may request information (costs, how to get it) by sending an email to: or

Editor Version    O.S. Version

1.7.1         1.6.0 – 1.12.3
1.8.1         1.13.0 – 1.13.3
1.9.0        1.13.4
1.10.1                              1.14.0 – 1.14.5
1.10.2          1.14.6– 1.14.15
1.11.0           1.14.16 – and above


O.S. Current Release: 1.14.18

Before installing, please read carefully the update guide. WARNING: To install the currente release you must have already installed the 1.3.0 release or above. For assistance with the update package, contact customer service at

Notice: After the .ZIP file has been downloaded, extract the update .PHY file and copy it to the main folder (root) of a USB flash drive.




Untersatz 32′

Principalbass 16′

Subbass 16′

Octavbass 8′

Gedacktbass 8′

Choralbass 4′

Mixtur IV

Posaune 16′

Trompete 8′

Klarine 4′

Coupler I / P

Coupler II / P

Manual I

Bourdon 16′

Principal 8′

Rohrflöte 8′

Gemshorn 8′

Octave 4′

Blockflöte 4′

Quinte 2 2/3′

Superoctave 2′

Mixtur V

Cornett IV

Trompete 8′

Vox Humana 8′


Coupler II / I

Manual II

Gedackt 8′

Viola di Gamba 8′

Vox Celeste 8′

Octave 4′

Gedacktflöte 4′

Nasard 2 2/3′

Waldflöte 2′

Terz 1 3/5′

Scharff III

Fagott 16′

Trompette Harmonique 8′

Oboe 8′

Clairon 4′


SONUS P235 EU STANDARD – Alternative Voices.pdf

SONUS P235 EU STANDARD – Styles.pdf