Do you love elaborate arrangements?

No problem on the OAX800LS! Up to 16 sounds of the Advanced Sound System can be played simultaneously on the manuals. For each instrument you can make a wide variety of playing settings, including individual effects such as chorus, distortion, wah-wah, etc. This allows you to conjure up the most versatile arrangements in no time at all, which you can then save in thousands of Total Presets (complete settings for the entire organ) and conjure them up again “at the touch of a button” if required.

High quality keyboards

The two high-quality, weighted manuals of the OAX800LS naturally feature touch response and aftertouch. A special feature in this class is that both manuals have 76 keys. This allows you to make even better use of the sound possibilities, especially with a split keyboard, or to play the piano with both hands to perfection. The excellently playable 25-key full pedal also allows you to interpret classical organ literature on the OAX800LS.

Integrated speaker system

The OAX800LS is equipped with a high-quality speaker system. For perfect sound, 2 x 100 watts in the lower part provide the bass and mid-range sound and 2 x 60 watts in the upper part provide the treble. The sound will inspire you!

25-key pedal, pistons and speakers

More drawbars

Large bench seat

Overview of all OAX800LS features


An idea with a future:
Full software control of all functions and sounds, constant further development of the entire system, updates via download possible – the times when every change required complex and expensive hardware modifications are now a thing of the past

No limits:
Both manuals have 76 keys. So there are no limits to your musical ideas.

More highlights:

  • Complete OAX operating system
  • High-quality, lightly weighted FATAR keyboards, both manuals with 76 keys, velocity and Channel Aftertouch
  • Advanced control panel functions
  • 25-key pedal with velocity sensitive touch
  • 5 pistons and 2 foot switches on the swell pedal
  • 13.2″ Color Multitouch Display
  • 9-way upper manual drawbar, 9-way percussion drawbar and 9-way lower manual drawbar
  • 16-fold drawbar set for volume
  • 10 effect sound buttons
  • Including matching large bench seat
  • Colours: High gloss black, mother of pearl white, brown metallic, others on request, or fine veneers walnut, rosewood, mahogany
  • Integrated sound system with 2 x 60 Watt for the treble in the upper part and 2 x 100 Watt for the bass and midrange sound in the lower part

Tone colours:
2000 factory sounds and 57 drum sets for all musical styles

Church organ:
Historical church organ built by the master organ builder Gottfried Silbermann (1683-1753).

Sound productions:
Sampling, wavetable synthesis, FM synthesis, analog synthesis

theoretically unlimited, only limited by CPU power

Sound controls:
Six Easy-Sound-Controls per sound-> Equalizer, Echo, Sample Start Point, Attack, Release, Vibrato, Filter and much more

Wersi OAX7 and VB3 organ software simulations of the highest quality, firmly integrated, controllable via real drawbars

Four send effects with reverb 1, reverb 2, chorus and delay; further effects individually programmed in the sounds.

EASY mode:
Three sounds each on the upper and lower manual and one pedal sound

PROFI mode:
Up to 16 sounds can be distributed among the manuals. Maximum of 12 voices each for the upper or lower manual.

Effect Sounds:
Ten effect sound buttons to play effects such as crash cymbal or vocal effects.

Music Archive:
The Music Archive is a list of Total Presets, in which the right sounds and style with the right tempo are stored for a specific song. The Music Archive is divided into the sections WORLD with 600 titles and GERMAN with 300 titles. In the OWN section you can add your own favourite titles to the Music Archiv.

Factory Total Presets:
The permanently stored factory total presets show the sonic possibilities

Own total presets:
5000 own Total Presets can be stored

Playing areas/split points:
For each sound an individual playing area can be assigned to the manuals – this way complex sound worlds can be composed

One Style, MIDI sequence or MultiMedia file each can be saved in the Total Preset with individual settings

Individual settings for the four send effects

Foot switch assignments, effect sound assignments, notes, drawbar settings, tempo, transpose

Style player:
370 factory styles, 150 of them with Live Realdrums

STS presets:
Four STS presets are stored for each of the 370 Factory Styles. Select a style and play directly with the STS presets to create the right sounds

Harmony recognition:
One-Finger-WERSI, Easy Mode 1 and 2, Chord-Mode, Chord-Mode with Bass, Interval-Mode, Organist-Mode, Pedal-Mode, Piano-Mode

Convert Styles:
Your OAX instrument directly loads the older styles of the OAS series, styles of other manufacturers can be converted with paid extensions.

MIDI player:
Plays General MIDI sequences; volume levels of the 16 channels can be stored in Total Presets

Multimedia player:
Updated Multimedia Player plays all common audio formats

ACC database:
Style/MIDI/Mp3/Wave database with management function of up to 5000 own files

Audio recording:
With the audio recording you can directly record your performance and save it in wave format

13.3″ Color Multitouch Display in 16:9 cinema format (resolution 1366 x 768)

High quality, lightly weighted FATAR keyboards, both manuals with 76 keys, velocity and Channel Aftertouch

Manual dynamics:
Freely programmable dynamic curves, individual assignment to all manual sounds possible

Bass pedal:
25-button full pedal with touch dynamics

Pitch Bend and Modulation Wheel

Foot switch:
5 pistons and 2 footswitches on the swell pedal, all freely assignable and individually storable per Total Preset

Swell curve per manual sound and accompagnement freely programmable

Control panels:
Clearly arranged control panel with high-quality push buttons

Organ drawbars:
9 upper and lower manual drawbars and 9 percussion drawbars

Functional drawbar:
Freely configurable drawbar “CC” for controlling special functions, organ drawbar can also be used for data input

Display languages:
German, English, French and Dutch

VST 3.0 Host:

Total number of plugins:
with up to 16 VST Instruments and 16 VST Effects (partly preset with factory plug-ins)

Signal paths can be routed in the VST Host as required

VST presets:
Several VST configurations can be stored

Input mixer:
Separate sections for the manuals and accompaniment sound, drums and RealDrums, each with its own equalizer. The Line-In and Wave inputs for playing audio files each have their own equalizer, send and insert effects. The microphone input is equipped with two send effects, an insert effect and a talk function.

Output mixer:
With separate volume and EQ settings for Line Out 1, 2 and headphones

Separate presets can be stored for the input and output mixer

Central electronics:
Modern motherboard with i7 processor

RAM memory:
16 GB RAM (of which 8 GB can be used for your own samples), optionally up to a maximum of 32 GB RAM

Hard disk space:
Super fast M.2 SSD hard disk with 250 GigaByte guarantees shortest loading times

Other storage media:
DVD or optionally Blu-ray

Operating system:
Windows 10 64 bit

4 x USB 2.0 on the front, further USB 3.0 on the back

6,3mm stereo jack

1 x High End microphone preamplifier incl. phantom power (XLR/jack combo socket)

HDMI Video Output

Audio inputs:
1 x Line-IN stereo right/left (XLR/jack combo jack)

Audio outputs:
2 x Line-OUT Stereo right/left (jack)


MIDI over USB function for direct connection to PC and Mac

Available in high quality lacquering in the following colours:

  • Black Metallic
  • White High gloss
  • Brown Metallic
  • other colours on request
  • or fine veneers walnut, rosewood, mahogany

Width x height x depth: 1340 x 1090 x 11150 mm

115 kg incl. 25 key pedal and organ bench

Inquire about the status of the current equipment before buying.