The sound system is the same on all the instruments, (Arrangers and Organs) with variations being keyboard combinations, speaker systems etc.
The instrument being used is a converted Spectra (Pretty much all Wersi instruments built since 1984 can be updated to an OAS instrument) and is the equivalent of the Verona, with 2 61 note manuals and a 25 note full pedal board.
Arranger keyboards start with the 76 note Ikarus and 61 note Abacus.
Regards

Bill


[This message has been edited by abacus (edited 04-07-2008).]