Infrequent Sound [sex.tex] technology: Elka MK55 Master Keyboard Controller [Restoration & Repair], 1988, made in Italy

Link: muzines | muzines | Owner's Manual [PDF, eng]

8 response characteristics, routable to one of 9 different functions.
19 different dynamics response curves (graphically depicted on the front panel)

SPECIFICATION
KEYBOARD : 61 note
PROGRAMMABLE PERFORMANCE PRESETS : 128, divided into 8 banks of 16 (4 Internal, 4 RAM Cartridge).
PERFORMANCE PRESET MEMORY : Split Settings, Transpose, MIDI Channels, Velocity and Aftertouch Functions, Real Time Control Assignments, MIDI Delay or Echo, Loop, MIDI Clock, Name, Tempo, External Splits 5/6, Chain, MIDI Patch.
MIDI PATCH : A 'System Set Up' Memory with 12 - programmable slots.
HIGH RESOLUTION DYNAMICS : 19 different velocity response curves.
POLYPHONIC AFTERTOUCH : 8 response characteristics, routable to one of 9 different functions.
SPLIT ZONES : 6 freely-definable variable keyboard zones (overlapping permitted). Functions can be programmed differently in each Split Zone.
FREE : 8 fully programmable, storable commands in each Bank (with 8 Banks).
MIDI CLOCK : Internal sync or External.
MIDI OUT : 2 paired, completely independent Outputs (16 channels on each)
MIDI IN : External Clock Input or External Instrument.
CONTROLLERS : 2 Wheels, 3 Sliders, 4 Function Keys, 2 Pedals, 2 Footswitches. All programmable and assignable to Tempo, Start/Stop and Continue, any Real Time Controls.
DISPLAY : Illuminated 32-character LCD.

Механика клавиш для Elka заимствованный из технологий конца 60хх годов, так повсеместно использованных в электроорганах Elka, Gem, Elgam, EKO, Universum и др.