The instrument
The Synther 2000, introduced in 1973, was the first synthesizer from the Italian company FBT Electronica S.P.A.. Only a small number of units are made. Later on the same company would introduce the Synther 4000.
Details
The Synther 2000 is a monophonic synth equipped with three VCOs (each with square and saw-tooth waveform generation) and based on the substractive synthesis method. It has also two simple filter & envelope sections. The filtering section is composed of a single filter with cutoff, a level control for each oscillator, and keyboard control, whilst the envelope control allows three different setups: AD (Attack/Decay), A (single Attack) and a continuous attack (a rudimentary arpeggiator). It is also equipped with a noise generator for oscillators 2 and 3.
The keyboard has 37 keys, but does not have pitch bend and modulation wheels. Instead, it has a slider for the continuous control of oscillator-1 frequency. It also possesses a sweep control that is very similar to the classic portamento effect. (Source: synth-db)