The part of the synthesizer that amplifies the sound that is generated by the oscillator. It normally has a control input which affects the level of amplification and which is normally be driven by an envelope or an LFO....
Matrix-6
This synthesizer was based on the popular Matrix line. The Matrix-6 is basically a
stripped down Xpander with a 5-octave, 31-note (C-C) keyboard, which features on and
off velocity, as well as channel aftertouch. It features 6-note polyphony and pitch and
modulation levers (not wheels) to the left of the keyboard. Each voice has two DCOs (as
opposed to the Xpander's VCO), a VCF, three envelope generators (5 stage: Delay,
Attack, Decay, Sustain, Release), two ramp generators (simple envelopes), tracking
(not just for the keyboard but for remapping any modulation source), portamento and
FM controls, three LFOs, and two VCAs. Along with other "Matrix" products from
Oberheim, the Matrix-6 features what Oberheim called, "Matix Modulation System",
which makes for very flexible and powerful modulation programming. With this much
programmability it is unfortunate that the only user interface is a single slider and a
keypad.