FUNs are available per layer and FUNs can be assigned as inputs to other FUNs. The Kurzweil evaluates the FUNs sequentially, hence for this to work you would want to assign FUN1 as an input to FUN2, but not vice versa. A program can be set to run in "global" mode as well. In this mode, certain modulation sources can affect all layers in a program instead of just affecting the current layer. Among other effects, in "global" mode the global LFO will always be running, instead of starting when a key is pressed. The behavior of other global modulation sources may also change in this mode. V.A.S.T. includes a number of control sources. There are two LFOs ("LFO1" and "LFO2") with a user-assignable wave shape and frequency modulation source. "AMPENV" is the main ADSR (attack-decay-sustain-release) control source for the final amplifier in a layer and has multiple attack, decay, and release segments. "ENV1" and "ENV2" are bipolar envelopes, and "ASR1" and "ASR2" are two more unipolar envelopes. All of these can be set to loop for a fixed or infinite number of cycles, and the loop start and end points can be set to different stages of the envelopes. Also include are several random-number generators, clocks based on the internal or external MIDI master clock, key and note state, mono and polyphonic aftertouch, etc. A complete list of these can be found in section 25 of the K2000 user manual. Features and specifications Expansion options Sampling A/D input & digital I/O Orchestral and/or Contemporary PCM ROM blocks P-RAM Program memory expansion Sample RAM up to 64MB (30-pin SIMMs) Internal hard drive Models K2000 - Original keyboard version with a total of six audio outputs, configured as a main stereo pair and four assignable outputs. K2000R - Rackmount version of the K2000 with a total of ten audio outputs, configured as a main stereo pair and eight assignable outputs. The K2000R can accept the same P/RAM and ROM sound cards as the keyboard, although a different option board is required to add sampling capabilities. K2000S and K2000RS - Same as the standard keyboard and rackmount versions, but also shipped with the sampling option and 2Mb of sample RAM from the factory. K2vx (US $3,495) - A fully-optioned version of the K2000 keyboard which included an expanded ROM sample set (incorporating the Orchestral and Contemporary ROM blocks) made up of 24