You're confused by some techobabble terminology. VSTi and VST and DXi and DX. The i stands for instrument. If it's just VST or DX, no i, it's an effects plugin not an instrument. Don't confuse the two, the VSTi is your synth plugin the VST is for effects and those four slots are for effects only. That means you can chain up to four effects per track which is very useful. Typical would be reverb, EQ and a compressor/limiter.

Bob


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