2-3 Weeks. Get the classic sounds of Yamaha's renowned DX-7 synthesizer. The PLG150DX features the same 6-operator, 16-note polyphonic FM tone generation system that took the synthesizer industry by storm in the '80s. This outstanding plug-in board is capable of producing beautiful, ultra expressive electric pianos, punchy basses, dynamic leads and unusual sound effects – sounds for which FM synthesis is famous.