Both the Ketron SD40 and SD90 modules have a 3-part vocalizer built-in, with XLR / 1/4-inch microphone input jack, so you do not need to buy an outboard VH.

My Ketron SD90 module (8 lb) / Casio Privia PX560M 88-key hammer action digital stage piano (26 lb) setup just needs a MIDI cable, a sustain pedal, and a keyboard stand with adjustable width of the second tier like the US$105 Double Piano Keyboard and Laptop Stand by Griffin (https://www.amazon.com/gp/product/B004THB8OW/ref=oh_aui_search_detailpage?ie=UTF8&psc=1).

You can go with a single-tier keyboard stand, with a laptop stand behind the keyboard to hold the module above the keyboard.

The K&M single-tier baby Spider Pro keyboard stand with its matching laptop rest looks the best but on the expensive side.


Thanks,
Paul