Module is available as a DIY project only.
This Module is currently available.
PT2399 Karaoke Delay DIY module
Karaoke delay made with Pusherman PCB panel for the Mike Eckert designed 卡拉OK! Delay which uses a chinese 'reverb' board from ebay.
http://vi.raptor.ebaydesc.com/ws/eBayISAPI.dll?ViewItemDescV4&item=322619224027&category=14970&pm=1&ds=0&t=1547955418000&ver=0&cspheader=1
Included in 30 Racks, 8 are public: