Up to 64 digital channel. Love this interface, just have new generation. The item "Antelope Audio Orion 32 USB/MADI" is in sale since Thursday, July 22, 2021. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Audio/MIDI Interfaces". The seller is "rark2342" and is located in Van Nuys, California.This item can be shipped worldwide.