Leslie extension unit that allows up to 4 Leslie’s to be connected at once! Imagine that.. if you’re lucky enough to have an extra leslie speaker or 3 it’s quite luxurious and an amazing experience.. iv had my c3 linked up to a 145 and 147 and it’s a wonderful sound.extremely rare piece of kit.. has uk mains plug.. perfect working order. This is compatible with the Hammond c3/b3 and any other organs that utilise the same outputs.