Why can't I find one of these? I want to run a couple 8 ohm cabs in my vintage SVT and they only have single inputs, so I need a Y adapter to daisy chain them together. Can't find any, though. All I can find are shielded Y adapters. If I can't find unshielded, would it cause problems to use a shielded Y adapter cable? For those keeping score, it needs to be mono 1/4" male to mono 1/4" females.