Just a thought. If you use a SUT, that should protect the Allaerts from DC coming back from the phono stage. In an SE phono stage, the cartridge is wired between the grid of the input tube (or the gate of the transistor) and ground. Don't know about SS, but there will always be a small DC voltage differential between the grid and ground in a tube preamp. How much DC is considered to be a danger to the Allaerts coils? Most LOMCs have very delicate coils, and I have never heard of such a problem with any of them.
