A lot of tube units are basically tube MM stages with a SUT used to provide the higher gain needed for LOMC. Exceptions, like the Aesthetix Io, have a whole lot of tubes to provide more the extra gain through active stages.
I like tube stages with SUT, provided that the transformer is really good. The Kondo is a good example. I think the SUT in the Audionote (uk) units are really terrific too. One can actually buy their transformers separately, though the top model is extremely pricey. I heard a custom-made stage using their best transformer and it is amazing.
I like tube stages with SUT, provided that the transformer is really good. The Kondo is a good example. I think the SUT in the Audionote (uk) units are really terrific too. One can actually buy their transformers separately, though the top model is extremely pricey. I heard a custom-made stage using their best transformer and it is amazing.