Dear all,
I did a lot of research and contacted some people. I´ve found a Neumann document mentioning the DMT system. The DMT was developed in 1957 and the predecessor of the DST.
David, you were right it´s not a Mono system and I was wrong. It´s a Stereo system but the DMT is genuine...
Dear all,
I'm the seller of these cartridges and was not sure if it's worth to join the discussion. However, as it's not the truth, I decided to give a statement.
Let me tell you the history of the cartridges I sell. I had the opportunity to buy a convolute of cartridges from a retired...