Klauss, a list of cartridge's that match up with the specs. of the Tempest would be very helpful. How far can you vary from the specs of the Tempest and the specs of a cartridge, for example the tempest phono stage is listed at 47K, how far from this can you stray with the cartridge specs. i.e. 30K ? How do you change the cartidge loading loading on the Tempest or are you confined to a smaller number of cartridges that are compatible? Thanks in advance.