The SLP-98, even hot-rodded, is not a highly resolving preamp, so if ultimate fidelity and resolution is a priority, look elsewhere. That said, it is very musical and soulful, especially in its F1 version with the right tubes, albeit a bit dark. As a classic tube preamp, if you like bloom and soul at the expense of painting crystal clear pictures of the space and soundstage, it might be worth considering.
IMO there are better preamps to be had.