harrylavo is most likely referring to the Music Reference (rather than Musical Reference) RM-9 amplifier, a very-well regarded EL34 based amp. Roger Modjeski of Music Reference is making custom pre-amps now, so you might want to check with him to see what he's offering.
Are there any $1500 tube preamps that that can compare with Tubes4hifi's SP14?
Reviews on the Tubes4hifi's SP14 are consistently positive and so many people are blown away by them. I haven't heard one but I want one. I want to upgrade and would like to know if there other ones that can hold up against the SP14 at the $1500 price point.