Just a note: Changing to a solid-state preamp will not improve your warm-up time situation unless you leave it permanently on or it incorporates a stand-by mode. Fortunately, this is easy and common to do with SS pre's, since there aren't any tubes to wear out more quickly. But from a 'cold' start, the SS pre will actually take much longer to come up to 'best sound' operating condition than will a tube preamp.