Before we make any suggestions, you may want to tell us the rest of your system, including brands/models of source, current preamplifier, amplifier(s), and speakers. . . what genres of music you enjoy listening, what sound your system is producing, and in what direction you would like the sound to change from here. . . I have certain definite preferences in pres within the KX-R pricepoint, but they may or may not match the sound you are looking for.
Best, Guido
Best, Guido