clearaudio reference phono preamplifer is good?

i want to buy a big phono preamplifier, i have a garrard 401 turntable, sme 309 tonearm, at-oc9 cartridge, krell kpe phono pre, mark levinson 28 pre, krell ksa50-s amplifier, i loved the jazz,rock, classic, all the music, i want to buy a clearaudio reference phono preamplifer is really good?. My intention is conect the clearaudio to krell 50s.