Amp or cd player to pair with the Apogee Stage ?

I'm using a Krell integrated amp with the Apogee Stage speakers right now. It certainly sounds nice when paired with my tube phono stage and decked out VPI Scoutmaster turntable but somewhat hi-fi (ish) when playing cd's with a Krell 300 solid state cd player. The Cardas Golden Reference interconnects and Audience AU24 speaker cables helped to banish the electronic overlay but not completely. Maybe instead of changing out the amplifier I should look into a tube cd player? Any thoughts on this or on whether a Krell 150 watt integrated is a suitable amp for driving the Stage speakers?