Yeah, Judith -- I think you may need to test the analog waters. One pretty simple way you can rule out room interactions is to listen to the music via a decent pair of headphones. Heck, even a cheap pair of Grado SR 60's will tell you what you want to know. If the piano still sounds a bit odd through competent headphones, then you will know it's your source (especially if you use the CD player's headphone jack, if one is present).
Of the three sources I use for reference, I'd have to say my least expensive source (Teac X-700R reel to reel recorder) sounds the most natural and true to the music. This would be followed closely by my Michell turntable and my CD playback system in that order. The old reel to reel exhibits the most background noise (sans its noise reduction) but the timbre and harmonic structure is exceedingly true-to-life. The CD playback gear is dead quiet and very dynamic, yet compared to good analog, the authenticity of the various instruments is not quite "there". But it sounds close enough if one only listens to CDs, without a direct comparison to credible analog... Actually my digital gear does piano quite well since the latest DAC mods and the performance gap between my three sources is surprisingly narrow (yet clearcut). Also, the more resolution your system has, the more apparent/glaring any imperfections will be.
Of the three sources I use for reference, I'd have to say my least expensive source (Teac X-700R reel to reel recorder) sounds the most natural and true to the music. This would be followed closely by my Michell turntable and my CD playback system in that order. The old reel to reel exhibits the most background noise (sans its noise reduction) but the timbre and harmonic structure is exceedingly true-to-life. The CD playback gear is dead quiet and very dynamic, yet compared to good analog, the authenticity of the various instruments is not quite "there". But it sounds close enough if one only listens to CDs, without a direct comparison to credible analog... Actually my digital gear does piano quite well since the latest DAC mods and the performance gap between my three sources is surprisingly narrow (yet clearcut). Also, the more resolution your system has, the more apparent/glaring any imperfections will be.