I just replaced Krell FPB200-C/KCT with Spectral DMA-150 series II amp and DMC-30 preamp. I'm using W/P 7.0s. The difference is truly amazing. IMHO, the Spectral gear is in a totally different league to the Krell
There are too many unknowns for me to answer your question in any way that is likely to be useful to you. Listening room size, acoustics, types of music and maximum listening volume are all critical to presenting any informed suggestions.
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