Will Musical Fidelity A3cr work with Power Plant P300?


I read a review that the you can use the MF A3cr amp with the Power Plant 300. I am considering a Power Plant and thought I would need the P600 since the MF specs list its maximum draw at 600 watts.
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It'll work but with blacker background but with decreased dynamics since P300 isn't capable to deliver 100% of wall power.
Thanks Detlof and Marakanetz,I suppose it was wishfull thinking. Maybe I'll get a P300 for source components and plug the amp straight into the wall or look for a used P600 to power everything.
I have had a P-300 for many years and never ran my amp through it. Source components only.