I have recently moved on from a Merdian G61 plus Marantz multichannel power amplifier to the new Arcam AVR550. I don't have any ceiling speakers installed (yet) but instantly considered the change to be an improvement for both stereo and multichannel (7.1) listening. I do miss Trifield for some material. I haven't yet tried the Dirac room correction built into the Arcam (my sub is room-corrected already). I have an MS600 connected via analogue into the Arcam for Sooloos/Roon, so I am still in the M fold, plus I have a pair of DSP5200SL/MS200 in another room.

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