Luxman, Marantz or Naim for Harbeth Compact 7

I’ve owned multiple Luxman amps (509X, MQ88uSE, M900u) and Naim (Atom, Nova, Supernait 3) AND Harbeth C7 (40th anniversary) and it really depends on the sound signature you prefer. The Luxman will be clean, powerful, detailed with a bit of sweetness on the top end. The Naim will be a bit less refined but more propulsive and will sound better across a wider variety of genres. 

Both amps pair excellently with the Harbeths. 

None of them. Accuphase. 

Thanks.  I considered Accuphase but it was out of my price range and my local dealer said the E300 won't be available until January.

Look for a used Accuphase E280 or E260 - superb!   I have an Accuphase E260 powering Harbeth C7s - sublime!

When I had my Harbeth C7ES3 I enjoyed them most with a Rogue Audio Cronus Magnum.  Liquid sound and an atmospheric sound stage with excellent punch and dynamics.  Note- KT120 tubes are needed.