Again the topic of weight of amps

Class D - just like most Class A & AB tube amps are really dependent upon good circuit design, quality parts and implementation. There are some that sound very ordinary and others that sound fantastic. Never rely on the words of paid reviewers to determine which are which. Audition is the only way to tell for yourself... and feedback from trusted users here in this forum can be an invaluable tool as well. But the truth is some designers just get it and their products are better than others. Seek out the products from designers who have proven track records of accomplishment in the Audio field. 
I have been listening to a Class D amp for 5 years now and have been extremely satisfied. But mine amp is also the product of a designer who has decades of experience and is himself a true music lover with an ear for real sound. 

Point being - don’t discount a properly designed Class D option. 

I built my amplifier system with a separate power supply and separate monoblock final stages with big radio station transmitting tubes and a separate SET with its own separate power supply and, of course a separate preamplifier. If I had built it into one cabinet I could never manage the weight of it all even with my years of amateur bodybuilding. In addition, if something needs to be repaired or I figure out an improvement in the design, it is much easier to take out one chassis and fix it.

When you're in a small city apartment you are sometimes moving things around and cleaning(dust dust dust) you've got this humungous thing just sitting there. No matter how splendid it sounds it's just plain awkward. I remember when somebody asked generally what most one wanted for their system and somebody replied 'a bigger room.'

I have mono amps that weigh a ton.  If space is the issue, new class D like Bel Canto Ref 600m with a good tube buffer will give you excellent results.

I bought an EAR 890 amp in 2006 and used it with an EAR 864 for a two years.  It sounded forward and bright on my Legacy Focus speakers.  With a custom high end pre-amp the 890 was rather thin sounding.  I replaced the pre-amp as well.  I moved the 890 to my Legacy Signature IIIs.  This was a great match.  The probable reason-the Class A 890 doesn't control 6 - 12" woofers very well but has no problem with a 1 ohm higher bass rated speaker with 6 - 10" woofers.  Matching the amp to the speakers is critical for most tube amps.  

My future may include an RM-200 MK11 or a VAC 200IQ.  Depends on my future speaker (Vimberg Tonda, Von Schwiekert VR-55, Lumenwhite Kyara).