Is my new amp TOO GOOD?

What’s the source?   If phono make sure everything is set up right with a good matched cartridge and stylus not worn or damaged. 
 

In any case, phono or digital, make sure each devices output level matches properly to the input sensitivity of the next device upstream.  Input/output levels may be adjustable in some cases, a very nice feature whenever mixing and matching components. 
 

Oh and never forget to check all connections. All it takes is one bad one to destroy the sound quality. 
 

It also helps to swap 1 piece of gear in and out as a test to help isolate a problem.  That’s why I’d recommend always keeping spares around if at all possible.  

I have a suggestion,  buy an Accuphase 😁 just kidding. 

I had a McIntosh MA12000 integrated amplifier and it took forever to break-in. It started out sounding harsh, edgey and muddy, thete was no telling what was going on.  But when it broke-in it was fantastic!  I also remembered repositioning my spkrs several times to get the sound right.  Cables make a huge difference.  EQ on McIntosh is fantastic so experiment.  

When I was considering a move to the McIntosh MC462, my dealer, who is virtually around the corner from the factory and has been doing this a long time, cautioned me that the MC462 is a departure from older Mac amps.  Although not quite as warm sounding as its predecessors, it provides detail and layers that the previous iterations don't offer.  Break-in for that amp is very real and requires patience, and it is a very good match with my Sonus Faber speakers. 

I had a Mac C53 preamp for a while and it was a disappointment.  There are many excellent suggestions here for getting you where you want to be with your equipment mix, and I imagine the C28 with different tubes, as suggested, is another good option.

Nice additions.  I definitely agree with the break in suggestions, speaker placement and recalibrating subs (after electronics are fully broken in), etc.  But @mapman hit on what I was thinking too. Are the more resolving amp and pre combo just highlighting issues with quality of your source gear (or source material)?  The beauty and problem of upgrading critical parts of a HiFi system is that you can now notice the value of other improvements, and the weaknesses in parts of the system you hadn’t noticed previously - what makes this hobby both interesting and a challenge.

kn

The key question is: what exactly did he find objectionable or lacking in terms of sound quality or tone in the MA 352 Hybrid? Only once we know this can we offer any recommendations. Furthermore, the person asking the question has not specified which other devices are part of his system.