peachtree amp vs. traditional amp


OK, I'm a newbie, so this is possibly a dumb question.  I am considering a 2 channel amp to listen to music (Tidal or spotify).  I am looking at a traditional looking black box amp by Yamaha or Marantz.  But I've also seen a very small amp by peachtree.  The peachtree seems to be about the same of watts as the others.  How would the sound compare?  It seems that the peachtree is so small, it would not have the same power.  Doesn't size/weight translate to some level of power?  Anyways, has anyone compared a peachtree to a traditional amp of the same power rating?  Please share thoughts.
dougmint
@bubba12Can you expand on why you grew tired of the Devialet. I am considering this integrated for a future system just for the convenience factor. I have heard this unit and it was OK. I rationalized the convenience would override the OK sound I heard.

BTW - I thought the Devialet was a hybrid Class A and Class D amp.
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Op, I would take a look at the Belles Aria integrated an the Rogue Cronus Magnum 2 which are both in the  $2-3K range. I owned the CM2 (just a wonderfully sounding amp) and I’ve also heard the Belles a couple of times and found this amp also exceptional for it’s price. Both these amps will blow away, in my opinion, any “traditional” amp mentioned including the Peachtree (not a fan of class D amps). Another integrated amp you should consider in that price range is the Hegel, but I like to support and buy American made if possible.
My two cents:
If you're looking for a traditional black face amplifier like Sansui, NAD, Etc. you're on the right track for good sounding music however, I can tell you that with today's medium of choice which is digital music, streaming from an I-pad or other internet based source (Tidal is an excellent choice) that older analog components lack a critical component for processing digital music-a DAC (digital/analog converter).
I recently went from a very good standard stereo system BK Sonata with Outlaw pre-amp and outboard DAC to a Peachtree Nova 300. With a tear in my eye I unplugged what was a decades long quest for perfect sound and put it in the garage, The Peachtree does it all and sounds absolutely stunning PLUS it has USB and WiFi so you can easily stream the best sound possible from a digital source thanks to a stellar onboard DAC.
All in one beautiful component. The best investment I've ever made-period 
I own a Peachtree Nova 300 and it sounds great. I think it’s a much nicer looking piece than the typical "black box" gear. In addition to being very musical, it has a great DAC and headphone amp and the fact that it takes up less space was one of the deciding factors for me. Mine went into my computer room where I didn’t have space for the typical larger units.