Another "Best" amplifier Question.

I will probably make a decision by this weekend. Taking a bunch of stuff I've accumulated over the years to a place in Kansas City that repairs audio gear and also buys. None of it, except for my Yamaha CR2020, is worth trying to sell online as it doesn't rise up to audiophile level. Hopefully will be better than taking to recycling. Thanks everyone for the tips so far. 

Thinking about this, I do a reality check. I've always had a love for music but in my formative years, most of my listening was done on an old AM table radio until my father sprang for suitcase stereo record player, Also hung a little transistor AM radio from the mirror in my 1956 Mercury. No FM yet. Me and music have come a long way since them. Though far from affluent, I can afford more than I'm looking for, but. I also love my guitars, 2 Martin acoustics. So to me and my realistic needs, the range I'm in price wise will certainly make me happy. Not going down the rabbit hole of chasing the grail.

So. Still have a pining for that big Yammy. Also not ruled out the Marantz 30 (these would be at open box or refurb pricing. Still intriguing: Arcam SA20, the M5si or Rotel RA1572 MK2. Despite some of the naysayers, I may end up with the Emotiva BASX combo. XA2 amp and PT2 pre. Most features and one of the stoutest amps in this group for about $1200 all in.

Once again, thanks to everyone who took the time to respond. Great group!

I have Kef R300s which were the predecessor to the R3. I have driven them with a Marantz PM8005 very well for years in a large room. I auditioned the amp switching between the R300s and the LS50s and went with the former due to better bottom end. The new version of the amp is the PM8006 which is still available from some dealers and used for $900-1500. It outputs 75 -100 RMS and good current. I have also used it to drive Ohm Walsh 2s, JBL 110s and Spendor LS3/5s. It offers both tone conttrols for treble, mids and bass or a direct preamp tone bypass, is made in Japan and has a 3 year warranty and is a CLass AB amp. You can separate the pre from the amp and upgrade your power amp down the line if you want and also use in a HT system. It is all analog. It delivers above its price point. Lots of review out there on it.

I had great success pairing the Denon PMA-1600 with the prior R7’s. I’ve since upgraded to Kef Reference series, and many other components along my journey but also still have another system at home with the Denon PMA-A110 and Kef r700’s that’s a great match. Kef has great synergy with these particular Denon units.

Jay’s Iyagi on YouTube has posted some videos about these Denon units which is how I learned about them. 

Ok reality check...... First if it dose not have thermonic valves take it out of the listing room, save it for pool partying and such. 

If true high fi is the goal get an amplifier based on the 300b in single end triode configuration. 

If awesome sound but you have a little second harmonic distortion. Well get a push pull based on the 6l6 or a variant triode.  Some models will have a switch to put them in pure triode mode and they will then perform nearly on par with the 300b set. Just with a considerable increase in power. 

Bear in mind that the second harmonic distortion causes an illusion that makes the human brain think that the sound is bigger than it actually is.... or that you are magically experiencing the live performance. 

@stgjames there are quite a few random flaws with your post, perhaps you posted by mistake. The 300b tube, SET and variant amplifiers would be improper for the OP’s speakers. When he mentioned a desire for 150wpc into a 4 ohm load…that decidedly NOT a 300b amp. The 6L6 tube and variants aren’t triodes, maybe you meant to say pentodes.