What tube preamp to go with McIntosh MC275?

I have never been happier than with my current setup which includes

McIntosh Vintage Tube Tuner/Preamp mx110z.

I sold McIntosh SS C28 Preamp and bought the mx110z.

Happily, when I went to TT with 2 tonearms, mx110z’s two phono inputs made it easy.

http://www.roger-russell.com/tunpre.htm

good photos here

https://skyfiaudio.com/products/mcintosh-mx-110-tube-preamp-tuner

good article about it

https://positive-feedback.com/Issue77/vintage_mcintosh_experience.htm

My integrated Tube Amp gives me remote volume which makes it easier to use Vintage.

Other poster mentioned using the tape loop to get remote volume when preamp does not have that.

only a few around for sale, and they are going up in price it seems

https://www.hifishark.com/model/mcintosh-mx-110-z

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the tuner is fabulous (I have dedicated FM antena, thus good signal which it needs) I have found many/most people have never heard terrific FM, even my audiophile friends. I use the tuner, primarily for my Jazz station, it is the best sounding tuner I ever owned. My Carver Tuner is the best given weak signals, but doesn’t sound as good.

found this when deciding whether to buy

"When operating to spec, the mx110 tuner section is superb. McIntosh engineer (way back then) Richard Moderaffi (who originally designed the MR77 & MR78 tuners) (performs modifications on McIntosh tuners) said there is nothing he could do to improve upon the original design of the mx110 tuner section. It was (and still is) that good."

https://www.audioclassics.com/mods

45s make an amazing preamp.  Check out the KR P-135.  It is an awesome unit.  Here is a review from positive feedback.  

https://positive-feedback.com/reviews/hardware-reviews/kr-audio-p-135-preamplifier/

I am a KR Dealer.  If you are in North America PM me if you are interested.  If you aren't in North America, I can help you locate a dealer.  I think this would be brilliant with an MC275.  I know nothing about your 300B but KR makes a couple different 300B amps and this is a good match with them.  

I am considering these three, which one is the best among the three?

1) Luxman Luxkit A3300
I read that this is based on the McIntosh C20, then Luxman do some improvement or changes on it to beat the C20.  This one has recently been serviced with all new caps.  This is the cheapest of the three.  I hope it has better synergy with my MC275.  I like the look of it.

2) Audio Research SP6
I read good reviews on this.  Service history is unknown, the seller hasn’t responded yet.  More expensive than A3300, similar price as the CL34.
3) Luxman CL34
This technically is a higher model than the Luxkit A3300.  Also recently serviced.  I can’t find much information on it.  Similar price as the SP6.

I am getting confused now. I borrow the A3300 from a friend and I don’t like the sound. It seems it filter out something. Music is not as engaging, and got fatigue after a while. I prefer to have my DAC directly goes into the amp, for both MC275 and the custom built 300B. It seems buying a preamp is trial and error?

or could it be the cable?  I only have two pairs of RCA.  One of them gives me that fatigue when I used it to connect my DAC and power amp.