seeking recommendations for a preamp


I've been lurking a while, but this is my first post. I will appreciate any advice given, and thank you for reading this.

My Kenwood C2 bit the dust. I have lost the right channel, and the input selector is also going out. I'm looking to replace it, and upgrade quite a bit. The wife has given me a $2500 budget, new or used is ok. I listen to Vinyl a lot, as well as my echo dot which is also plugged into my preamp with a headphone to RCA adapter. I'll list my other equipment now.

Completely rebuilt Altec A7-500 with all new parts from GPA
JBL L200s
Kenwood M1D amplifier
Homebrew rebuilt Monoblocks from Zenith consoles with EL84/6BQ5
Yamaha EQ
Thorens TD 318 with an Ortofon cart. Unsure which one as I am at work
SVS PB16 ultra

The room is 16 wide by 20 deep. I primarily listen to the Altecs and tube amps with the SVS sub taking up the slack in the bass from the A7s. Sometimes I listen to the JBLs driven by the Kenwood M1D. I notice that the echo dot sounds a lot better than my turntable, so I know I must be needing a better phono stage. I've tried swapping out turntables with a couple of Dual 1229s with Shure M97XE carts that Bill at fixmydual has gone through thoroughly so It's not isolated to my Thorens. I guess I' surprised that the $30 Echo Dot sounds so much better.  

I admit I don't have the best cables, and will upgrade those as I can. I feel like the preamp is the heart of the system so I want to make a good choice. I love Macintosh, based purely off emotion, but don't know if it's the best choice for my situation. I do not have a local shop to audition, and none of my friends are into audio. What preamps should I be looking at ??
128x128adrianleewelch
I agree with Sidog on the Audible Illusions 3A, 3B or even a fine conditioned 2D. All of them have great sounding phono sections along with excellent CD inputs. For about $400-500 extra you can get a low output MC phono section made by John Curl for AI. I had a 2D for about 17 years, a 3A for an additional 6 years with the MC phono section. The sound is very transparent, more live sounding than most tube preamps, with excellent soundstage and quiet. If you stay with the tubes AI recommends, the tubes last a long time. Combined with a good solid state amp gives a good combination. I now have a system that is much better in all ways than I had with the Audible Illusions preamps, but they would still be very competitive in sound and not be embarrassed in any way. The AI stuff is THE best deal in all of audio for sound at a somewhat reasonable price.
It took a TRL DUDE at $6500 and a Whest 3.0 RDT SE phono unit at $6000 to have significantly better sounding combo than the AI stuff. I also had to buy power cords, a better IC, to get this bigger improvement.
The AI preamps sound really good all by themselves with no extra things to have to buy. The newest 3B would be a step up over what I had. At your $2500 max budget, I don’t know of any other preamp/phono combo that could compete in sound or long life use. They are good enough that you could upgrade around them and not get outclassed.

Bob
I have an Anthem 710 home theater receiver with the room correction.  It did sound better than my previous Yamaha I had before, but the Anthem is not in the same league as any of the AI preamps in sound.  The rest of the home theater is all Paradigm speakers including the Studio 20 v2 Reference.  

Do yourself a favor and read up on all the Audible Illusion preamp reviews.  
I see a 3a on Fleabay for 1700. What tubes do AI recommend. I’m seeing Sovtek in this particular unit
Call Don Sachs. It’s just at your price range and if you work with him, you can just have the features that you need for a little less than your budget. But you will actually own a preamp that will murder anything below $6-7k. They are that good. Because I didn’t want balanced inputs, I was able to get one with an older case that was left behind at the woodshop...but it was stuffed with all the latest improvements and it saved me a couple hundred dollars.