Upgrading preamp. Best for under $1K

Another + for the LTA . I’d try and stick to the used market if you’re okay with that.

Used Odyssey Audio Candela.

@thecarpathian I find this to be an interesting recommendation do you have one of these pre-amps? 

If you want to stick to SS, Pro-ject pre box ds2 or RS.  I am a tube guy but these are terrific.

@jeffrey125 ,

Had, and lamented selling it.

Put a couple of nos 12au7's in it- especially Amperex-and it sounds better than it has any right to for the price. They are a real bargain used.

I believe there is a very nice used one for sale on the other site for $650. 

Well, well worth it.