Looking for A Cost Effective Phono Amp- Any suggestions?"

In addition to the phono stages others have suggested, I've measured the Pro-Ject and Rega phono stages and they work very well.

+1, for the PS Audio GCPH. I liked being able to remotely MUTE the output, when cleaning & dropping the stylus. Also, just before my Safety Raiser did it’s thing, at the end of the record. If you can solder; HEXFREDs and better regulators(both inexpensive) are a snap to install, which make a dramatic difference in performance, when coupled with a nice PC and fuse(as your finances allow). There are other easy mods, as well. Won’t disappoint in stock trim, either. Lots of flexibility and performance, for the money. https://www.psaudio.com/wp-content/uploads/2017/03/GCPH-Phono-Preamplifier2-Owners-Manual-Rev-B-V2.pdf

I noticed your mating with a Linn. I have PS Audio matched with a LInn Lp12 with pink link out board power supply with Soundsmith cartridge. The pink link helps with dynamics. When I sent lp12 in for upgrades I pulled a Linn Axis with basic plus tonearm out of closet to match with ps audio. I always thought Axis was light in presentation but had never plugged it into ps audio. I was a little surprised how much better bass was now mated with the ps audio. From what I understand they are easy to mod and a hifi tuning fuse did help a in my GCPH. Never thought I would use phase switch but I use it all the time.

For excellent sound and highely flexible I'd recommend the Ifi Iphono2 At around $500 or less is quite good for the money I'd put it against many others up to a grand.

Really appreciate all the valuable recommendations. Have anyone used the Music Hall PA 2.2. The comments regarding Linn are quite useful .