Conrad Johnson Phono Preamps

Your Cartridge output of 1.0 mV is a problem, too weak for most MM RIAA and too strong for most SUTs 

And, let’s not forget, some people get HUM from some Grado Cartridges

so, love CJ, get thee a MM cartridge with a normal high output of 3 to 5 mV to go straight into a MM RIAA input.

and, next get a true low output MC cartridge, with output of say 0.3 to 0.5 mV that requires a SUT, perhaps 10:1, so out of the SUT would be 3 to 5 mv

And, if you go LOMC, you need to learn about impedance. What fun!

I got help here, and put this on the site after making my 1st MC choice, AT33PTG/II

https://www.audiogon.com/systems/11318

Hello RB,  I'm going to throw the monkey wrench into this post.

I am a huge C-J fan.  I had a EF-1,(gave it to the daughter) still have a Premier 17ls pre-amp, and LP66S amp.  Last year I was having the same thoughts as you are now.  I decided to try a Schitt Audio Skoll F Phono Stage.  $400 and loaded with enough features for any Audiophile.  If you don't like it, they will take it back and refund you the full amount.  I hooked the Skoll F up and haven't looked back.  I've been very pleased, and have said so on this forum!  I recommend you give them a try.  Good equipment doesn't need to cost an arm and a leg.  Good luck!  Lou

The CJ Premier 15 is excellent but you would need a head amp if you use a low output MC cartridge.  I run one in one of my systems and use a very cost effective Hagerman Piccolo head amp with excellent results.

Call CJ and ask the same question.  Bill Conrad will probably answer the phone.  

Bill has retired, you will be talking to current owner Jeff.