Phono preamp question


I'm slowly trying to upgrade my vinyl system to something that could be considered moderately decent, not necessarily high end. I have an older full feature preamp and am thinking in getting a separate phono preamp. I'm assuming the phono preamp would need to be connected to one of the line inputs. Would my preamp be the weak link if I get a good phono preamp to use with my existing preamp? Can a phono preamp be connected directly to the amplifier? FWIW, the preamp is an Adcom GTP-750. Thanks.
128x128kalali
If you have not already done so try the line out (to power amp) on the 565 that eliminates the tone controls (forget what it’s called, but you know what I mean).

Also purchase or download a cartridge alignment tool to check setup (proper cartridge setup makes a huge difference in sound quality).

Research stylus and LP cleaning. I use a Magic Eraser and a stylus brush on my Grado, but care needs to be taken with the ME (gobs of how to info in the forums).

Make certain that the deck/platter are level and that the arm is properly balanced prior to setting the trackingforce/anti skating - again "setup".

You might also look into an upgraded stylus for the 95 if they are still available (I’ve only heard the OEM SE version, but there were others).
My bad, I meant to add what I paid for my preamp & phono amp in the post above. I bought them both when they were about 10 years old for around 25% of their original cost. I wouldn't necessarily recommend buying anything that old now unless it was completely gone through, but wouldn't hesitate buying another 10 year old unit if it was a well built one. You should be able to do that for a relatively reasonable price if you so choose. 

Thank you all for the tips and recommendations. Even though I very rarely use this system, I'm having hell of a time to let go of it. These gears have been with me most of my adult life; the L40s since 1978. 

As a start, I'll follow dekay's great tips and look into a suitable replacement cartridge. If I find myself listening to LPs more and more, I'll consider an upgrade path for the rest of the gear.

Thanks again. 

My last 2 cents
seeing your budget ( now I see why you said the Simaudio 110lp was hight end )
go for one of the Chinese tube phono preamps
for under $100 .

vair68robert, thank you. I've decided to repurpose my budget towards a suitable/better cartridge that I can use with this turntable and move it to better turntable if/when I decide to upgrade the table.

I'll post a separate thread to ask for cartridge recommendations after I've had the opportunity to do some background research.