I want to encourage you to upgrade your speakers, then change equipment.
IF you keep efficiency in mind when selecting speakers, then you would never need that much power.
One day, you will want to try tubes, perhaps both preamp and amp or integrated tube unit. Efficient speakers will be your friend then as well.
It’s about smaller: cost, unit size, unit weight, heat produced, placement options, it all makes a difference, including number and length of cables.
As for recommended preamp, I absolutely love my McIntosh mx110z tube tuner/preamp from the 1960’s, recently overhauled by Audio Classics.
http://www.berners.ch/McIntosh/en/MX110.htm
It's MM Phono (2 inputs) stage sounds terrific, I use a SUT for MC, and I get remote volume from the amp.