Mark Levinson Preamp+Mcintosh Power Amp

My first post here. I love high end audio and listen to my records and streamer all the time. Having said that, it is not until recently that I started learning and experiencing various audio brands. 

I currently own Mcintosh C40+MC7300, which I bought this year as my first SS combo in the last 20 years. I've been using all tubes before. I really love the sound when it works, but there are times when I wish I had a better preamp. I have a large record collection (mostly 1950~1965 jazz originals) and thus have a nice separate phono amp. The reason I bought C40 is because I love recording vinyls and it supports three tape outs. I regularly record to reel-to-reel tapes and also digitize them with my Benchmark ADC. I have upgraded my speaker to Devore O/96 this year and I looove the sound.

So my question is, is it a good (or at least a reasonable) idea to replace my C40 with ML 380s while keeping the MC7300? Can I expect improvements in dynamics, noise, sound stage etc? Any suggestions or recommendations are welcome. Thanks!