Can someone point me in the right direction? LP player / Preamp / Dragonfly Red...


Relative newbie here.  I want to add a TT and start enjoying Vinyl.  Was looking at the AT-LP120 and have been reading up on pros/cons.  The built in preamp seems to be a low point, many have removed it though.  If I were to got this route, could I then input the sound directly into my iMac and out through my Dragonfly Red to my Amp?  

I have pretty descent sound right now from Audirvana / Dragonfly Red / (Sony 2 channel Amp (next upgrade) / Infinity Kappa 8.1's

Or should I output the LP player directly to the Amp?

Thanks for any guidance!
aqueousaris
Appreciate the responses guys!  Is there a way, or a benefit, to running the TT through my iMac/Dragonfly Red?  Or does getting a TT mean I pretty much need a new amp with a Phono stage?  That unfortunately would give me pause as I've been paralyzed for months about what Amp to get!  lol  I must say that I find myself more comfortable with NEW equipment as opposed to used or vintage (I know...)  So I was leaning toward an Onkyo Integrated A-9010.  I'm on a budget here - wife has no idea what I've already spent haha!
The Onkyo is a good choice! I am a fan of their older gear! Is the Sony an integrated amp and are you using its volume control?
If you can afford it, get the Pioneer PLX1000 DD TT. Brand new $699 + free shipping from American Musical Supply. Excellent TT. Comparable to the old Technics 1200. I bought one. I wanted to try a brand-new TT. I put a Denon 103R mc cartridge on it. I like it very.much! 
For sound and build quality it beats any other under $1K TT! I have posted about it before on this site!
If your Sony has a phono stage, keep and use it. If not, add a Bellari tube phonostage ($350). No real need to discard the Sony!