Best budget preamp for my entry level system?


Greetings everyone. I need some input on the selection of a pre-amplifier.

After years of making the most of and enjoying my existing budget system, I'm kicking in a few dollars to upgrade my system. I'm currently using a Marantz 2215B receiver, a Pioneer PL-550 turntable, a pair of Boston Acoustic CR-9's, an old junky JBL sub, and a bluetooth adapter to connect to my i-phone for streaming audio....

So far I have purchased the following replacement / upgrade components: Zu Audio Omen Dirty Weekend Speakers, and a Emotiva UPA-200 Amplifier.

>>> Any recommendations on a pre-amplifier? I'm definitely thinking pre-owned, and something around $300. Would want to connect my existing turntable, and a good quality CD player to it in the future. Also like to use my I-phone as a source as well through either a bluetooth adapter, or plugging in directly. I mostly listen to classic rock and rock.

Thank you, any feedback provided would be greatly appreciated!

Rene

barkeyzee1
Check out the Schiit Audio Saga.  They are clearing out the last of them with intro of the upgraded models.  It's on B stock for 200.  I bought this and compared it to my Parasound Halo P5 and it was no contest.  The Saga was clearly superior with more detail and therefore imaging.  

Buy their stand alone phone pre and you're set.  
I agree wholeheartedly  with Millercarbon,  It would make your system much more complicated.  Yes It's a good idea if you want to seriously upgrade your system , but your next step given your budget is to my mind to consolidate sell and start over and and buy integrated. 
You read what these audio nut bags,  myself included ,spend on just a piece of wire.  I am pretty cheap by these standards.  I was already to tell you that the best pre to get is a 6SN7 based unit but these run about $1,200 which is cheapish for high end pres but way out of your budget. 
You've done it and started the slippery slope,by buying an amp, well if I were you I would patiently scour the used market for a great deal. But There are a lot of headphone amps that are also pres and the Schiit suggestion seams cogent  if it has a phono stage you might want to  give it a go.
Thanks for all of the helpful feedback received!

I checked out the Schiit website, looks like they make some good quality equipment. Great specs, lots of great reviews, and I have seen the Schitt name referenced in quite a few discussions in these forums. MANI Phono stage, SAGA preamp, and the LOKI tone control (EQ) can all be had for combined cost of less than $500.

A quick search on e-bay shows lots of integrated amps available. 

Unfortunately, listening to the equipment prior to purchase isn't possible in most cases, at least for me anyways. Lots of research, lots of review reading, and then buying equipment that has a good return policy is the best approach. Zu Audio and Schitt both have a good return policy.

PS Audio Sprout (used) would be an integrated option or a used Parasound P5 pre if you want to keep the Emo amp...decent burr-brown dac, phono stage, bass management.

wont get you to the promised land but decent sounding, well built budget pre with options

-JP
+1 on the Schiit Saga.  I own one and love it.  The newer Saga S is a solid state version for more money ($299) and the Saga + ($400) is an updated version of the original tube-based Saga.