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
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.
Youre better off surfing local classifieds . Finding something that was not bad but is now 300 bucks. I hate seeing people throw away money for half measures and circulating junk around . I would wait and find something local for 500 bucks . Which you would find with  online sellers for more like 1000. At least then you would have something a little heavier built , just try to avoid gimmicky crap.... just good old 2.0 
NAD 3020i or 3225pe. Great all around units, and fit the budget well if you find one in decent shape. I’m using. 3225pe as a preamp with a pair of NAD 2700 power amps (250 WPC into 8 ohms) vertically biamped to my Energy Reference Connoisseur 70 speakers. It started out as just a NAD 3020i and a pair of Energy Reference Connoisseur 30 speakers, and I was very happy with the sound quality, but the upgrades became available and I couldn’t turn them down. 
I agree with millercarbon! Sell the Marantz and Emotiva. Buy the Mani, Saga and a Schiit amp. Pass on the Loki - no real need for tone controls! The three Schiit pieces should fit your budget. And they would be new under warranty!