Best Preamp under $1000-need 2 sets of RCA outs

I am using a Krell 250a power amp, Arcam CD player, Silverline Panatella II speakers, a pair of Velodyne HGS-10 subwoofers and Harmonic Technology cables. I currently run balanced cables to the amp and single ended to the subs but the gain differential make the subs difficult to blend. Unless there is a better way to mitigate this issue, I am seeking your expert advice on a preamp that has two sets of single ended pre-outs.

Thank you.