Lexicon MC4 vs... Audio research LS7 Preamp


I just bought the Lexicon MC4  which I hooked up in 2 channel mode only. It sound good....can this Preamp be used in 2 channel mode.?
Would this Preamp compare favorably or unfavorably with the Audio Research LS7. ?
My Amps are Wyred 4 sound SX1000... class D.
My speakers are Klipsch Heresy 1.

rocky1313
which I hooked up in 2 channel mode only. It sound good....can this Preamp be used in 2 channel mode.?

You just did .

dont you have the AR ls7 now?