Empire EDR9 cart into Lehmann Audio Decade phono preamp, sounds awful

I've just installed Empire EDR9 cartridge on my Jelco SA-750E 10 inch tonearm, and connected it to my Lehmann Audio Decade phono preamp. The sound I got from this cartridge is shockingly bad. Dull, wimpy, limp, barely any highs or any slam or body.

I have set my Lehmann Audio Decade phono to work beautifully with my modded Denon DL-103 cartridge. I was curious to hear how would Empire EDR9 compare to DL-103, but it sounds so ridiculously bad, that it's not really worth comparing.

My Lehmann Decade is set to 100 ohms (seems to work fine for DL-103). I haven't touched the capacitance.

What am I doing wrong? I can't believe that Empire EDR9, which has a pretty hot reputation in audio circles, would sound so horrible.