Heed Quasar Outputs

I am searching for a phono preamp. The Heed Quasar has gotten some interest, but I have some questions on its output. The published specs have a sensitivity for moving coil input of 100 µV - 200 µV - 600 µV. According to the KAB gain calculator, this works out to 68dB, 61dB & 52dB respectively. Eugene HiFi sells the Heed and one of the comments on the web site states "The MC section works best with cartridges in the 0.6mV - 1.25 mV range (despite the published sensitivity ratings). High output MC cartridges work well on the MM section, but low output MC cartidges require a little more gain than what the Quasar provides. The high output rca jacks could be used, but the low output sounds better when connected to a pre amp or integrated."

Would someone with first hand experience care to comment? I am unsure why the Heed has a low and high output. The website states the high output is to drive an amplifier directly, but how could it since there is no volume control? The specs for the output are as follows:
Output voltage: "Low Out": 220 mV/100 Ohm
Output voltage: "High Out": 775 mV (0 dBm)/ 22 Ohm

The right gain is of major consideration for me as my preamp(Gamut C2R) only has 6 dB of gain. Presently I am using my old Nakamichi CA 5 preamp phono section as my phono stage. It has 74dB of gain at the impedance value I am using. This is a little too much, since I can still faintly hear music even when the volume is all the way down.

Another thought about gain values. My Nak has 3 different MC impedance values and different gain for each impedance. Shouldn't all phono stages gain vary as the impedance varies? Most only list one gain for all the impedance values.

Thanks in advance for any replies.