Sumo Athena Pre opinion....

hi all,

I'm thinking of getting 2nd hand Sumo pre to replace my Sonic Frontiers SFL-1 hybrid pre. The Sumo has the active & passive mode together with MM/MC phono stage. They claimed the sumo is dead quiet pre, musical and gives darker background.

Does anyone has any experience on sumo pre? Would appreciate if you guys can give some comments.

Thanks