One of our club members purchased a set of Futura's . They sounded fairly good once run in for a few hundred hours , but we all agreed ( for once ) that they should be better , so we started bringing other members amps over and found the bigger solid state amps were the ticket . The best match was with a pair of Vitus mono's , second best match was Simm Audio's W7 . The sound with either of these two amps was what we expected from a set of speakers of this cost and pedigree . As the OP said they don't seem to have the old S.F. warmish house sound . Balance seemed to be spot on , detail without harshness , warmth without mush , and a bigger solider bass hit then we expected from S.F. , over all very nice .