hello im new here and i have a few questions . i endid up with a baf1 amp .2o bucks at a yard sale .it works great . my question is what preamps can i use on the baf1 since its a dd/dc set up . i cant find a caf1 so what can i use. i also have a tu 717 tuner to go with it. id be greatfull fo any info . i see lots of preamps on e bay but dont know what i need to match the baf1 . id like to use the dc side of this amp. and im not shure what i need . thanks dale