Georgehifi - My sources are Marantz SA-15S1 SACD player and Music Hall MMf-7 turntable.Your SA-15S1 won't be 3 or more volts, more like 2v, and your phono stage probably won't give out 3 or more volts more like below 2v. So passives and unity gain active preamps are out of the question.
Then look for any active tube or solid state preamp you like the sound of. As with the BelCanto's high input impedance they will all be a good impedance matches.
Cheers George