Abuck,
Something seems very wrong here.
1) Good tube preamps (including the Modwright) don't normally making loud hiss
2) In many years in this hobby you're the first I've heard of inserting a PVC preamp between an active preamp and amp to try to eliminate noise. An extra box and extra cables should be helping.
Perhaps there's an impedance mismatch? what are the specs on the amp and pre in that regard. Maybe someone more technical than me can comment based on that additional info.
Don't give up, figure it out :-) Cheers,
Spencer
Something seems very wrong here.
1) Good tube preamps (including the Modwright) don't normally making loud hiss
2) In many years in this hobby you're the first I've heard of inserting a PVC preamp between an active preamp and amp to try to eliminate noise. An extra box and extra cables should be helping.
Perhaps there's an impedance mismatch? what are the specs on the amp and pre in that regard. Maybe someone more technical than me can comment based on that additional info.
Don't give up, figure it out :-) Cheers,
Spencer