OK… I get it now, I think. Not real sure why something so simple evaded me. If I were to common the output of the pre amp and send that to three different amplifiers to power my speakers with the binding post jumpers removed, each driver would then get the full amplified, full frequency signal – right? I would need the external crossover to output a frequency range signal for amplification to each separate amp. So my next question, provided I’m following this correctly, are there external crossovers available for purchase for the purpose of bi / tri-amping?