"The 2 channel pre amp will not integrate a subwoofer. Do they make pre amps with more channels for this function?"
Parasound 2100 and Emotiva USP-1 both have HT pass-thru and can run subs with variable crossovers. Anthem TLP-1 has HT pass-thru and can run subs, but the crossover is fixed at 80Hz.
The Musical Fidelity A5 has HT pass-thru but no bass management. I know the A3's had multiple problems with the volume pots, I don't know if the A5's shared the same design.
Parasound 2100 and Emotiva USP-1 both have HT pass-thru and can run subs with variable crossovers. Anthem TLP-1 has HT pass-thru and can run subs, but the crossover is fixed at 80Hz.
The Musical Fidelity A5 has HT pass-thru but no bass management. I know the A3's had multiple problems with the volume pots, I don't know if the A5's shared the same design.