I purchased a C-J Primier 11 from a good friend. I found the bass a bit lacking. I called C-J, and they recommended bi-amping with a MF-2250 for the bass with the P-11 for mids and highs. My speakers have dual binding posts which made the project possible. I purchased the 2250, ran two sets of cable to each speaker, two sets of interconnects to each amp from the pre-amp, and could not be more pleased with the results. I don't think I would go out of my way to bi-amp, but in my case I did not want to sell the Premier 11!
Regards,
Regards,