Pioneer M 72 Amplifiers

I just bought the c72 and m72 and you say I can hook up a sub?

I recently got my hands on an Pioneer Elite M-72 amplifier, along with a C-72 pre-amp. I needed to upgrade the power and sound quality for a pair of Paradigm Moniotr 9's. They are bi-ampable and can handle way more than my beginners level Sony DE-885...