Shoebox & rdlangston3,

First, thank you both for responding! I really appreciate it.

I guess I should explain my wishes/needs to help clarify what I want. I will have (a) the existing in-boat speakers, (b) two new JBL 8" tower speakers, and (c) a new 12" JBL sub woofer. I would like to adjust the volume each of the three separately. If I want to take a mellow cruise around the lake at sunset and listen to some music I want to be able to do it without blasting my tower speakers and subwoofer. But, I do have two sons (ages 23 & 21) that will love to do the opposite. LOL. I would think this is a common idea?

I'm not sure if I need a simple 3-zone volume control (or if they even are available). Do I need to be able to adjust the eq on each zone indepenently? Keep in mind I am "not" an audiophile...at least net yet, I might be though if I ever complete this project. LOL.

So, based on that which hardware do you think will fit my needs?

Thank you again!