Welcome to AK. I am not familiar with that model, but they certainly look impressive.
As for listening to them, all you need is a receiver and a CD player. If you don't have one handy, your local thrift store will probably have something inexpensive to get you started.
You posted in Dollars and Cents so some folks interested in JBL might not see it right a way. I have no idea of value, but someone here will.