I am the original owner of this Acme B4. 8 Ohms. Series 2. I'll be glad to answer any questions. But, basically, plug in a pre-amp and out comes loud, clear bass with plenty of low end. Inputs are Speakon, 1/4 and banana. $450 This item is located in the San Francisco Bay Area. Shipping will be additional, based on the shipping company and your preferred method.