use a regular boss 9v adapter with bcb-60? the original has major shorts in it. id like to think its sufficient juice, the adapter for the bcb reads : ac adaptor PSC-100, model SA10-0910, input 100-240v 50-60Hz 250mA. i could be reading far too into it.
The BCB-60 has a 1000mA supply from memory. As zentropa mentioned, it's all about load. If you have a double pedal and a bunch of digital pedals, the standard PSA supply won't have enough capacity.