I´ve got an offer to buy an Telefunken V672 preamp at a fair price. Are these good as a bass preamp/DI??? Im a coplete newbe to this vintage stuff. Is it hard to wire up one of these modules? It needs power and some conections as far as I know. I know how to solder but havenever done something like this. Are there some simple plans for doing this? I think it would hopefully be a fun project. Should I stay away?