I have a Frankenstein P Bass. I recently installed an EMG P (active). I have a bass with an active preamp, and had no problems. The situation now is the pickups have more output than my current amp can handle. Is there a wattage minimum, or something of that nature that I can look for before buying. I don't have very good guitar shops locally, so most of my purchases are recommendations. I play classic rock, and 80's Thrash. Combo amp for $500 max is what I need. Thanks!