aja wrote:
Stupid question - if the bass guitar's preamp battery is flat, would the passive output still function correctly?
Most are active pickups, so they don't have a passive output. Anyway, the guitar's battery dying wouldn't make the limit light on the amp go on all the time, but insufficient power to the circuit will (I've seen that a few times - specifically on Peavey, but the same thing happens with any similar amp with limiter).