Of course, there's a switch. Regarding all basses with any kind of batteries in them, especially EMG, the active circuitries are often critized for limiting dynamics, so yes, you're right about that there's not any
adjustable limiter/compressor onboard, that's a dedicated effect unit, but the induced limiting is a by-product (or fringe benefit if you like it) of the use of batteries only. EMGs and active detractors are always complaining about "limiting dynamics" of active pickups. Think the same about wireless systems. They always induce limiting. No matter how subtle.
Me myself always hears limiting PLUS a slight louder level whenever switching in any preamp (Darkglass, EMG, Glockenklang etc) with the switch regardless of that all knobs are at center detent. Some smaller diff than others. Those with 18v batteries, the limiting is so subtle that it is neglible, though.
Me myself likes EMG and the likes (actives) on basses because of the low impedance conversion, and you can run through large pedalboards. And long cables and you couldn't care less about cables, since they do not have to be audiophile quality or posh corksniffer ones. And you get that strong "ooomph" output. I have both basses that are passive and active and I like them both. However, single coils passive are a gripe, but that's just due to that the 50 cycle hum (europe) does interfere here more since it's bass, no guiitar, so I want to buck noise and hum as much as possible. But that's nothing Fanned Frets, or regular frets can do anything about anyway...