Active studio monitors have built-in amplifiers for each driver component (typically the tweeter and the woofer. This design allows for better control over the sound produced, as each amplifier can be specifically tuned for the component it's driving. Active monitors are also more convenient because they don't require external amplifiers or complex cabling setups. However, they tend to be more expensive and require individual power sources for each monitor. On the other hand, passive studio monitors require an external amplifier to function. The external amplifier powers all the speaker components. This setup allows for more customization, as you can choose an amplifier that suits your needs. However, matching an amplifier to passive monitors can be complex, requiring knowledge of power ratings and impedance. Passive monitors also require more cabling and can be less efficient, but they are typically less expensive than active monitors. A quick way to check if you have passive or active monitors is that the back of active studio monitors always has a main outlet.