Active di boxes active direct boxes are in fact preamplifiers whose primary function is to provide higher input impedance than that of a transformer to drive instruments with low level signals.
Active di box.
This means that it can handle lower level signals and still sound good.
These days there are excellent passive and active di boxes.
The pz di is a high performance specialized active direct box designed to accommodate acoustic and orchestral instruments with a selectable input impedance that can accommodate magnetic pickups or piezo transducers and a variable low cut filter.
An active di box includes a preamplifier to provide a stronger signal and higher input impedance.
And active dis can be designed to be extremely quiet hi fi and transparent tonally.
Behringer s take on the all important active di box gives you functionality durability and incredible sound at a remarkable price.
This type of di was originally designed to provide an extra gain to boost the weak output of some passive single coil pickups but the extra gain is great for driving long cable runs and many modern active dis include advanced signal routing capabilities and higher headroom than their passive counterparts making them an excellent choice for keyboards and instruments with active pickups.