Di boxes which require a power source batteries or phantom power are called active di boxes.
Active stereo di box.
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.
A passive direct box uses a transformer to convert the signal whereas an active direct box has a preamp built into the circuitry.
A di unit direct input is an electronic device typically used in recording studios and in sound reinforcement systems to connect a high output impedance line level unbalanced output signal to a low impedance microphone level balanced input.
The j48 stereo is a high performance 2 channel active direct box for live concert touring and professional recording studio applications with the ability to handle extreme transients without distortion while delivering the natural sound of your instrument.
Thanks to this circuitry active di boxes commonly require phantom power or a nine volt battery.
To put it simply active boxes require a power supply.
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For example if you were using a passive di to send an old fender bass to the console its single coil pickup had to drive amp transformer mic splitter transformer.
What is a di box.
Radial prod2 passive 2 channel instrument direct box passive stereo di with isolation transformer 15db pad and lift switch with senor microphone cable and instrument cable 4 3 out of 5 stars 21 149 99.
The direct box active can also operate in passive mode.
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Your price 59 99 msrp 99 99.
Sweetwater carries two types of di boxes.
Direct box passive is best for balancing the signal of instruments with active electronics but still performs extremely well on passive pickups by producing a frequency range that exceeds the bandwidth of most passive di boxes on the market.