The DB25 is a transformer balanced, passive direct box. It features a Ground Lift switch for hum elimination, and an Attenuator switch for padding the input signal by 20dB, or 40 dB. Padding the input signal provides a way to connect the DB25 to a line level signal, even a speaker level signal and connecting it to a balanced line or Mic input on a mixer. The two 1/4" inputs are paralleled for guitarists to "pass-through" their input signal to a tuner, pre amp, etc..
DB25 Specifications:

* Frequency response 50 - 15K Hz + -3 dB
* Output imp. 600 ohms
* Input Impedance 50K ohms
* Max output level 10 dBm
* Polarity + Pin 2 hot (XLR)