Passive DI box with CineMag USA output transformer. Converts instrument signals to microphone signals. An ideal solution for directly connecting your instrument to any microphone preamp. Attenuation/Pad: adjustable from -3 dB to -30 dB. Input impedance: 1 Mega Ohm. Robust aluminum housing construction. Whether it's guitar, bass, keyboard, or another string instrument: the conversion from instrument to microphone signals should not compromise the sound. WarmAudio presents DI boxes designed for maximum sound integrity. From the individually wound CineMag USA transformer to the sturdy metal knob and switches. Even over long cable runs, a warm, rich sound can be heard. This is made possible by the use of high-quality, discrete components. The robust aluminum housing, as well as all switches, knobs, and connectors used, are designed for daily use in the studio or on stage and can withstand even the toughest conditions. The passive version is optimal for keyboards and other high-level sources, but also works very well with passive pickups thanks to its extremely wide frequency range. Both devices feature an adjustable pad. The level can be optimally adjusted to the instrument used in the range of -3 dB to -30 dB, avoiding annoying distortions. No load box function; to operate at the speaker out of an amplifier, the box/load box must be connected to the "thru" jack.