2-kanalig aktiv DI-box, från engelska MTR.
Quality direct boxes are hard to find in today's disposable marketplace - either quality products are too expensive or the economy version is too fragile. The excellent quality DI-3 single channel D.I. box has a mono jack input and link out socket, a ground lift to eliminate hum loops, a three position attenuator for accurate level matching, and a balanced 600 ohm XLR output. The active electronics have a purely resistive high input impedance, and so do not colour the sound. Both models can be powered in 3 ways: by a 9 volt battery, phantom power from the desk (or an MTR PPS-48), or an external 9v regulated power supply.
The DI-2 is a two channel version in the same sized box, for use with stereo keyboards or two separate mono signals. It can also be used as a balanced signal splitter by connecting a short jack-to-jack lead from the link socket of channel 1 to the input of channel 2. Channel 1's signal will then be available on both balanced XLR's, and channel 2's link socket. The attenuation switches remain working independently.
Freq. Res: 20Hz-20kHz ±3dB.
Distortion: (THD) < 0.005% at 1kHz, 0dBu
Output Noise: <-100dB unweighted
In/Link Impedance: 1MOhm, jack.
Output Impedance: 600 Ohms balanced XLR.
Atten. Switch: -40, -20, 0dB.
Ground Switch: Lifted/connected.
DC Input: 9vDC, 100mA, neg. centre pin
Phantom Power: +18 volts DC to +48 volts DC
‘Low Bat’ led: glows @ approx. 6v