jay-syncro Posted February 23, 2020 Share Posted February 23, 2020 (edited) MTR DI-3 Active Mono DI Box in great condition with original box and manual. This DI has been on my board for a couple of years and has worked faultlessly. "The MTR DI-3 single channel D.I. box can be powered in 3 different ways: by a 9 volt PP3 battery, phantom power up to 48v from the desk (or an MTR PPS-48), or an external 9v regulated power supply into the DC socket on the left edge. The MTR DI-3 has a mono jack input, and link out socket to, for instance, an on stage or in studio combo, 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. * Frequency response: 20Hz-20kHz ±1.5dB. * Distortion: (THD) < 0.005% at 1kHz, 0dBu * Output noise: <-100dB unweighted * In/Link impedance: 1MOhm, jack. * Output impedance: 600 Ohms balanced XLR. * Attenuation switch: -40dB, -20dB, 0dB. * Ground Switch: lifted/connected. * DC Input: 9vDC, 100mA, neg. centre pin * Phantom Power: +18 volts DC to +48 volts DC * ‘Low Battery’ led: glows @ approx. 6v" Collection from Margate, or I can post if required. Edited March 4, 2020 by jay-syncro Link to comment Share on other sites More sharing options...
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