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.