di4: BSS AR 133 premium DI-box

Specifications
Input Impedance 1 mOhm (pad at 0dB), 47 kOhm (pad at -20dB or -40dB)
Max Input +9dBu (pad at 0dB), +29dBu (pad at -20dB), +49dBu (pad at -40dB)
Input Connectors Two Parallel 1/4″ jack connectors (Tip Hot +ve, Sleeve ground), and a parallel XLR connector (unbalanced) (Pin 2 Hot +ve, Pin 1 & 3 ground)
Output Transformer Balanced
Max Output +8dBu into 600 Ohms or greater
Output Connectors XLR3-32 or equivalent
THD < 0.005% at 1khz, 0dbu output
Noise < -105db unweighted, 22hz-22khz, rms*
Frequency Response 30Hz to 20kHz, +0dB/-1dB
Main/Standby battery 9 volt PP3 type, preferably alkaline
Power Consumption on phantom: less than 7.5mA, on battery: less than 2mA.