Rolls MX422 4-Channel Professional Field Audio Mixer
| Inputs | 4 x XLR Balanced Female |
| Output | 2 x XLR L/R Balanced Male |
| Monitor/Headphone Out | 1/4" Phone 3.5 mm Mini |
| ALT I/O | AUX Input: 3.5 mm Mini Monitor Input: 3.5 mm Mini |
| Link Input/Output | No |
| Impedance | Mic: 10 Kilohms XLR Balanced Source: 22 Kilohms RCA |
| Gain | +65 dB |
| Hum & Noise | 115 dB |
| Frequency Response | 20 Hz to 30 kHz +0, -3 dB |
| Distortion | Not Specified by Manufacturer |
| Metering | Calibrated VU Metering |
| Controls | Channel Level Pan Limiter Threshold 1 kHz Tone Headphone Level Trim (Gain) Phantom power (+48 V) Low-Cut Filter Battery Select |