The Audix APS911 Battery-Operated Phantom Power Supply and Converter is a battery-operated phantom power supply for energy-efficient electret mics that can also adapt 48V phantom power from a mixer or preamp to the mini XLR connection found on these mics. Use it with Audix's lavalier, hanging, boundary plate, and HT2 headset microphones.
Special extras on the APS911 include an on/off switch and a bass roll-off feature.
| Input Connectors | Mini XLR Female |
| Output Connectors | 3-Pin XLR Male |
| Adapter | Adapts 9-48V Phantom Power on XLR for use with small mics bearing mini XLR connectors |
| Battery | 1.5V AA |
| Power |
9V Phantom Power Ouput from a 1.5V Battery Also adapts incoming 9-48V phantom power for use with electret mics in passive mode |
| Dimensions | 3.27 x 0.87 x 2.48" (8.3 x 2.2 x 6.3 cm) |
| Weight | 8.0 oz (227.76 g) |