Available in three versions operating in the 554 - 586 MHz, 662 - 694 MHz or 823 - 832 MHz & 863 - 865 MHz frequency bands, the U500® conference microphone base sports a combination power and mute switch, high contrast OLED display, adjustable gain and a 130 Hz low cut filter to eliminate low frequency rumble. It provides a 3-pin XLR input for the U 500® Gooseneck Conference Microphone (sold separately, item no. LDU500GM530CC).
- U 500® conference system microphone base transmitter
 - Adjustable gain and 100 Hz low cut
 - High contrast OLED display
 - 3-pin XLR microphone input
 
| Product type | Microphone Accessories | 
| Transmission frequency range | 662 - 694 MHz | 
| Channels | 180 (10 x 18) | 
| Groups | 10 | 
| Inputs | XLR | 
| Frequency response | 60 - 16000 | 
| Signal-to-noise ratio | > 100 dB | 
| Rated HF output power | 10 mW | 
| Controls | Gain | 
| Controls | Low Cut | 
| Controls | Power / Mute | 
| Indicators | OLED Display | 
| Indicators | LED | 
| Power supply | 2 x AA battery | 
| Operating time | up to 8 hrs., battery-dependent | 
| Width | 115 mm | 
| Height | 54 mm | 
| Depth | 135 mm | 
| Weight | 0.73 kg |