| Power Source | 220-240 V AC, 50/60 Hz | 
| Power Consumption | 20 W | 
| Rated Output | 36 V DC, 480 mA | 
| Input | Mic: -60dB*, 600 Ω, unbalanced, phone jack AUX: -20 dB*, 10k Ω, unbalanced, phone jack
 Recording: -20dB*, 10k Ω, unbalanced, RCA jack
 | 
| Output | Recording: -20dB*, 10k Ω, unbalanced, RCA jack | 
| No. of connectable Chairman/Delegate Unit | Max. 24 units | 
| Control | Priority speech chime: Operation of TS-691L-AS priority button activates a single-tone chime Speaker restriction: No. of simultaneous-usable TS-692L-AS can be set to 0 – 3
 Automatic Mic-off function: Off, 30 sec. (selectable)
 | 
| Applicable Unit | TS-691L-AS / TS-692L-AS | 
| Finish | Panel: Aluminum, black, 30% gloss, paint Case: Steel plate, black, 30% gloss, paint
 | 
| Dimensions (W x H x D) | 420 x 96.1 x 222.5 mm | 
| Weight | 2.7 kg | 
| Accessory | Power Cord (2m) x 1 |