Comparison: Harman Kardon Citation Sub vs SpeedLink Gravity Carbon 2.1
| Harman Kardon Citation Sub | SpeedLink Gravity Carbon 2.1 | |
 |  | |
| Brand | Harman Kardon | SpeedLink |
| See Lowest Price | See Lowest Price |
| Harman Kardon Citation Sub | SpeedLink Gravity Carbon 2.1 | |
| | |
| Brand | Harman Kardon | SpeedLink |
| See Lowest Price | See Lowest Price |