TR-2801 IMPEDANCE 8 OHMS 200 WATTS PROGRAM EACH CENTER & REAR SPEAKER TR-2800 PIANO BLACK DIGITAL SERIES POWER HANDLING 400 WATTS PROGRAM EACH FREQUENCY RESPONSE 40-20 Khz (+/- 3 db) IMPEDANCE 8 OHMS SENSITIVITY 90 db ,1 WATT, 1 METER