Contemporary Audio Technology Bluetooth ConnectivityOptical digital inputDigital Sound Processing (DSP)Dynamic Range Control (DRC) * Push and hold the volume dial on the back panel to disconnect from all paired Bluetooth devices Back Panel Tone Control R2000DB has treble and bass control built-in on the back panel. Users has the option from -6 to +6db for both treble and bass. Volume Dial / Input Selection Push once to cycle from one source to the nextPush and hold to disconnect from all paired Bluetooth devices Multiple Inputs 2 sets of RCAOptical Input (Toslink) Included Accessories Optical Cable (Toslink to Toslink) Enjoy true lossless digital audio from your TV, computer, blu-ray player or gaming console with the included optical cable. RCA Cable 3.5mm to RCA (4ft)RCA to RCA (4ft)5-pin speaker cable 16-foot/5-meter) Compact Remote The included compact sized remote control puts you in the control from across the room. Adjust the volume, mute the speakers or select the input source with a simple click of a button. R2000DB R980T R1280T R1700BT R1850DB Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.5 out of 5 stars 1,852 4.4 out of 5 stars 4,094 4.6 out of 5 stars 17,681 4.6 out of 5 stars 6,640 4.5 out of 5 stars 1,950 Price $345.06$345.06 $109.99$109.99 $139.99$139.99 $172.40$172.40 $259.19$259.19 TOTAL POWER OUTPUT: RMS 24W × 2 + 36 W × 2 RMS 12W × 2 R/L: 21W+21W RMS RMS 15W×2 + 18W×2 RMS 16W x2 +19W x2 SIGNAL TO NOISE RATIO: ≥85dBA ≥85dBA ≥85dBA ≥85dBA ≥85dBA FREQUENCY RESPONSE: 55Hz-20KHz(±3db) 70 HZ-20 kHz +/-9db 75Hz ~ 18kHz +/-9db 60Hz ~ 20kHz +/-6db 60Hz ~ 20kHz INPUT SENSITIVITY: Line in1: 800 mV ± 50 mV Line in2: 600 mV ± 50 mV OPT: 500 mFFs ± 50 mFFs PC: 700±50mV AUX: 550±50mV (THD+N=1%) PC: 700±50mV AUX: 550±50mV PC:700±50mV, AUX:550±50mV PC:700±50mV, AUX:550±50mV INPUT TYPE: RCA x2, Bluetooth, Optical, Coaxial RCA x2 RCA x2 RCA x2 RCA x2, Bluetooth, Optical, Coaxial BASS DRIVER: 5" alloy 4 inch (116mm) 4 inch (116mm) 4 inch (116mm) 4 inch (116mm) TREBLE DRIVER: Φ25mm Ru-Fe-B silk dome Φ13 mm silk dome Φ13 mm silk dome Φ19 mm silk dome φ19mm silk film DIMENSONS [PER SPEAKER]: 9.5in x 11.25in x 7.5in 5.5in x 8.9in x 7.75in 5.75in x 9.5in x 7in 6in x 8in x 9.75in 6.1in x 8.8in x 10in ACTIVE/PASSIVE Active Active Active Active Active REMOTE CONTROL ✓ no data ✓ ✓ ✓