SVS SB13-Ultra (SB-4000 Bluetooth Amp Upgraded 1,200 Watt RMS)

Selling my SVS SB13-Ultra subwoofers that were just upgraded to the SB-4000 amplifiers recently. This listing is for 1 subwoofer. I have two available, just message if you're wanting two. The upgrade kit replaces the entire amplifier and adds the same Bluetooth connectivity as the SB-4000. Using the SVS mobile app, you can control all settings.
This subwoofer originally retailed for $1,500 and was purchased in November of 2017 directly from SVS. SVS soon after that, replaced the SB13-Ultra with the SB-4000, which has an identical 13.5" driver, but with the upgraded amplifier (that is now in these).  
The subwoofer is in very good condition with very few minor light scratches. You can't even get pictures of the blemishes because they are so minor. They work perfectly and sound incredible.  
Includes the SVS SB13-Ultra (SB-4000 Upgraded amp installed), steel grille, power cord, and original double box.
  Only ships to the 48 contiguous US states.

Specs:

Driver | 13.5" Amplifier | 1200 watts RMS (4000+ watts peak) Freq. Response | 19-310Hz ±3 dB Dimension | 17.4" (H) 17.4" (W) 18.5" (D) Unpackaged Weight | 92lbs Packaged Weight | 105lbs