Amazon.com: Klipsch Reference R-121SW 12” Front-Firing Subwoofer with revamped Spun-Copper thermoformed crystalline Polymer woofers and an All-Digital Amplifier for Premium Sound in Black : Electronics
Replacing a Subwoofer Amplifier – Klipsch
Klipsch ProMedia 2.1 Front 200W Powered Subwoofer Amp and Power Supply | eBay
Amazon.com: Klipsch Synergy Black Label Sub-120 12” Front-Firing Subwoofer with 200 Watts of continuous & 400 watts of Dynamic Power, and Digital Amplifier for Powerful Home Theater Bass in Black : Everything Else
Replacing a Subwoofer Amplifier – Klipsch
Klipsch KD-10SW 10" Powered Subwoofer with All-Digital Amplifier in Black - Walmart.com