Home Theater Direct (HTD) subwoofer digital amplifier SDA-120

The SDA-120 is a warm sounding, cool-to-the-touch, digital subwoofer amplifier that provides plenty of clean power to most subwoofers. It includes both line level and high level (already amplified) inputs. This allows the SDA-120 to be used in both surround sound and whole-house audio applications.


Unlike subwoofers with built-in amplifiers, the SDA-120 is best placed with your other AV equipment requiring only standard speaker cable to connect to your subwoofer. Alternatively, it can be placed near the subwoofer in cases where a line-level RCA connection has already been run to the subwoofer location.


1 LFE RCA gold-plated input

Hi-end 5-way binding posts for driver connection

Designed for 4 ohm load

120 Watts RMS, 150 Watts max

Frequency response "flat" from 20 Hz - 100 Hz; -3dB at 10 Hz and 300 Hz

S/N Ratio 102dB

Auto-On Sensitivity (at 50 Hz) 4.5mV

Auto-On Delay 7 seconds

Auto-Off Delay 10 minutes

Dimensions (HXWXD): 1 3/4" X 8 3/4" X 7 3/4"

Product Information