The SA202-RDT is 20-watt per channel (4-ohm) Class AB
amplifiers and a maximum gain of 35 dB and includes a
mounting hardware and also a 15-Volt power supply. Input
options dual such as RCA jacks as well as a stereo mini jack
for line-level audio sources plus a speaker-level (amplified)
input for use with low-wattage speaker outputs (like AV
projector to external speakers). The mini-amplifier adapts to
pole, security or surface attachment installations.