Fosi Audio M03 Subwoofer Mono Amplifier

Nice and sweet

Nice amp, small size and with simple yet powerful features. For your sub this does the job well, and is a product that works. I just wished they included and option to buy with a more powerful power supply.

Simple and perfect

I purchased this to replace the blown amp in a JBL B212 ultra base. The original amp was 75W and it was driving a 12" replacement speaker. I attached this to a speaker output on a Marantz 2216 and couldn't be happier with the results. The frequency cutoff adjustment is awesome and so is the volume adjustment which allows you to bend it perfectly with the L212 tower speakers accompanying it. My only recommendation for improvement is labeling the frequency cutoff range on the dial to know roughly where it's set.

Great Value!

Great value amp. Doesn't sound as nice for a main speaker but great for a low power subwoofer. It has all the right features for that price point. Love it