GS Audio BC-101 (BC-1)

Well, this thing is a pretty neat idea. Easily change crossover settings from drivers seat as well as gain. However, i dont believe the settings on the dials are completly accurate. You may have to adjust some on the amp in order to open the range enough for this to take over. On the plus side, install was simple and took 20 mins. Once it's hooked, it does work. Best advice, dont look at the numbers on it while adjusting, use your ears. Overall, for 12 bucks, pretty cool add-on. BTW, get at LEAST a 3 foot rca to go with it, the rca's are its leash, and limit mounting location accordingly.
PROS: easy install, cool gadget, price,
Cons: not 100% accurate, may not last for years.

Perfect for in car use instead of trying to tune off the amp. Best money spent.

This is a great add-on device for anyone looking to improve subwoofer sound and have control as well.

This part is awesome - when it works. This is the only one I could find that not only adjusts the bass level/volume/output, but also allows you to adjust the hertz level so you can adjust based on what type of music you're listening to.

Unfortunately though, mine broke after less than one month of ownership. The unit started putting out a very loud hum to my amp/woofers when I had the hertz turned down. When I turned it up to 200, the buzz/hum went away.

I verified it was this unit by removing it from my system, and the noise went away.

Great product, great idea, but I don't have $17 a month to replace these all the time.

Hopefully my replacement unit will last longer than a month.

Works good easy install to anyone that needs a universal remote bass knob.