It's nice to be able to control the bass level from the drivers seat. Would be nice if it was lighted.

Had this org from rockford but lost it over the years ordered it shipping was great and product was solid

I had installed a RF system to my DEH Pioneer receiver in my extended cab Dakota using an P800 to power two way 5x7's in rear panels 6" round in door panels with satellite tweeters high on the dash and a P300.1 powering a single 12" PS1 and the system rocked or I thought it did until I had installed the PB1...having the bass control at hand without hurting the performance is great. I am 51 and am not afraid to turn it up. Infact people are blown away with the sound and feel that is produced within the cab.

This was exactly what I was looking for.
It's an outdated model but looks exactly like all the newer ones, a fact I found out after buying the wrong one.
Make sure you do some research on the model of your amp.
Nobody had it , this place had it.
My kickers are kick a** now.
More bass.

i purchased one of these for my old p200.2 amp that was pushing 2 12" kenwood subs. i set everything on my amp for without the knob, then once i installed the knob, i had to go turn everything down. i read somewhere this knob alone is supposed to boost amp output by like 5% or something... let me tell you, it does. overall, this is a great product and i would recommend it to anyone with a compatible rockford amp. fortunately, i got one with my new 450.2 amp...