I got the bass knob for what I consider a great deal at $28. It definitely does what it is supposed to do and very easy to hook up. Voltage readout is spot on. The only thing that I wish was different is I wish the actual knob itself could be tighter. What I mean is the knob turns so easily that it will mive on its own if you set it down or in your lap. But it rolls in smooth and does great. Great for demos but I don't use it in my daily because of the knob being so sensitive to movement. But I live it for the price I have no complaints. Thank you JP and d4s team

Hands down one of the best bass knobs I have ever used or had and I’ve a lot of them. Love the feel of it and how smooth it is. The volt meter is very bright and easy to see will be buying another one before slamolgy for my other car

Very cool looking bass knob. Seams to be well built. Very happy with it.

This bass knob looks AND feels great, voltmeter is nice an bright BLUE for those of you who are trying to keep a certain color in your ride and also handy to know your voltage aswell. It does not have a mount for it but not a big deal ,nothing double sided tape and magnets or velcro cant fix. This bass knob made a different in MY system im not saying it will make one in yours but to mine it did. I went from a sundown phone style connector to the RCA style and i feel my bass hitting harder there for i love this knob. THANKS D4S you guys keep doing your thing! Respect from ARIZONA

Love to feel!!!!! it’s feels sturdy!!!! It’s got that Down4Sound difference feel!!!!

My previous bass knob was not reacting to the adjustments so started lookin for a "COOL" QUALITY BASS KNOB NO REVIEWS FOUND ON THIS SUBWOOFER BASS KNOB BUT SUPER GLAD I TOOK THE CHANCE THE BUILD QUALITY IS AMAZING VOLTMETER WAS ALSO A CONCERN BEFORE PURCHASE BUT THIS IS SPOT ON TO MY OTHER VOLTMETERS WITH NO ADJUSTMENTS

Loved the style of the bass knob of it if it mimicking a subwoofer look. That’s just different. The issue I’m having is there is no place to mount it. D4S should create a mount for it. The knob it self is super loose and if you driving it’ll shift and turn up or down. The voltage LED is super bright which is a plus.

Bought it just a few months ago and it now gives low volume bad feedback thats causing clipping. Also parts of the volume cut audio out and pop and clip. If it did work properly. The only thing I would change would be the volume knob needs to be stiffer. When the bass is full tilt, it rattles it so hard if you’re not holding it that it will turn the bass down. I had to figure that one out the hard way was Wondering if my system was messed up

The knob is way too loose, easily bumped and can blow your whole system.

I was extremely skeptical on making this purchase because I didn't know what I was truly getting. I mean, I have common sense. It's a bass knob, which I need for my amp setup. But I was not aware on what was coming into the mail. When it arrived 2 (within 2 days which was outstanding by the way), I was immediately devastated when I opened the box. With no exaggeration, The bass knob is monstrous! I was blown away about the weight of it and if I could attach pictures of it then I would definitely do so. I haven't taken it out of the plastic "wrapper" yet, but in due time. For an mental picture, if a "regular" bass knob was a firearm, it would be a pistol. But THIS Down4Sound bass knob would be a bazooka!! Words really can't describe how robust this product truly is. I am glad that I took a chance and purchased it. The only con, and I mean this, is that I wished it came in different colors because just "all black". Maybe Down4Sound can take that hint hint and work something out......