Gravity GR-EQP11 Digital Bass Machine 1/2 Din 9V 4-Way Car Parametric Equalizer w/Front, Rear + Sub Output and Night Illumination

This performs wonderfully as a bass machine but I was particularly impressed with the options it came with. The bass processor has an on/off button which I really liked so you have the option of boosting the low frequency when it's on or have normal sounding bass when it's off, pretty neat. The volume knob does not control the bass volume which has its own independent knob which is interesting. There's a bass maximization led which is nice and looks cool. There's wide, sweep, and level adjustment knobs for the sub effects and the sub volume knob as well. There's also a low pass filter selector for 60Hz or 120Hz on the top.There's a power led, fader, 2 input selections including a 3.5mm aux in. Both inputs have a gain adjustment on the top. There are 4 EQ adjustments; sub, mid bass, mid, high.I'm very impressed with the versatility and options to adjust the sound. Great EQ and bass processor combination. It's price is cheaper than the others. Sturdy build I love. Will definitely recommend it; 5 stars from me.

Over a year still working great the highs sound high & clear and lows sound low i like that seperate volumes for the highs and separate vol for the Sub channels. I also like it has the option to turn on and Off bass enhancement. if music already has enough bass it could be turned off.

Never heard of gravity brand, But this device work great and look great and is a great additionmy system and sub effect work great.I have 2 12inch Memphis Pro subs with a 1000 watt Crunch Black Maxx amp a Tsunami 2 farad cap on my subs and a 4 channel 700 watt Crunch Black Maxx and my mids and highs lnfinity this equalizer with the made my system more fun and explosive.

Greetings , I recently purchased the GRAVITY bass EQ and let me tell you its worth the money! It basically combines a standard Equalizer with an epicenter bass enhancer. You get the best of both worlds while saving you money. The equalizer lets you fine tune your system with more versatility than your head-unit has to offer. You can also independently adjust the amount of bass to your liking (bass knob). The best thing about this IMO is the bass restoration circuitry. Songs that typically have weak bass response will now have GODSEND amount of deep bass. Classical , oldies , old rock will have that BOOM! not so much for hip-hop , rap as too much bass WILL distort. (side note, if you like SQ systems this might not be for you , but if you are a basshead and love skull shaking bass THIS IS FOR YOU. As far as build quality , id give it a 4/5 (knobs are not that easy to turn) Also it gives off a nice dark blue glow , thats very easy on the eyes at night and not too bright. Overall this is a great budget EQ/bass enhancer for the money. You get two devices in one tiny footprint!

This little device packs a punch. I bought it for better volume control. With the new touchscreens, I missed having a volume knob. But this gives me all those basic features and controls. A volume knob, fade, a separate bass knob. Then the high, mid and bass controls. Not to mention the “epicenter” feature. I love having all the controls at my fingertips.

The unit has excellent control over the sound stage. Each frequency band brings up guitars and vocals without making anything sound too harsh unless you are heavy handed. This almost feels like you’re on the mixing board in the studio. The only issue I had is on a few cold days, I had alternator whine. But don’t worry…there is an easy solution. I pressed firmly on the volume control (first knob) and while pressed, I turned the volume down and back up. This has happened twice with the “fix” working every time. I’ve owned “higher end” equipment before but never would I expect this inexpensive unit to exceed my expectations like never before.

Opened box hoping to find easy fix and was surprised to see quality of hand soldering. See photo. Always had engine noise.

Sounds in my old truck. Only thing I didn't like were the Jack's connection on the back are of poor design, shorts in and out at high volume static so bad that I disconnected it. From the deck to the EQ is where the problems are. Input on back of EQ is cheap quality.

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Amazing sound easy to use the bass processing is just as good as the audio control epicenter I compared it with the clarion the clarion is more fine tweeter signal