MASSIVE AUDIO QUALITY | Since 1999, Massive Audio has been an industry leader in high performance audio products. Massive Audio laid its roots in high quality audio reproduction through in-house engineering and a dedication to customers.MASSIVE AUDIO QUALITY | Since 1999, Massive Audio has been an industry leader in high performance audio products. Massive Audio laid its roots in high quality audio reproduction through in-house engineering and a dedication to customers. EASY TO INSTALL. LONG LASTING. | The Massive Audio EQ4 Car Audio Equalizer is easy to install and produces amazing results for years! The EQ4 is the perfect device to enhance your Car Audio's performance, and the Best Car Equalizer in its class! Dimensions: 7"(W) " 1"(H) " 4 1/8"(D). SAY GOODBYE TO WHITE NOISE | Don't waste your time or money on cheap quality Car Audio Equalizers that produce a lot of background noise. With Selectable 12dB Low-Pass Crossover (60Hz or 90Hz), and Nickel Plated Terminals, you're sure to get great crossovers and perfect sound quality. MORE TUNING CONTROL | With Stellar features such as: Adjustable Master Volume Level, Adjustable Subwoofer Level, 2-Channel RCA Aux Input and Adjustable Gain, 4-Band, 1/2 DIN, 8V Line Driver, Auxiliary inputs, 6-Channel / 7V RCA Outputs, you can take full control on how you like your music to sound! Clearer, Better, Perfect. TOP RATED CAR AUDIO EQUALIZER | The EQ4 Massive Audio Car Stereo Equalizer is a half din 4 band graphic equalizer that will correct peaks and dips in sound characteristics associated with most vehicles' interior. This Graphic Equalizer also features a switch to change the LED color from Red to Blue depending on the interior of the vehicle.