What is the difference between this and a DSP?

This is an analog equalizer: it shapes frequency gain and subwoofer level with knobs. A DSP adds time alignment, per-channel crossovers, presets and often app control. This unit is simpler and does less.

How many channels can I connect?

Two inputs (CD and AUX) feed four main channels plus two subwoofer outputs, six outputs total. The four main channels carry the seven-band 63Hz to 12kHz adjustment.

Does it need a separate power supply?

It runs on DC 12V, so it wires into the car's electrical system through the rear power terminal block.

Can I adjust the subwoofers separately?

Yes. The panel has dedicated frequency and volume controls for the two subwoofer channels, independent of the four main channels.

What comes in the box?

The equalizer itself. Wiring, RCA cables and mounting hardware are not listed, so plan for those separately.

Will it work with a factory head unit?

It needs line-level RCA inputs. A factory radio without preamp outputs needs a line output converter first.

Where is the 5-Band Parametric Car Audio Equalizer cheapest?

At Deal.ai, for $33.99, as of our latest check.

Free shipping on everything10% off your first orderNo account needed · Buy 2, save 10% · 3+, save 15%

5-Band Parametric Car Audio Equalizer

Sold and shipped by Deal.ai

$33.99Free shipping

Buy 2, save 10% · 3+, save 15%

Extra 10% off your first order

Color: EQ5 Black

Arrives about Nov 21 – Dec 1, from a warehouse in China

30-day full refund: if you're not happy with it for any reason, or it never arrives, tell us within 30 days and we refund you in full. Shipping and refunds