Planet Audio PEQ10 4-Band Car Equalizer & Sub Preamp

The Planet Audio PEQ10 is a compact half-din 4-band car equalizer and pre-amp that gives precise tone shaping plus a dedicated adjustable subwoofer output and remote level control.

Designed to sit alongside your car stereo or in a dash pocket, the PEQ10 adds four fixed-frequency EQ bands, a variable subwoofer filter, and preamp outputs so you can fine-tune mids, highs and bass before sending signal to external amplifiers. It supports dual 2-channel inputs, provides front/rear/sub outputs, and includes a remote sub level control for on-the-fly bass adjustment. Built with high signal-to-noise and low distortion, it’s a practical upgrade when you want greater control over in-car sound staging without replacing your head unit.

How does the PEQ10 improve my car’s soundstage?

The PEQ10 gives targeted control over four frequency bands—75 Hz, 200 Hz, 2 kHz and 20 kHz—so you can reduce mud, tame harshness, or add presence to vocals and instruments. Because it sits in the preamp chain, adjustments affect what your amps receive, allowing cleaner, more intentional amplification. Its high S/N ratio and low THD help preserve audio fidelity while you shape tone.

• Four fixed-band EQ for precise frequency control
• Gain range ±18 dB to boost or cut specific bands
• Wide frequency response (10 Hz–20 kHz) for full-range tuning
• High S/N (>100 dB) and low THD (0.05%) for cleaner output

Can it handle subwoofers and bass tuning?

Yes—the PEQ10 includes a variable subwoofer filter and a phase shift selector that let you set crossover points between 45 Hz and 180 Hz. That lets you match the sub output to your enclosure and room acoustics. The external remote sub control provides quick, in-cabin adjustment so you can increase or decrease bass without accessing the unit itself.

• Variable subwoofer filter (45–180 Hz) for crossover matching
• Phase shift selector to align sub timing with main speakers
• Remote sub level control for convenient bass adjustments
• Preamp output voltages up to 7.0 V for strong signal delivery

What connections and controls does it offer?

The PEQ10 accepts dual 2-channel source inputs and provides front, rear and subwoofer outputs for feeding multiple amplifiers. It also features a fader control and a subwoofer lever control built into the chassis, giving both fine and quick adjustments. Night illumination makes the controls visible in low light for simple operation while driving.

• Dual 2-channel inputs and separate front/rear/sub outputs
• Front panel fader and sub lever for on-board adjustments
• Night illumination for visible controls in the dark
• Channel separation 60 dB to maintain stereo imaging

How does installation and compatibility look?

The half-din chassis (7 x 4.75 x 1.38 inches) is compact for flexible mounting near the head unit or in a dash pocket. Maximum input voltage is 5.0 V and output up to 7.0 V, compatible with most aftermarket head units and amplifiers. Planet Audio includes a one-year warranty when purchased through Amazon.com and recommends professional installation for correct wiring and optimal performance.

• Half-DIN size for convenient dashboard placement
• Max input 5.0 V / max output 7.0 V for broad compatibility
• Compact dimensions and light weight (1.35 lbs) for easy fitment
• Manufacturer warranty and professional installation recommended

Who is this for? The Planet Audio PEQ10 is suited to car audio enthusiasts and installers who want more precise tone control than a stock head unit provides, plus a flexible subwoofer output with remote control. It’s ideal if you plan to add external amplifiers and need a low-noise, low-distortion preamp stage to optimize system performance without replacing your existing receiver.