Expert Electronics DSP4 Star X Line 4-Ch Audio Processor

The DSP That Does It All — Precision, Power & Full App Control

The Expert Electronics DSP4 Star X Line is a professional-grade 4-channel digital audio processor built for car audio enthusiasts who demand complete mastery over their sound system. With an 11-band input EQ, parametric EQ per channel, a fully configurable limiter, Bluetooth wireless control, and password-protected presets, the DSP4 Star X Line delivers studio-level tuning capability straight to your vehicle.

Everything You Need to Build the Perfect System

• 🎚️ 11-Band Input Equalizer — Comprehensive frequency shaping across the full audio spectrum
• 🎛️ 1-Band Parametric EQ Per Channel — Pinpoint correction on every output for precise speaker alignment
• 🔀 4 Independent Output Channels — Separate control of each audio zone with flexible channel routing (L / R / L+R)
• 📥 2 Digital Inputs — High-quality source connectivity for clean signal transfer
• 🛡️ Configurable Limiter — Set Threshold, Attack, and Release to protect your amplifiers and speakers
• ⚡ Peak Limiter with Threshold Adjustment — Extra layer of protection against signal clipping
• ⏱️ Independent Delay Per Channel — Time-align every speaker for a perfectly centered soundstage
• 📡 Bluetooth Wireless Control — Full app control over all parameters from iOS or Android
• 🔒 Password Protection — Lock your settings against unauthorized changes
• 💾 3 Fully Configurable Memory Presets — Save and recall complete system setups instantly
• 🔊 300 mA Remote Output — Powers remote turn-on for connected amplifiers
• 🏗️ Aluminum Chassis — Durable, heat-dissipating build for demanding automotive environments

Full App Control Includes

• Channel Routing & General / Output Gain
• RMS Limiter & Peak Limiter
• Input & Output Equalizer
• Delay, Polarity Inversion, Signal Generator
• Configurable Memory & Password Protection

Technical Specifications

General

• Brand: Expert Electronics
• Model: DSP4 Star X Line
• Channels: 4 outputs / 2 digital inputs
• Chassis: Aluminum
• Bluetooth: Yes (app-based wireless control)
• Remote Output: 300 mA

Equalization & Processing

• Input EQ: 11 bands
• Parametric EQ: 1 band per channel
• Channel Routing: L / R / L+R
• Limiter: Configurable Threshold, Attack & Release
• Peak Limiter: Threshold adjustment
• Delay: Independent per channel
• Functions: Mute, Phase, Gain, Delay, Reset (per channel)
• Memory Presets: 3 fully configurable
• Security: Password protection
• Signal Generator: Frequency & sweep

Crossover

• Filter Types: Butterworth / Linkwitz-Riley / Expert
• Attenuation Slopes: 6 / 12 / 18 / 24 / 36 / 48 dB/oct

Power & Dimensions

• Dimensions: 154 × 104 × 46 mm
• Weight: 0.42 kg

🔒 Professional-grade DSP control, secured and ready for your build. Add to cart and take total command of your sound system.