Pioneer GMA3702 500W 2-Channel Bridgeable Class AB Car Amplifier with Auto Signal Sensing

Compact 2-Channel Class AB Amplifier With 500W Maximum Power & Automatic Signal Sensing!

The Pioneer GM-A3702 delivers powerful and efficient audio amplification in a space-efficient design. This 2-channel Class AB amplifier produces 60W RMS x 2 at 4Ω or can be bridged to deliver 190W RMS x 1 at 4Ω for subwoofer applications. The automatic signal sensing technology automatically selects between RCA or speaker-level inputs and powers on in sync with your receiver, eliminating the need for remote turn-on wiring in factory system installations.

The high-volt input level control accommodates gain adjustment from 0.3V to 6.5V (RCA) or 3.0V to 26V (speaker level), while the balanced isolator input circuit minimizes noise and interference. The built-in low-pass filter with 80Hz cutoff frequency and 12dB/octave slope provides clean bass response. With compact dimensions of 246mm x 60mm x 180mm and efficient heat dissipation through the one-body heat sink design, the GM-A3702 offers flexible installation options for various vehicle applications.

✔ Key Features & Benefits

• ✔ Class AB Design: Balanced efficiency and performance with minimized crossover distortion for high-quality sound reproduction
• ✔ Automatic Signal Sensing: Automatically detects RCA or speaker-level inputs and powers on with receiver for seamless integration
• ✔ Bridgeable Configuration: Combine channels for subwoofer use with 190W RMS at 4Ω bridged output
• ✔ High-Volt Input Control: Wide gain adjustment range from 0.3V to 6.5V (RCA) or 3.0V to 26V (speaker level)
• ✔ Built-In Low-Pass Filter: Selectable 80Hz cutoff with 12dB/octave slope for clean bass frequency management
• ✔ Compact Space-Efficient Design: Small footprint with one-body heat sink for flexible installation in tight spaces
• ✔ Speaker-Level Inputs: Compatible with factory radios without RCA outputs using included high-level input harness
• ✔ Protection Circuit: Built-in protection system guards against overheating, short circuits, and DC offset

Technical Specifications

• Class: Class AB Amplifier
• Channels: 2-Channel (Bridgeable to 1-Channel)
• Maximum Power: 500W Total (170W x 2 at 4Ω, 250W x 2 at 2Ω)
• RMS Power (CEA-2006): 60W x 2 at 4Ω (14.4V)
• RMS Power: 95W x 2 at 2Ω
• Bridged Power: 190W x 1 at 4Ω
• Continuous Power: 22W x 4 (50Hz-15kHz, 5% THD, both channels driven)
• Load Impedance: 2Ω to 8Ω (2Ω minimum for bridged mode: 4Ω)
• Frequency Response: 10Hz - 70kHz (+0dB, -3dB)
• Signal-to-Noise Ratio: 95dB (IEC-A Network)
• Distortion: 0.05% (10W, 1kHz)
• Input Sensitivity: 0.3V - 6.5V (RCA), 3.0V - 26V (Speaker Level)
• Low-Pass Filter: 80Hz Cutoff, 12dB/Octave Slope
• Inputs: 2 x RCA, Speaker-Level with Auto-Sensing
• Outputs: Screw-Type Speaker Terminals
• Fuse: 25A
• Power Supply: 14.4V DC (10.8V - 15.1V allowable)