Sony XM-GS4 is a GS Series 4-channel car audio amplifier designed for clean speaker power, high-resolution audio builds, and flexible 4-channel, 3-channel, or bridged 2-channel system layouts. It is a strong match for upgraded coaxial or component speakers when you want more output, better control, and cleaner dynamics than a typical head-unit amplifier can provide. Key Features 4-channel GS Series car audio amplifier 70W x 4 RMS rated power output High-Resolution Audio compatible design with extended frequency response up to 100 kHz Flexible 4-channel, 3-channel, or 2-channel bridged system configuration Variable high-pass and low-pass filters for speaker and system tuning Gold-plated terminals and quality Sony GS Series construction Designed for full-range speaker upgrades, front-stage systems, or compact multi-channel installs Ideal For Powering upgraded front and rear speakers Running a front-stage speaker system with stronger clean output Building a 3-channel layout with speakers plus a small subwoofer High-resolution audio systems where clean full-range output matters Technical Highlights Rated output: 70W x 4 RMS Channel configuration: 4-channel / 3-channel / 2-channel High-pass filter: 50–300 Hz variable Low-pass filter: 50–300 Hz variable Frequency response: up to 100 kHz Dimensions: 272 mm x 51 mm x 202 mm Compatibility / Installation Notes Amplifiers require proper power wire, ground, fuse protection, speaker wiring, signal integration, and gain / crossover setup. Confirm speaker or subwoofer impedance and RMS power handling before pairing this amplifier with a system. Professional installation is recommended for safe wiring, correct tuning, and long-term reliability. Availability Note XM-GS4 availability is limited. MCOR Automotive is treating this item as finite / discontinued-controlled Sony inventory. Stock is based on remaining on-hand inventory and may not be normal replenishable Sony catalog inventory. Why Buy From MCOR Automotive Authorized Sony retailer for genuine Sony car and marine audio products Products sold by MCOR Automotive are eligible for applicable Sony manufacturer warranty coverage 20+ years of vehicle audio installation, system design, and product-matching experience Nationwide fulfillment with support from real 12-volt automotive audio specialists
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