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Powerful 4-Channel Full System Amplification
The STX Audio STX1200.4D delivers strong and clean multi-channel power for a complete car audio upgrade. With up to 1200 watts max output and 75W RMS per channel, this Class D amplifier is designed to drive door speakers, tweeters, and subwoofers with clarity and balanced performance.
Efficient Class D MOSFET Technology
Built with a MOSFET-based power supply and Class D architecture, this amplifier ensures high efficiency, stable output, and reduced heat generation. Its 4-channel design can also be bridged for increased power, making it flexible enough for both full-range systems and bass-focused setups.
Flexible Sound Tuning & System Control
Fine-tune your audio experience with adjustable low-pass (LPF) and high-pass (HPF) filters, allowing precise control over frequency distribution. Whether you're powering a full speaker system or bridging channels for subwoofers, this amplifier adapts easily to your installation needs.
Key Highlights
- 1200W max power output for strong system performance
- 75W RMS per channel for clean audio delivery
- 4-channel Class D amplifier design
- Bridgeable channels for increased output power
- MOSFET power supply for efficient operation
- Adjustable low-pass filter (LPF)
- Adjustable high-pass filter (HPF)
- Freestanding compact mounting design
- Suitable for full-range speaker systems
- Reduced heat output for stable long-term use
- Ideal for car audio upgrades and system expansion
What’s Included in the Package
- STX Audio STX1200.4D 4-Channel Amplifier
- Mounting Hardware Kit
- Power Wiring Guide Label
- User Manual