The SA-250.4LH delivers 1500 watts of clean Class D power across four channels, designed for car audio enthusiasts who want to drive their entire vehicle sound system with a single amplifier. Whether you're powering door speakers, component sets, or adding a subwoofer channel, this full-range amplifier handles complete system configurations with efficiency and headroom.

This Class D amplifier produces 1500 watts at 2 ohms stereo operation, with total musical power reaching 1800 watts and maximum output capabilities of 2300 watts. The efficient Class D design minimizes heat generation while maximizing power delivery, ensuring your system performs consistently during long listening sessions or high-output demands.

The amplifier features comprehensive tuning controls including gain adjustment, high-pass and low-pass filters with 10Hz to 8kHz range, sub-sonic filtering, and bass boost control. Input sensitivity ranges from 0.25V to 4.5V with both high and low input options, accommodating factory head units and aftermarket sources. THD stays below 0.2% with a 90dB signal-to-noise ratio for clean reproduction. The MOSFET power supply operates efficiently on 10-16VDC vehicle electrical systems.

This amplifier works well for complete car audio system builds, multi-speaker setups in trucks and SUVs, or as the foundation for systems that will later add dedicated subwoofer amplification. The four-channel configuration allows front and rear speaker pairs with bridging options for higher power applications.

The compact 11" x 9" x 2" chassis weighs 6.82 pounds and includes thermal protection with LED status indicators. Standard RCA inputs and speaker-level inputs provide flexible connection options for any vehicle installation.

Technical Specifications

Frequently Asked Questions

Can this amplifier power my entire car audio system?

Yes, the SA-250.4LH is designed as a full-range four-channel amplifier that can power complete car audio systems. You can run front and rear speakers on separate channels, bridge two channels for a subwoofer, or use all four channels for component speaker systems. The 1500-watt output provides sufficient power for most vehicle applications.

What input options does this amplifier support?

The amplifier includes both high-level and low-level inputs with adjustable sensitivity from 0.25V to 4.5V. This means it works with factory head units using speaker-level signals or aftermarket units with RCA outputs. The 18k ohm input impedance ensures compatibility with most source units without loading issues.

How do I set the crossover controls for different speaker types?

The built-in high-pass and low-pass filters range from 10Hz to 8kHz, allowing you to tailor frequency response for specific speakers. Set high-pass filters around 80-100Hz for door speakers to reduce distortion, or use low-pass settings around 80-120Hz when bridging channels for subwoofer duty. The sub-sonic filter removes unwanted low frequencies that can cause driver damage.

Will this amplifier work in a large SUV or truck?

Absolutely. The SA-250.4LH provides enough power for larger vehicles with multiple speakers across front and rear positions. The four-channel design lets you properly distribute power throughout the cabin, and the efficient Class D operation reduces heat buildup in enclosed installation spaces common in larger vehicles.

Does this amplifier require special installation knowledge?

The amplifier includes standard features that simplify installation, including thermal protection, LED status indicators, and flexible input options. You'll need appropriate power and ground cables, speaker wire, and either RCA cables or high-level input connections depending on your head unit. The compact size fits most standard amplifier mounting locations.

WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer. For more information, go to: www.P65Warnings.ca.gov