Nakamichi FHA400 High-Performance 4-Channel Class AB Car Power Amplifier (400W Peak / Clean Audio Amplification)

Product Overview

Elevate your car audio setup with clean power output and warm sound fidelity—the Nakamichi FHA400 4-Channel Class AB Power Amplifier. Engineered for car audio enthusiasts seeking audiophile clarity for door speakers and component systems, the FHA400 combines Nakamichi's high-efficiency circuit layout with high-grade internal power components to minimize total harmonic distortion across the entire audible frequency spectrum. Featuring high and low-pass crossover controls, variable gain adjustment, flexible bridging capabilities, and a heavy-duty extruded aluminum heat-sink chassis, this 4-channel amplifier delivers rich midrange vocals, dynamic high frequencies, and reliable thermal stability.

Key Features & Performance Highlights

• High-Fidelity Class AB Topology: Class AB circuit design delivers low-distortion, warm, and natural sound reproduction across high and mid frequencies.

• 4-Channel Versatility & Bridging: Drives a full 4-door speaker setup or bridges to 2-channel mode to power front components and a subwoofer simultaneously.

• Extruded Aluminum Heat Sink: Heavy-duty aluminum heat-sink housing efficiently dissipates thermal build-up during extended high-volume listening sessions.

• Variable Crossover & Frequency Control: Independent high-pass (HPF) and low-pass (LPF) filter controls allow precise frequency matching to protect door speakers and subwoofers.

• Multi-Protection Circuitry: Built-in protection systems shield against thermal overload, short circuits, high/low voltage fluctuations, and direct current (DC) offset.

• Gold-Plated Connections: Premium RCA input jacks and heavy-duty terminal blocks ensure low electrical resistance and corrosion-free signal transfer.

Technical Specifications

• Brand & Series: Nakamichi

• Model: FHA400

• Amplifier Class: Class AB

• Number of Channels: 4 Channels

• Total Peak Power Output: 400 W

• RMS Power Output (@ 4 Ohms): 50 W x 4

• RMS Power Output (@ 2 Ohms): 75 W x 4

• Bridged RMS Power (@ 4 Ohms): 150 W x 2

• Frequency Response: 20 Hz – 20,000 Hz

• Signal-to-Noise Ratio (S/N): ≥ 90 dB

• Total Harmonic Distortion (THD): < 0.1%

• Low-Pass Filter (LPF): 50 Hz – 250 Hz (Variable)

• High-Pass Filter (HPF): 50 Hz – 250 Hz (Variable)

• Operating Voltage: 9V – 16V DC

Frequently Asked Questions (FAQs)

1. What speakers can I run on the Nakamichi FHA400 4-Channel Amplifier?

The FHA400 is ideal for powering 2 pairs of coaxial or component door speakers (front and rear cabin). Alternatively, you can run a pair of component speakers on Channels 1 & 2 and bridge Channels 3 & 4 to drive a single 4-ohm subwoofer.

2. Can I connect this amplifier to a factory car stereo or Android head unit?

Yes. You can feed audio signal into the FHA400 using low-level RCA cables from aftermarket or Android head units. For factory radios without RCA outputs, a high-to-low line output converter (LOC) can be used.

3. Does this amplifier overheat during long drives?

No. The FHA400 is constructed with a heavy-duty extruded aluminum alloy heat-sink chassis engineered for passive thermal cooling and protection against thermal shutdown.

4. What components are included inside the package?

The box includes 1 x Nakamichi FHA400 4-Channel Amplifier unit, mounting screws, spare fuse, and user setup manual.