JVC Compact 4 Channel Amplifier 400W Designed for Tough Environments The JVC KS DR1004D amplifier is built to operate reliably in demanding settings, such as marine and motor sports applications. Its compact size—measuring just 145mm x 45mm x 99mm—makes it easy to install in tight spaces within vehicles exposed to outdoor elements. This amplifier’s design ensures consistent performance even under conditions involving moisture, temperature changes, and vibrations. Protective Conformal Coating A key feature of this amplifier is the conformal coating applied to the main printed circuit boards. This chemical barrier helps protect sensitive electronics from moisture, condensation, and chemical contaminants like salt spray. This added protection helps prevent corrosion and electrical faults, making the amplifier well suited to harsh environments where exposure to such conditions is common. Advanced Circuit Design for Clear Sound The JVC amplifier utilises separate circuit boards for the Pre-amp and Power-amp sections. This separation reduces radiation noise, contributing to cleaner audio output. Additionally, the unit features a large low-pass filter (LPF) coil that supports stable, high-quality sound without distortion, even when the volume is turned up. Customisable Sound Filtering This amplifier includes variable high-pass (HPF) and low-pass filters (LPF) with rotary controls. Unlike fixed switching filters, these allow fine tuning of frequency cut-offs, enabling users to tailor the sound to their exact preferences. This flexibility is valuable for optimising speaker performance across different vehicles and audio setups. With a maximum power output of 400 watts, the JVC Compact 4 Channel Amplifier delivers reliable, distortion-free sound suitable for enthusiasts looking to upgrade their car or marine audio system without compromising durability.