metal material ensures durability and long service life in demanding environments Easy installation with a simple frame, saving time and simplifying mounting power output from a DC 1224V power source, suitable for demanding audio applications Functional board designed with pre for amplifier and low frequency technology for integrated audio processing Use scenarios Automotive audio upgrade: powered by a DC 1224V supply to deliver stronger output and better bass response in a vehicle Home DIY audio project: integrate into a custom speaker or preamp setup to enhance low frequency performance Fixed or portable installations: durable frame and straightforward mounting suitable for cabinets or field setups requiring reliable amplification Key benefits Builds on metal construction for reliable, durable performance Quick and straightforward installation reduces setup time Flexible DC power range supports higher output without complex power supplies Designed for preamp use and low frequency technology to improve overall audio quality