1 x DIY 200W HIFI Audio Power Amplifier Board with 4 D998 Tubes — USB & MP3 Card Reader (Photo Color)

DIY HIFI audio power amplifier board featuring 4 D998 high amplifier tubes for strong output and refined sound. The annular 200W high-power stage delivers full, pleasing audio performance. Playback options include a USB input and an integrated MP3 card reader for easy music access. Audio stability and punch are improved by 2 large electrolytic capacitors that provide superior filtering and deeper bass. Thermal design uses a large area aluminum plate plus a fan cooling system for rapid heat dissipation and reliable long-term operation.