2PCS KSA80 Field Effect Tube Class A Power Amplifier Board J162 K1058

Features 1 Use original J162 K1058 field effect tube bile taste tube MJE15032 MJE15033 MJE340 MJE350 2 The capacitor between coupling stages adopts 2 2UF WIMA capacitor imported from Germany with natural sound and wide sound field3 The resistance uses five ring metal resistors and the main circuit uses five ring metal film resistors with an accuracy of ±1 to ensure a good signal to noise ratio of the whole machine 4 The PCB adopts 1 6mm thick double sided board 2 0 oz copper thickness and full tinning process to ensure good passing performance of large and small currents First class PCB quality 5 This board uses the current advanced C1237 speaker protection circuit which effectively eliminates the impact sound of turning on and off and the DC output protection function making your speakers safer 6 The wiring layout of the whole circuit board is quite rigorous and reasonable and the whole PCB wiring adopts one point grounding method The power amplifier board works stably and reliably with large output power the sound is beautiful and round and the sound field is open It has a strong stereo effect stable and powerful low frequency excellent signal to noise ratio wide dynamic range clear details excellent transient response and can play all kinds of music with ease and has a very good performance in the home environment Basic parameter 1 Power supply parameters one set DC 40V AC transformer 300W double 28V need to add rectifier board The o