YJCO High Power HIFI Dual Channel Stage Amplifier Board 1000W*2 5200/1943 Transistors Professional Audio Power Amplifier Board

Package:stage power amplifier board*1Instructions:This AB1000C dual-channel professional stage power amplifier board uses a proven, stable circuit configuration with 24 power transistors to deliver 1000W+1000W output power. Designed with dual-differential input and optimized front-end signal processing, it adopts a composite driver setup featuring one pair of 1930/5171 alongside 5200/1943 devices, paired with a 22-transistor output stage to reach its rated high power.It outputs robust low frequencies and intricate sound details thanks to its DC feedback topology, which improves definition, delivers deep, springy bass and maintains steady, controllable performance even under heavy load.Built-in full-range safeguards include power-on/off delay protection to eradicate switching pop noise, midpoint voltage protection, overcurrent protection and overtemperature protection, alongside a dedicated header for a cooling fan. The amplifier is assembled with rigorously matched TTA1943/TTC5200 audio power transistors.Notes:1.Power the amplifier via a high-voltage toroidal transformer rated for dual AC 50V–70V together with an external rectifier-filter module; never connect the board directly to a raw transformer. Dual 50V or higher transformer input is recommended, as inadequate supply voltage leads to irregular operation and noticeable audio distortion.2.The onboard AC12V port exclusively supplies the protection circuit and must link to an independent 12V winding from the transformer; do not tie this terminal to any other power lines.3.Avoid excessive quiescent current adjustment for the AB1000C, since elevated idle current raises operating temperature and can burn out power transistors.4.Proper assembly and calibration demand solid electronics expertise. Novice users should fully familiarize themselves with the circuit before installation.Specificatons:•Model: AB1000C•Output Channels: 2.0 Channels•Power Transistors: 12 × TTA1943, 12 × TTC5200•Voltage Gain: 25 times•Frequency Response: 20Hz–20kHz•Main Supply: DC ±60V ~ ±110V (external rectifier board needed)•Output Power: 1000W+1000W into 4Ω, 600W+600W into 8Ω•Total Harmonic Distortion (THD): 0.01%•Protection Features: Overtemp, Overcurrent, Midpoint Voltage & Power-on Delay Protection•Dimensions: 84×320×87mm•Net Weight: 1.8kg