Upgraded Version 300W Mono Power Amplifier 1943+5200 High Power Tube Amp Board +Speaker Protection Relay Hifi Audio Amplifier

Features:1. High power output, up to 300W, effortlessly drives large speakers.2. Utilises high-voltage-rated audio push-pull transistors for clear sound quality and exceptional stability.3. Wide power supply range supporting ±20V-90V, accommodating diverse power environments.4. Robust drive capability effortlessly powers 15-inch speakers with outstanding performance.5. Compact dimensions facilitate installation, suitable for diverse audio systems.Description:This upgraded monoblock amplifier board features the 1943+5200 high-power push-pull output stage. Designed as a single-channel rear amplifier board, dual-channel operation requires two boards. Circuit design employs A970/C2240 high-voltage audio push-pull transistors in a dual differential configuration, with A1145/C2705 for voltage amplification. Medium-power A1837/C4793 transistors drive the output stage, utilising A1943/C5200 high-power push-pull transistors. The power supply range is exceptionally wide, accommodating DC voltages from ±20V to ±90V. Provided sufficient power is supplied, it effortlessly achieves an output power of 300W, delivering formidable drive capability that handles 15-inch speakers with ease.Specifications:Supply Voltage: DC ±20-90V (Recommended: ±20V-75V. Do not exceed voltage limits. Switching power supplies are unsuitable.)Output Power: 300W (8Ω enclosure)PCB Dimensions: 150mm × 75mmProduct Listing:Amplifier Board*1