450+450Watt Amplifier 2SC3858/2SA1494

A professional-grade 450 W per channel stereo amplifier built around the 2SC3858/2SA1494 high-voltage transistor pair — delivering exceptional power and low distortion for the most demanding hi-fi and PA amplifier builds. When 350 W isn't enough, this is the board that delivers.

Supplied with transformer and preamplifier

🔹 Key Applications

• High-end DIY hi-fi power amplifier builds

• Large-venue PA system power amplification

• High-power subwoofer and woofer drive stages

• Professional audio equipment construction

• Stage amplifier chassis builds

🔹 Why Choose This Module?

• 450 W per channel — audiophile power levels

• 2SC3858/2SA1494 high-voltage transistor pair — premium complementary output

• Very low THD — audiophile-grade sound quality

• Dual stereo channels — complete left and right amplification

• Robust PCB layout — designed for sustained full-power operation

🔹 Technical Specifications

• Output Power: 450 W × 2 (stereo)

• Transistors: 2SC3858 + 2SA1494

• Supply Voltage: ±50 V – ±60 V DC (dual rail)

• Load Impedance: 4 Ω – 8 Ω

• THD: <0.08%

🔹 What's Included

1 × 450W+450W Stereo Amplifier Board

🔹 Pro Tip

💡 At 450 W per channel, thermal management is critical — use a heatsink with at least 0.5°C/W thermal resistance per output transistor pair. A dedicated ±55 V / 15 A toroidal power supply is recommended. Always include speaker protection relays (e.g. UPC1237) to safeguard your speakers on power-on/off.

⚠️ Note: Always ensure proper heat dissipation and correct voltage configuration before powering connected devices.