Description
The STK4225MK2 is a high-performance, original Sanyo thick-film hybrid integrated circuit. Designed for high-end audio applications, this 2-channel (stereo) power amplifier module is capable of delivering a robust 100W per channel, making it an essential component for high-fidelity stereo systems and professional audio amplifiers.
Key Features:
- High Power Output: Provides a massive 100W + 100W of stereo power, easily driving large floor-standing speakers with clarity and authority.
- Built-in Protection: Features an integrated latch-type protection circuit to safeguard the module and your speakers against over-current and thermal stress.
- MK2 Performance: Part of the upgraded "Mark II" series, optimized for a Total Harmonic Distortion (THD) of just 0.4%, ensuring clean, professional-grade sound reproduction.
- Advanced Thermal Design: Utilizes Sanyo’s Insulated Metal Substrate Technology (IMST®) for superior heat dissipation and long-term thermal stability.
Specifications & Compatibility:
- Manufacturer: Sanyo
- Channels: 2-Channel (Stereo)
- Output Power: 100 Watts per channel
- Package Type: 22-Pin SIP (Large Hybrid Case)
- Common Applications: High-power vintage receivers, theater amplifiers, and professional-grade home audio units.
Technician’s Note: The STK4225MK2 handles significant power and generates concentrated heat. It is mandatory to use a large heatsink with a fresh, even layer of high-quality thermal compound. Always verify the DC power supply rails and check for shorted output components before installation to prevent damage to the new module.

