Description
The STK428-610 is an advanced 2-channel Class D audio power amplifier hybrid IC manufactured by Sanyo. Designed for modern high-efficiency audio systems, this 28-pin module delivers a powerful 70 watts per channel (at 8 ohms) while maintaining the compact form factor and reliability Sanyo is known for.
Key Features:
- Class D Efficiency: Offers superior power efficiency (approx. 87%) compared to traditional Class AB amplifiers, resulting in cooler operation and longer component life.
- High-Fidelity Output: Delivers 70W + 70W of clean power with incredibly low total harmonic distortion (THD) for crystal-clear audio reproduction.
- IMST® Technology: Built on Sanyo’s Insulated Metal Substrate Technology for optimal thermal management and protection against overheating.
- Direct OEM Replacement: The primary power IC for JVC and Hitachi audio systems, including the popular JVC HX-D7 bookshelf series.
Specifications & Compatibility:
- Channels: 2-Channel (Stereo)
- Output Power: 70W + 70W (8?) / 100W + 100W (4?)
- Package Type: 28-Pin ZIP/HYB-28
- Compatibility: Direct replacement for JVC Part Number STK428-610E.
Pro Installation Tip: Even though Class D runs cooler, a high-quality thermal compound must be applied to the backplate. Ensure the output filter components on your board are checked, as Class D modules are sensitive to filter irregularities.

