Description
Flagship 100W+100W High-Fidelity Stereo Amplifier Module
The STK4231V is the high-power flagship of Sanyo’s prestigious "V" series thick-film hybrid ICs. Delivering a continuous 100 Watts per channel, this module is engineered for elite home audio systems that demand both high volume and clinical signal purity. The "V" series architecture utilizes an internal current mirror to achieve a remarkably low Total Harmonic Distortion (THD) of just 0.08%.
This 22-pin module is a common replacement for flagship vintage receivers from the 1990s and high-performance integrated amplifiers. Its dual-channel design provides exceptional channel separation and a noise floor that is virtually silent, making it a favorite for audiophile-grade restorations.
Key Technical Features:
- Continuous Power Output: 100W + 100W (at 8Ω, 20Hz to 20kHz, THD = 0.08%).
- Distortion Performance: Ultra-low 0.08% THD for transparent, professional-grade audio.
- Built-in Muting: Integrated muting circuit to eliminate all types of power-on/off shock noise ("pop").
- Frequency Response: Optimized for high-bandwidth audio from 20Hz to 50kHz.
- Operating Voltage: Recommended supply of ±51V (Absolute Maximum ±75V).
- Pin Compatibility: Pin-compatible with the STK4201II series (0.4% THD) and the STK4141X series.
Installation & Thermal Management:
As a 200W total output module, the STK4231V generates massive thermal energy. It must be securely mounted to a very large, high-mass heatsink using premium thermal silicone grease. Operating this module without a heatsink—even for a one-second functional test—will cause immediate and permanent internal substrate failure.
Technician's Note: Before installation, verify that your power supply rails are healthy and ideally near ±51V. Due to the high voltages involved, ensure all filter capacitors are fully discharged before soldering. We highly recommend verifying the health of the output protection relay and emitter resistors to prevent damaging the new IC.